Disable or remove listbox button

[Mohan]

I have 2 listboxes and would like allow only one way transfers. By default both right and left button show up. Is it possible to disable/remove one of them .

Thanks

[Shinu]

Hi mohan,

One suggestion would be cancel transferring item using args.set_cancel(true) in OnClientTransferring event. See the example.

aspx:

<telerik:RadListBox runat="server" ID="RadListBoxSource" Height="200px" Width="230px"
    OnClientTransferring="OnClientTransferring" AllowTransfer="True" TransferToID="RadListBoxDestination">
    <Items>
        <telerik:RadListBoxItem Text="Argentina" runat="server" />
        <telerik:RadListBoxItem Text="Australia" runat="server" />
        <telerik:RadListBoxItem Text="Brazil" runat="server" />
    </Items>
</telerik:RadListBox>
<telerik:RadListBox runat="server" ID="RadListBoxDestination" Height="200px" Width="200px">
</telerik:RadListBox>

javascript:

<script type="text/javascript">
function OnClientTransferring(sender, args)
{
    if(args.get_sourceListBox() != sender)
    {
        args.set_cancel(true);
        alert('Cannot transfer the item.');
    }
}
</script>

-Shinu.

[Genady Sergeev]

Hi Mohan,

As Shinu properly mentioned, one of the possible solutions is to use the client side API. The other option is to hide one of the transfer buttons. Example code:

        function pageLoad() {
            var $ = $telerik.$;
            var listBox = $find("RadListBox1");

            $(".rlbTransferToDisabled", listBox.get_element()).css("display", "none");
        }

Kind regards,
Genady Sergeev
the Telerik team

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[Wendy Hunt]

Hi Genady -

Is there a way to do this without using javascript?  Instead write code on the .cs page?

wen

[Genady Sergeev]

Hello Wendy Hunt,

Unfortunately there is no way to this on the server. Currently RadListBox does not support API that allows you to configure which transfer buttons should appear. However, such API exists for the Reorder buttons. I will add this feature request to our PITS system and if you feel that such API will be helpfull, please vote for this feature. If there are more customers that demand it, we will implement it. The PITS work item is going to be visible forth from tomorrow

Sincerely yours,
Genady Sergeev
the Telerik team

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[Wendy Hunt]

My goal would be to have the ability to enable and disable the listbox buttons through my .cs code.

Thanks for the information Genady!

wen

[Genady Sergeev]

Hello Wendy Hunt,

The feature request is now available in our PITS system and you can vote for it here.

Regards,
Genady Sergeev
the Telerik team

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[Bradley Fitzpatrick]

I don't see this feature in PITS when searching for radlistbox. Has it been implemented?

Edit: Disregard, I just saw the "Hide the transfer to left button" section for RadListBox.