Disable collapse button

[Lars Friede]

Hi,

is there a way to disable the collapse / expand button in the GridGroupHeaderItem in the RadGrid? Or hide it entirely?

/Lars

[Shinu]

Hi Lars,

Check out the following help article which explains how to hide the Group expand/collapse column.
Preventing groups expansion by hiding the expand/collapse images

Thanks
Shinu

[Martin]

Hello Lars,

You can hook up to the ItemCreated event like this:

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridGroupHeaderItem)
        {
            GridGroupHeaderItem item = (GridGroupHeaderItem)e.Item;
            DataRowView groupDataRow = (DataRowView)e.Item.DataItem;
            //item.Cells[0].Controls.Clear();
            (item.Cells[0].Controls[0] as Button).Enabled = false;
        }
    }

This code will set the expand / collapse button disabled but the button will still be shown in the grid. To completely remove it you can use the commented row instead. For further information about how to customize the GridGroupHeaderItem you can check this help topic.

I hope this helps.

Regards,
Martin
the Telerik team

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[Lars Friede]

Thank you for your replies Martin and Shinu,

It works now. :)

/L

[Patrice]

 

I am trying to hide this in the Item data bound event while I have the data to evaluate.
It is not finding the button control for the expand button.
Or will I need to find this control at a later time in the event time line?

 

 

Protected Sub OnItemDataBoundHandler(ByVal sender As Object, ByVal e As GridItemEventArgs)

 

 

    If (TypeOf (e.Item) Is GridDataItem) Then

 

        Dim

 

txtName As TextBox = DirectCast(item.FindControl("tbName"), TextBox)

 

 

        If txtName.Text = "AMT ST" Or txtName.Text = "AMT OT" Then

 

            Dim item As GridDataItem = DirectCast(e.Item, GridDataItem)

 

            item.Expanded =

False

 

 

            Dim btnExpanded As ImageButton = DirectCast(item.FindControl("btnExpand"), ImageButton)

 

            btnExpand.Visible =

False
        End If

 

 

    End If

 

 

End Sub

 

[Shinu]

Hi Mark,

Please take a look into the following code snippet i tried to hide the custom expand/collapse button and Default ExpandCollapse button.

VB:

Protected Sub RadGrid1_ItemDataBound(sender As Object, e As GridItemEventArgs)
    If TypeOf e.Item Is GridDataItem Then
        Dim ditem As GridDataItem = DirectCast(e.Item, GridDataItem)
                Dim txtName As TextBox = DirectCast(ditem.FindControl("tbName"), TextBox)
        If txtName.Text = "AMT ST" Or txtName.Text = "AMT OT" Then
            ditem.Expanded = False

            Dim btnExpanded As ImageButton = DirectCast(ditem.FindControl("btnExpand"), ImageButton)
            btnExpanded.Visible = False  'for the custom button you give for expand

            Dim Button1 As Button = DirectCast(ditem("ExpandColumn").Controls(0), Button)
            Button1.Visible = False      ' for the default ExpandCollapse Button

        End If
    End If
End Sub

Thanks,
Shinu.