Error 1 'System.Web.UI.WebControls.GridView' does not contain a definition for 'GridView1_RowEditing' (pointing to ImageButton1_RowEditing() ) public int EditIndex = -1; protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; } protected void ImageButton1_RowEditing(object sender, ImageClickEventArgs e) { this.GridView1.GridView1_RowEditing(); }What would be a proper call of GridView1_RowEditing in ImageButton1_RowEditing ?