Include Additional Action Button

There are scenarios in which you may want to include additional button right after your edit form Update/Cancel buttons. To do that, you can wire the ItemDataBound event of the grid and add a custom button to the GridEditCommandColumn for the respective table.In addition, you can attach a confirmation dialog to its onclick attribute to display notification for the user when he clicks that button.Here are two example which illustrate that (note that you should add code to delete the item manually or use automatic deletes feature).

InPlace edit mode:

ASP.NET

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server">
  <MasterTableView EditMode="InPlace">
    <Columns>
      <telerik:GridEditCommandColumn UniqueName="EditCommandColumn">
      </telerik:GridEditCommandColumn>
    </Columns>
  </MasterTableView>
</telerik:RadGrid>

VB

Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemCreated
    If (TypeOf e.Item Is Telerik.Web.UI.GridDataItem AndAlso e.Item.IsInEditMode) Then
        Dim dataItem As GridDataItem = CType(e.Item, GridDataItem)
        Dim linkButton As LinkButton = New LinkButton
        'adding delete button as third
        linkButton.Text = "Delete"
        linkButton.Attributes("onclick") =
        "javascript:return confirm('Do you want to delete this item?')"
        linkButton.CommandName = "Delete"

        dataItem("EditCommandColumn").Controls.Add(New LiteralControl(" "))
        dataItem("EditCommandColumn").Controls.Add(linkButton)
    End If
End Sub

C#

protected void RadGrid1_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
{
    if (((e.Item is Telerik.Web.UI.GridDataItem) && e.Item.IsInEditMode))
    {
        GridDataItem dataItem = ((GridDataItem)(e.Item));
        LinkButton linkButton = new LinkButton();
        // adding delete button as third
        linkButton.Text = "Delete";
        linkButton.Attributes["onclick"] = "javascript:return confirm(\'Do you want to delete this item?\')";
        linkButton.CommandName = "Delete";
        dataItem["EditCommandColumn"].Controls.Add(new LiteralControl(" "));
        dataItem["EditCommandColumn"].Controls.Add(linkButton);
    }
}

Auto-generated edit forms (MasterTableView EditMode="EditForms"):

VB

Protected Sub RadGrid1_ItemCreated(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs)
    If TypeOf e.Item Is Telerik.Web.UI.GridEditFormItem AndAlso e.Item.IsInEditMode Then
        Dim linkButton As New LinkButton()
        linkButton.Text = "Delete"
        linkButton.CommandName = "Delete"
        linkButton.Attributes("onclick") = "javascript:return confirm('Do you want to delete this item?')"
        Dim cancel As LinkButton = TryCast(e.Item.FindControl("CancelButton"), LinkButton)
        cancel.Parent.Controls.Add(New LiteralControl(" "))
        cancel.Parent.Controls.Add(linkButton)
    End If
End Sub

C#

protected void RadGrid1_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
{
    if (e.Item is Telerik.Web.UI.GridEditFormItem && e.Item.IsInEditMode)
    {
        LinkButton linkButton = new LinkButton();
        linkButton.Text = "Delete";
        linkButton.CommandName = "Delete";
        linkButton.Attributes["onclick"] = "javascript:return confirm('Do you want to delete this item?')";
        LinkButton cancel = e.Item.FindControl("CancelButton") as LinkButton;
        cancel.Parent.Controls.Add(new LiteralControl(" "));
        cancel.Parent.Controls.Add(linkButton);
    }
}