1209 lines
47 KiB
C#
1209 lines
47 KiB
C#
using MySql.Data.MySqlClient;
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data;
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using System.Data.SqlClient;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Face.Services.DBUtility.Common
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{
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public abstract class DbHelperMySQL
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{
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//数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库.
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//public static string connectionString = "Data Source=47.119.147.104;Initial Catalog=Face;User ID=sa;Password=9S844fK3";
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public static string connectionString = "Server=blv-cloud-db.mysql.rds.aliyuncs.com;Database=face;Uid=blv_rcu;Pwd=fnadiaJDIJ7546;port=3307;";
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public DbHelperMySQL()
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{
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}
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#region 公用方法
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/// <summary>
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/// 判断是否存在某表的某个字段
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/// </summary>
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/// <param name="tableName">表名称</param>
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/// <param name="columnName">列名称</param>
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/// <returns>是否存在</returns>
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public static bool ColumnExists(string tableName, string columnName)
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{
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string sql = "select count(1) from syscolumns where [id]=object_id('" + tableName + "') and [name]='" + columnName + "'";
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object res = GetSingle(sql);
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if (res == null)
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{
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return false;
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}
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return Convert.ToInt32(res) > 0;
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}
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public static int GetMinID(string FieldName, string TableName)
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{
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string strsql = "select min(" + FieldName + ") from " + TableName;
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object obj = DbHelperMySQL.GetSingle(strsql);
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if (obj == null)
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{
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return 0;
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}
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else
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{
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return int.Parse(obj.ToString());
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}
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}
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public static int GetMaxID(string FieldName, string TableName)
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{
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string strsql = "select max(" + FieldName + ")+1 from " + TableName;
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object obj = DbHelperMySQL.GetSingle(strsql);
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if (obj == null)
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{
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return 1;
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}
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else
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{
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return int.Parse(obj.ToString());
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}
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}
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public static bool Exists(string strSql)
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{
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object obj = DbHelperMySQL.GetSingle(strSql);
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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/// <summary>
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/// 表是否存在
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/// </summary>
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/// <param name="TableName"></param>
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/// <returns></returns>
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public static bool TabExists(string TableName)
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{
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string strsql = "select count(*) from sysobjects where id = object_id(N'[" + TableName + "]') and OBJECTPROPERTY(id, N'IsUserTable') = 1";
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//string strsql = "SELECT count(*) FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[" + TableName + "]') AND type in (N'U')";
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object obj = DbHelperMySQL.GetSingle(strsql);
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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public static bool Exists(string strSql, params MySqlParameter[] cmdParms)
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{
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object obj = DbHelperMySQL.GetSingle(strSql, cmdParms);
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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#endregion
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#region 执行简单SQL语句
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/// <summary>
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/// 执行SQL语句，返回影响的记录数
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSql(string SQLString)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySqlException e)
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{
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connection.Close();
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throw e;
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}
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}
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}
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}
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/// <summary>
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/// 重载，执行SQL语句，返回影响的记录数
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/// </summary>
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/// <param name="connection">MySqlConnection对象</param>
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/// <param name="trans">MySqlTransaction事件</param>
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/// <param name="SQLString">SQL语句</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSql(MySqlConnection connection, MySqlTransaction trans, string SQLString)
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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cmd.Connection = connection;
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cmd.Transaction = trans;
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySqlException e)
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{
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//trans.Rollback();
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throw e;
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}
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}
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}
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public static int ExecuteSqlByTime(string SQLString, int Times)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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cmd.CommandTimeout = Times;
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySqlException e)
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{
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connection.Close();
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throw e;
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}
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}
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}
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}
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/// <summary>
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/// 执行Sql和Oracle滴混合事务
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/// </summary>
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/// <param name="list">SQL命令行列表</param>
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/// <param name="oracleCmdSqlList">Oracle命令行列表</param>
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/// <returns>执行结果 0-由于SQL造成事务失败 -1 由于Oracle造成事务失败 1-整体事务执行成功</returns>
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public static int ExecuteSqlTran(List<CommandInfo> list, List<CommandInfo> oracleCmdSqlList)
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{
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using (MySqlConnection conn = new MySqlConnection(connectionString))
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{
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conn.Open();
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MySqlCommand cmd = new MySqlCommand();
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cmd.Connection = conn;
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MySqlTransaction tx = conn.BeginTransaction();
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cmd.Transaction = tx;
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try
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{
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foreach (CommandInfo myDE in list)
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{
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string cmdText = myDE.CommandText;
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MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters;
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PrepareCommand(cmd, conn, tx, cmdText, cmdParms);
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if (myDE.EffentNextType == EffentNextType.SolicitationEvent)
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{
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if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
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{
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tx.Rollback();
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throw new Exception("违背要求" + myDE.CommandText + "必须符合select count(..的格式");
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//return 0;
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}
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object obj = cmd.ExecuteScalar();
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bool isHave = false;
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if (obj == null && obj == DBNull.Value)
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{
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isHave = false;
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}
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isHave = Convert.ToInt32(obj) > 0;
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if (isHave)
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{
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//引发事件
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myDE.OnSolicitationEvent();
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}
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}
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if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
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{
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if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
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{
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tx.Rollback();
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throw new Exception("SQL:违背要求" + myDE.CommandText + "必须符合select count(..的格式");
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//return 0;
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}
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object obj = cmd.ExecuteScalar();
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bool isHave = false;
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if (obj == null && obj == DBNull.Value)
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{
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isHave = false;
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}
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isHave = Convert.ToInt32(obj) > 0;
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if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
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{
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tx.Rollback();
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throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须大于0");
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//return 0;
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}
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if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
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{
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tx.Rollback();
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throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须等于0");
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//return 0;
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}
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continue;
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}
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int val = cmd.ExecuteNonQuery();
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if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
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{
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tx.Rollback();
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throw new Exception("SQL:违背要求" + myDE.CommandText + "必须有影响行");
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//return 0;
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}
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cmd.Parameters.Clear();
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}
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//string oraConnectionString = PubConstant.GetConnectionString("ConnectionStringPPC");
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//bool res = OracleHelper.ExecuteSqlTran(oraConnectionString, oracleCmdSqlList);
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//if (!res)
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//{
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// tx.Rollback();
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// throw new Exception("Oracle执行失败");
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// return -1;
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//}
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tx.Commit();
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return 1;
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}
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catch (MySqlException e)
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{
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tx.Rollback();
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throw e;
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}
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catch (Exception e)
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{
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tx.Rollback();
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throw e;
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}
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}
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}
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/// <summary>
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/// 执行多条SQL语句，实现数据库事务。
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/// </summary>
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/// <param name="SQLStringList">多条SQL语句</param>
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public static int ExecuteSqlTran(List<String> SQLStringList)
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{
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using (MySqlConnection conn = new MySqlConnection(connectionString))
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{
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conn.Open();
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MySqlCommand cmd = new MySqlCommand();
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cmd.Connection = conn;
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MySqlTransaction tx = conn.BeginTransaction();
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cmd.Transaction = tx;
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try
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{
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int count = 0;
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for (int n = 0; n < SQLStringList.Count; n++)
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{
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string strsql = SQLStringList[n];
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if (strsql.Trim().Length > 1)
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{
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cmd.CommandText = strsql;
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count += cmd.ExecuteNonQuery();
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}
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}
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tx.Commit();
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return count;
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}
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catch
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{
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tx.Rollback();
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return 0;
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}
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}
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}
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/// <summary>
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/// 执行带一个存储过程参数的的SQL语句。
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSql(string SQLString, string content)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(SQLString, connection);
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MySqlParameter myParameter = new MySqlParameter("@content", SqlDbType.Text);
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myParameter.Value = content;
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySqlException e)
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{
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throw e;
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 执行带一个存储过程参数的的SQL语句。
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||
/// </summary>
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/// <param name="SQLString">SQL语句</param>
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/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
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/// <returns>影响的记录数</returns>
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public static object ExecuteSqlGet(string SQLString, string content)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(SQLString, connection);
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MySqlParameter myParameter = new MySqlParameter("@content", SqlDbType.Text);
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myParameter.Value = content;
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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object obj = cmd.ExecuteScalar();
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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return null;
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}
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else
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{
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return obj;
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}
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}
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catch (MySqlException e)
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{
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throw e;
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
|
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/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
|
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/// </summary>
|
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/// <param name="strSQL">SQL语句</param>
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/// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(strSQL, connection);
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System.Data.SqlClient.SqlParameter myParameter = new System.Data.SqlClient.SqlParameter("@fs", SqlDbType.Bit);
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myParameter.Value = fs;
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cmd.Parameters.Add(myParameter);
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try
|
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{
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connection.Open();
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int rows = cmd.ExecuteNonQuery();
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return rows;
|
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}
|
||
catch (MySqlException e)
|
||
{
|
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throw e;
|
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}
|
||
finally
|
||
{
|
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cmd.Dispose();
|
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connection.Close();
|
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}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
||
/// </summary>
|
||
/// <param name="SQLString">计算查询结果语句</param>
|
||
/// <returns>查询结果（object）</returns>
|
||
public static object GetSingle(string SQLString)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
|
||
{
|
||
try
|
||
{
|
||
connection.Open();
|
||
object obj = cmd.ExecuteScalar();
|
||
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
||
{
|
||
return null;
|
||
}
|
||
else
|
||
{
|
||
return obj;
|
||
}
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
connection.Close();
|
||
throw e;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
public static object GetSingle(string SQLString, int Times)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
|
||
{
|
||
try
|
||
{
|
||
connection.Open();
|
||
cmd.CommandTimeout = Times;
|
||
object obj = cmd.ExecuteScalar();
|
||
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
||
{
|
||
return null;
|
||
}
|
||
else
|
||
{
|
||
return obj;
|
||
}
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
connection.Close();
|
||
throw e;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 执行查询语句，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )
|
||
/// </summary>
|
||
/// <param name="strSQL">查询语句</param>
|
||
/// <returns>MySqlDataReader</returns>
|
||
public static void ExecuteReader(string strSQL,Action<MySqlDataReader> func)
|
||
{
|
||
try
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand(strSQL, connection))
|
||
{
|
||
connection.Open();
|
||
|
||
using (MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection))
|
||
{
|
||
func(myReader);
|
||
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
throw e;
|
||
}
|
||
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行查询语句，返回DataSet
|
||
/// </summary>
|
||
/// <param name="SQLString">查询语句</param>
|
||
/// <returns>DataSet</returns>
|
||
public static DataSet Query(string SQLString)
|
||
{
|
||
//connectionString = Services.Manager.Users.GerOnUserCofin();
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
//connection.Open();
|
||
//MySqlCommand sqlcom = new MySqlCommand(SQLString, connection);
|
||
//MySqlDataAdapter command = new MySqlDataAdapter();
|
||
//command.SelectCommand = sqlcom;
|
||
//command.Fill(ds);
|
||
|
||
connection.Open();
|
||
MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
|
||
command.Fill(ds, "ds");
|
||
}
|
||
catch (MySqlException ex)
|
||
{
|
||
throw new Exception(ex.Message);
|
||
}
|
||
return ds;
|
||
}
|
||
|
||
}
|
||
public static DataSet Query(string SQLString, int Times)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
connection.Open();
|
||
MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
|
||
command.SelectCommand.CommandTimeout = Times;
|
||
command.Fill(ds, "ds");
|
||
}
|
||
catch (MySqlException ex)
|
||
{
|
||
throw new Exception(ex.Message);
|
||
}
|
||
return ds;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载，执行查询语句，返回DataSet
|
||
/// </summary>
|
||
/// <param name="connection">MySqlConnection对象</param>
|
||
/// <param name="trans">MySqlTransaction事务</param>
|
||
/// <param name="SQLString">SQL语句</param>
|
||
/// <returns>DataSet</returns>
|
||
public static DataSet Query(MySqlConnection connection, MySqlTransaction trans, string SQLString)
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
|
||
command.SelectCommand.Transaction = trans;
|
||
command.Fill(ds, "ds");
|
||
}
|
||
catch (MySqlException ex)
|
||
{
|
||
throw new Exception(ex.Message);
|
||
}
|
||
return ds;
|
||
|
||
}
|
||
|
||
|
||
#endregion
|
||
|
||
#region 执行带参数的SQL语句
|
||
|
||
/// <summary>
|
||
/// 执行SQL语句，返回影响的记录数
|
||
/// </summary>
|
||
/// <param name="SQLString">SQL语句</param>
|
||
/// <returns>影响的记录数</returns>
|
||
public static int ExecuteSql(string SQLString, params MySqlParameter[] cmdParms)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand())
|
||
{
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
int rows = cmd.ExecuteNonQuery();
|
||
cmd.Parameters.Clear();
|
||
return rows;
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
throw e;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载，执行SQL语句，返回影响的记录数
|
||
/// </summary>
|
||
/// <param name="connection">MySqlConnection对象</param>
|
||
/// <param name="trans">MySqlTransaction对象</param>
|
||
/// <param name="SQLString">SQL语句</param>
|
||
/// <returns>影响的记录数</returns>
|
||
public static int ExecuteSql(MySqlConnection connection, MySqlTransaction trans, string SQLString, params MySqlParameter[] cmdParms)
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand())
|
||
{
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, trans, SQLString, cmdParms);
|
||
int rows = cmd.ExecuteNonQuery();
|
||
cmd.Parameters.Clear();
|
||
return rows;
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
//trans.Rollback();
|
||
throw e;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行多条SQL语句，实现数据库事务。
|
||
/// </summary>
|
||
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
|
||
public static void ExecuteSqlTran(Hashtable SQLStringList)
|
||
{
|
||
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
||
{
|
||
conn.Open();
|
||
using (MySqlTransaction trans = conn.BeginTransaction())
|
||
{
|
||
MySqlCommand cmd = new MySqlCommand();
|
||
try
|
||
{
|
||
//循环
|
||
foreach (DictionaryEntry myDE in SQLStringList)
|
||
{
|
||
string cmdText = myDE.Key.ToString();
|
||
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
|
||
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
||
int val = cmd.ExecuteNonQuery();
|
||
cmd.Parameters.Clear();
|
||
}
|
||
trans.Commit();
|
||
}
|
||
catch
|
||
{
|
||
trans.Rollback();
|
||
throw;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 执行多条SQL语句，实现数据库事务。
|
||
/// </summary>
|
||
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
|
||
public static int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList)
|
||
{
|
||
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
||
{
|
||
conn.Open();
|
||
using (MySqlTransaction trans = conn.BeginTransaction())
|
||
{
|
||
MySqlCommand cmd = new MySqlCommand();
|
||
try
|
||
{
|
||
int count = 0;
|
||
//循环
|
||
foreach (CommandInfo myDE in cmdList)
|
||
{
|
||
string cmdText = myDE.CommandText;
|
||
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters;
|
||
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
||
|
||
if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
|
||
{
|
||
if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
|
||
{
|
||
trans.Rollback();
|
||
return 0;
|
||
}
|
||
|
||
object obj = cmd.ExecuteScalar();
|
||
bool isHave = false;
|
||
if (obj == null && obj == DBNull.Value)
|
||
{
|
||
isHave = false;
|
||
}
|
||
isHave = Convert.ToInt32(obj) > 0;
|
||
|
||
if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
|
||
{
|
||
trans.Rollback();
|
||
return 0;
|
||
}
|
||
if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
|
||
{
|
||
trans.Rollback();
|
||
return 0;
|
||
}
|
||
continue;
|
||
}
|
||
int val = cmd.ExecuteNonQuery();
|
||
count += val;
|
||
if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
|
||
{
|
||
trans.Rollback();
|
||
return 0;
|
||
}
|
||
cmd.Parameters.Clear();
|
||
}
|
||
trans.Commit();
|
||
return count;
|
||
}
|
||
catch
|
||
{
|
||
trans.Rollback();
|
||
throw;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 执行多条SQL语句，实现数据库事务。
|
||
/// </summary>
|
||
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
|
||
public static void ExecuteSqlTranWithIndentity(System.Collections.Generic.List<CommandInfo> SQLStringList)
|
||
{
|
||
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
||
{
|
||
conn.Open();
|
||
using (MySqlTransaction trans = conn.BeginTransaction())
|
||
{
|
||
MySqlCommand cmd = new MySqlCommand();
|
||
try
|
||
{
|
||
int indentity = 0;
|
||
//循环
|
||
foreach (CommandInfo myDE in SQLStringList)
|
||
{
|
||
string cmdText = myDE.CommandText;
|
||
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters;
|
||
foreach (MySqlParameter q in cmdParms)
|
||
{
|
||
if (q.Direction == ParameterDirection.InputOutput)
|
||
{
|
||
q.Value = indentity;
|
||
}
|
||
}
|
||
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
||
int val = cmd.ExecuteNonQuery();
|
||
foreach (MySqlParameter q in cmdParms)
|
||
{
|
||
if (q.Direction == ParameterDirection.Output)
|
||
{
|
||
indentity = Convert.ToInt32(q.Value);
|
||
}
|
||
}
|
||
cmd.Parameters.Clear();
|
||
}
|
||
trans.Commit();
|
||
}
|
||
catch
|
||
{
|
||
trans.Rollback();
|
||
throw;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 执行多条SQL语句，实现数据库事务。
|
||
/// </summary>
|
||
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
|
||
public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
|
||
{
|
||
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
||
{
|
||
conn.Open();
|
||
using (MySqlTransaction trans = conn.BeginTransaction())
|
||
{
|
||
MySqlCommand cmd = new MySqlCommand();
|
||
try
|
||
{
|
||
int indentity = 0;
|
||
//循环
|
||
foreach (DictionaryEntry myDE in SQLStringList)
|
||
{
|
||
string cmdText = myDE.Key.ToString();
|
||
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
|
||
foreach (MySqlParameter q in cmdParms)
|
||
{
|
||
if (q.Direction == ParameterDirection.InputOutput)
|
||
{
|
||
q.Value = indentity;
|
||
}
|
||
}
|
||
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
||
int val = cmd.ExecuteNonQuery();
|
||
foreach (MySqlParameter q in cmdParms)
|
||
{
|
||
if (q.Direction == ParameterDirection.Output)
|
||
{
|
||
indentity = Convert.ToInt32(q.Value);
|
||
}
|
||
}
|
||
cmd.Parameters.Clear();
|
||
}
|
||
trans.Commit();
|
||
}
|
||
catch
|
||
{
|
||
trans.Rollback();
|
||
throw;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
||
/// </summary>
|
||
/// <param name="SQLString">计算查询结果语句</param>
|
||
/// <returns>查询结果（object）</returns>
|
||
public static object GetSingle(string SQLString, params MySqlParameter[] cmdParms)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand())
|
||
{
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
object obj = cmd.ExecuteScalar();
|
||
cmd.Parameters.Clear();
|
||
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
||
{
|
||
return null;
|
||
}
|
||
else
|
||
{
|
||
return obj;
|
||
}
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
throw e;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载，执行一条计算查询结果语句，返回查询结果（object）。
|
||
/// </summary>
|
||
/// <param name="connection">MySqlConnection对象</param>
|
||
/// <param name="trans">MySqlTransaction事务</param>
|
||
/// <param name="SQLString">计算查询结果语句</param>
|
||
/// <returns>查询结果（object）</returns>
|
||
public static object GetSingle(MySqlConnection connection, MySqlTransaction trans, string SQLString, params MySqlParameter[] cmdParms)
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand())
|
||
{
|
||
try
|
||
{
|
||
PrepareCommand(cmd, connection, trans, SQLString, cmdParms);
|
||
object obj = cmd.ExecuteScalar();
|
||
cmd.Parameters.Clear();
|
||
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
||
{
|
||
return null;
|
||
}
|
||
else
|
||
{
|
||
return obj;
|
||
}
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
trans.Rollback();
|
||
throw e;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行查询语句，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )
|
||
/// </summary>
|
||
/// <param name="strSQL">查询语句</param>
|
||
/// <returns>MySqlDataReader</returns>
|
||
public static void ExecuteReader(string SQLString,Action<MySqlDataReader> action, params MySqlParameter[] cmdParms)
|
||
{
|
||
try
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
using (MySqlCommand cmd = new MySqlCommand())
|
||
{
|
||
connection.Open();
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
using (MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection))
|
||
{
|
||
cmd.Parameters.Clear();
|
||
action(myReader);
|
||
}
|
||
}
|
||
};
|
||
}
|
||
catch (MySqlException e)
|
||
{
|
||
throw e;
|
||
}
|
||
// finally
|
||
// {
|
||
// cmd.Dispose();
|
||
// connection.Close();
|
||
// }
|
||
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行查询语句，返回DataSet
|
||
/// </summary>
|
||
/// <param name="SQLString">查询语句</param>
|
||
/// <returns>DataSet</returns>
|
||
public static DataSet Query(string SQLString, params MySqlParameter[] cmdParms)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
MySqlCommand cmd = new MySqlCommand();
|
||
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
||
using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
da.Fill(ds, "ds");
|
||
cmd.Parameters.Clear();
|
||
}
|
||
catch (MySqlException ex)
|
||
{
|
||
throw new Exception(ex.Message);
|
||
}
|
||
return ds;
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 重载，执行查询语句，返回DataSet
|
||
/// </summary>
|
||
/// <param name="connection">MySqlConnection对象</param>
|
||
/// <param name="trans">MySqlTransaction事务</param>
|
||
/// <param name="SQLString">查询语句</param>
|
||
/// <returns>DataSet</returns>
|
||
public static DataSet Query(MySqlConnection connection, MySqlTransaction trans, string SQLString, params MySqlParameter[] cmdParms)
|
||
{
|
||
MySqlCommand cmd = new MySqlCommand();
|
||
PrepareCommand(cmd, connection, trans, SQLString, cmdParms);
|
||
using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
|
||
{
|
||
DataSet ds = new DataSet();
|
||
try
|
||
{
|
||
da.Fill(ds, "ds");
|
||
cmd.Parameters.Clear();
|
||
}
|
||
catch (MySqlException ex)
|
||
{
|
||
trans.Rollback();
|
||
throw new Exception(ex.Message);
|
||
}
|
||
return ds;
|
||
}
|
||
}
|
||
|
||
|
||
private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, string cmdText, MySqlParameter[] cmdParms)
|
||
{
|
||
if (conn.State != ConnectionState.Open)
|
||
conn.Open();
|
||
cmd.Connection = conn;
|
||
cmd.CommandText = cmdText;
|
||
if (trans != null)
|
||
cmd.Transaction = trans;
|
||
cmd.CommandType = CommandType.Text;//cmdType;
|
||
if (cmdParms != null)
|
||
{
|
||
|
||
|
||
foreach (MySqlParameter parameter in cmdParms)
|
||
{
|
||
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
|
||
(parameter.Value == null))
|
||
{
|
||
parameter.Value = DBNull.Value;
|
||
}
|
||
cmd.Parameters.Add(parameter);
|
||
}
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region 存储过程操作
|
||
|
||
/// <summary>
|
||
/// 执行存储过程，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <returns>MySqlDataReader</returns>
|
||
public static MySqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
|
||
{
|
||
MySqlConnection connection = new MySqlConnection(connectionString);
|
||
MySqlDataReader returnReader;
|
||
connection.Open();
|
||
MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
|
||
command.CommandType = CommandType.StoredProcedure;
|
||
returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
|
||
return returnReader;
|
||
|
||
}
|
||
|
||
public static DataSet GetProcedure(string storedProcName, IDataParameter[] parameters)
|
||
{
|
||
MySqlConnection connection = new MySqlConnection(connectionString);
|
||
DataSet ds = new DataSet();
|
||
DataTable table = new DataTable();
|
||
connection.Open();
|
||
MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
|
||
command.CommandType = CommandType.StoredProcedure;
|
||
//方法一：利用MySqlDataReader DataTable
|
||
//MySqlDataReader returnReader;
|
||
//returnReader = command.ExecuteReader(CommandBehavior.CloseConnection);
|
||
//table.Load(returnReader);
|
||
|
||
//方法二：利用MySqlDataAdapter 返回DataSet
|
||
MySqlDataAdapter sqlDA = new MySqlDataAdapter(command);
|
||
//sqlDA.SelectCommand = command;
|
||
sqlDA.Fill(ds);
|
||
return ds;
|
||
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行存储过程
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <param name="tableName">DataSet结果中的表名</param>
|
||
/// <returns>DataSet</returns>
|
||
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
DataSet dataSet = new DataSet();
|
||
connection.Open();
|
||
MySqlDataAdapter sqlDA = new MySqlDataAdapter();
|
||
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
|
||
sqlDA.Fill(dataSet, tableName);
|
||
connection.Close();
|
||
return dataSet;
|
||
}
|
||
}
|
||
public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times)
|
||
{
|
||
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
{
|
||
DataSet dataSet = new DataSet();
|
||
connection.Open();
|
||
MySqlDataAdapter sqlDA = new MySqlDataAdapter();
|
||
sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
|
||
sqlDA.SelectCommand.CommandTimeout = Times;
|
||
sqlDA.Fill(dataSet, tableName);
|
||
connection.Close();
|
||
return dataSet;
|
||
}
|
||
}
|
||
|
||
|
||
/// <summary>
|
||
/// 构建 MySqlCommand 对象(用来返回一个结果集，而不是一个整数值)
|
||
/// </summary>
|
||
/// <param name="connection">数据库连接</param>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <returns>MySqlCommand</returns>
|
||
private static MySqlCommand BuildQueryCommand(MySqlConnection connection, string storedProcName, IDataParameter[] parameters)
|
||
{
|
||
MySqlCommand command = new MySqlCommand(storedProcName, connection);
|
||
command.CommandType = CommandType.StoredProcedure;
|
||
foreach (MySqlParameter parameter in parameters)
|
||
{
|
||
if (parameter != null)
|
||
{
|
||
// 检查未分配值的输出参数,将其分配以DBNull.Value.
|
||
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
|
||
(parameter.Value == null))
|
||
{
|
||
parameter.Value = DBNull.Value;
|
||
}
|
||
command.Parameters.Add(parameter);
|
||
}
|
||
}
|
||
|
||
return command;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 执行存储过程，返回影响的行数
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <param name="rowsAffected">影响的行数</param>
|
||
/// <returns></returns>
|
||
//public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
|
||
//{
|
||
// using (MySqlConnection connection = new MySqlConnection(connectionString))
|
||
// {
|
||
// int result;
|
||
// connection.Open();
|
||
// MySqlCommand command = BuildIntCommand(connection, storedProcName, parameters);
|
||
// rowsAffected = command.ExecuteNonQuery();
|
||
// result = (int)command.Parameters["ReturnValue"].Value;
|
||
// //Connection.Close();
|
||
// return result;
|
||
// }
|
||
//}
|
||
|
||
/// <summary>
|
||
/// 创建 MySqlCommand 对象实例(用来返回一个整数值)
|
||
/// </summary>
|
||
/// <param name="storedProcName">存储过程名</param>
|
||
/// <param name="parameters">存储过程参数</param>
|
||
/// <returns>MySqlCommand 对象实例</returns>
|
||
//private static MySqlCommand BuildIntCommand(MySqlConnection connection, string storedProcName, IDataParameter[] parameters)
|
||
//{
|
||
// MySqlCommand command = BuildQueryCommand(connection, storedProcName, parameters);
|
||
// command.Parameters.Add(new MySqlParameter("ReturnValue",
|
||
// SqlDbType.Int, 4, ParameterDirection.ReturnValue,
|
||
// false, 0, 0, string.Empty, DataRowVersion.Default, null));
|
||
|
||
// return command;
|
||
//}
|
||
#endregion
|
||
|
||
}
|
||
}
|