很久没写gridview的事件代码了，刚写了个rowcommand的事件，出现下面的错误：
The GridView 'gv ' fired event RowEditing which wasn 't handled.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: The GridView 'gv ' fired event RowEditing which wasn 't handled.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
查找原因，发现要加入以下事件RowEditing ：
.aspx:
<asp:GridView ID= "GridView1 " runat= "server " OnRowEditing= "Editing ">
<Columns>
<asp:CommandField ShowEditButton= "true " />
</Columns>
</asp:GridView>
.cs:
protected void Editing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
}
其他事件，如:Delete,Cancel,Update也是相似的。
编程技巧也跟工具一样，久久不用，就会生锈。记之~~~