Combobox enable/disable through JavaScript

[Babul Sahu]

Hi,

I want to disable/enable RadComboBox on item selection changes of another RadCombobox.

I am trying to achieve this by using below code snippet, but getting error "Disable()" is not a valid method.

<rad:RadComboBox id="Combo1" runat="server" OnClientSelectedIndexChanging="LoadCombo2">
         <Items>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem1"></rad:RadComboBoxItem>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem2"></rad:RadComboBoxItem>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem3"></rad:RadComboBoxItem>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem4"></rad:RadComboBoxItem>
    </Items>
         </rad:RadComboBox>
<rad:RadComboBox id="Combo2" runat="server" OnClientItemsRequested="SetCombo2">
<Items>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem1"></rad:RadComboBoxItem>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem2"></rad:RadComboBoxItem>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem3"></rad:RadComboBoxItem>
       <rad:RadComboBoxItem runat="server" Text="RadComboBoxItem4"></rad:RadComboBoxItem>
    </Items>
</rad:RadComboBox>

<script type="text/javascript">
var ThisCombo2 = <%= Combo2.ClientID %>;

function LoadCombo2(item) {
 ThisCombo2.Disable();
 ThisCombo2.ClearSelection();
 ThisCombo2.RequestItems(item.Value, false); }

function SetCombo2(item) {
 item.SetText(item.Items[0].Text);
 item.Enable();
 if (item.Items.length > 1) { item.ShowDropDown(); } } </script>

With Regards,
Babul

[Shinu]

Hi Babul,

I tried the code with RadControls ASP.NET version and found the Disable() method works fine. I hope you are using different version of RadControls and thats why getting the error. Checkout the documentation which shows how to enable/ disable RadComboBox if you are using RadControls for ASP.NET AJAX.
Client-Side Basics

Could you provide the version of RadControls that you are using if this does not help?

-Shinu.

[Babul Sahu]

Hi Shinu,
   I am using telerik version - 2008.2.1001.35.

With Regards,
Babul