Try
http://www.devx.com/tips/Tip/43006 [ ASP.NET GridView图像命令按钮问题(多次回发) [ ^ ]
使用ASP.NET的GridView技巧和窍门-第三部分 [

Try
http://www.devx.com/tips/Tip/43006[^]
ASP.NET GridView Image Command Button Problem (Multiple PostBacks)[^]
GridView Tips and Tricks using ASP.NET – Part III[^]