修复测试页面点击表格导致程序崩溃的异常。

.gitignore

@@ -0,0 +1,41 @@
+#
+#ignore thumbnails created by windows
+Thumbs.db
+#Ignore files build by Visual Studio
+*.obj
+*.exe
+*.pdb
+*.user
+*.aps
+*.pch
+*.vspscc
+*_i.c
+*_p.c
+*.ncb
+*.suo
+*.tlb
+*.tlh
+*.bak
+*.cache
+*.ilk
+*.log
+[Bb]in/
+[Dd]ebug*/
+*.sbr
+obj/
+
+[Rr]elease*/
+_ReSharper*/
+[Tt]est[Rr]esult*
+packages
+
+ 
+log.txt
+/.vs
+.vs/
+
+node_modules/
+.idea/
+.DS_Store
+
+