第一步：绑定行点击事件

protected void GV_DATA_RowDataBound( object sender, GridViewRowEventArgs e )    {        if( e.Row.RowType == DataControlRowType.DataRow )        {            e.Row.Attributes.Add( "onmouseover", "if(this!=prevselitem){this.style.backgroundColor='#Efefef'}" );            e.Row.Attributes.Add( "onmouseout", "if(this!=prevselitem){this.style.backgroundColor=''}" );            e.Row.Attributes.Add( "onclick", e.Row.ClientID.ToString() + ".checked=true;selectx(this)" );            e.Row.Attributes[ "style" ] = "Cursor:hand";        }     }

或者

protected void gridCiqGoodsDeclarCheck_RowDataBound(object sender, GridViewRowEventArgs e)        {            e.Row.Attributes["style"] = "cursor:hand";            PostBackOptions myPostBackOptions = new PostBackOptions(this);            myPostBackOptions.AutoPostBack = false;            myPostBackOptions.PerformValidation = false;            myPostBackOptions.RequiresJavaScriptProtocol = true; //加入javascript:头            String evt = Page.ClientScript.GetPostBackClientHyperlink(sender as GridView, "Select$" + e.Row.RowIndex.ToString());            e.Row.Attributes.Add("onclick", evt);        }

第二步 即可写行改变事件

protected void gridCiqGoodsDeclarCheck_SelectedIndexChanged(object sender, EventArgs e)        {            if (gridCiqGoodsDeclarCheck.SelectedRow == null)                return;            //获取运单号            string logisticsNo = gridCiqGoodsDeclarCheck.SelectedRow.Cells[0].Text;            if (string.IsNullOrEmpty(logisticsNo))                return;        }

第三步  <%@ Page Language="C#" 加一段话  

EnableEventValidation="false"

就OK了

还可以参考其他的：