In the grid property window, specify doEdit for EditCommand.


private void InitializeComponent()
{
this.DataGrid1.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.doEdit);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion

private void doEdit(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
Response.Write("editing");
}