Custom Header

[Keith]

I would like to remove the "Select All" checkbox from the header, and add an expand all button to the header above the "+" icons.  What is the best way to do this?  There doesn't seem to be a "header template" for this control.

[Keith]

Can i get an answer or response.

[Tsvetina]

Hello Keith,

You can hide the SelecAll check box in the select column by using the following code:

protected void RadTreeList1_ItemCreated(object sender, TreeListItemCreatedEventArgs e)
{
    if (e.Item is TreeListHeaderItem)
    {
        (e.Item as TreeListHeaderItem)["SelectColumn"].Controls[0].Visible = false;
    }
}

As for expand/collapse, the buttons are not placed in a separate column, they are just part of the first cell in every row. Therefore, they do not have a separate cell in the header. Therefore, you can consider adding a button outside of the treelist for example and use it to expand all items.

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="ExpandAll" />

protected void Button1_Click(object sender, EventArgs e)
 {
     RadTreeList1.ExpandAllItems();
 }

Best wishes,
Tsvetina
the Telerik team