error CS1056: Unexpected character '$'

[Alan]

Good day,
I'm using the standard code example for the ListBox and I'd like to have sorting.  My Master page generates a unique name and adds it to all of the form element names, so  the code looks like this:

<telerik:RadCodeBlock runat="server" ID="RadCodeBlock1">         
<script type="text/javascript">             
//<![CDATA[             
var listBox;             
function pageLoad() {                 
listBox = $find("<%= ctl00$MainContent$SortUC$RadListBox1.ClientID %>");           
}

etc...etc

However when I run the code, I'm getting this error:
error CS1056: Unexpected character '$'

and its pointing to the line with the form name. I can find scant little info on the internet about this, so can somone
please tell me how this is supposed to work if it can't handle any non-alphanumerical chars in the string?

Thanks,
Alan R

[Ivan Zhekov]

Hello, Alan.

You need to provide the server ID of the control, not the generated one. In this case it seems that the ID is RadListBox1 so the end this snippet should be:

function pageLoad() {
    listBox = $find("<%= RadListBox1.ClientID %>");
}

Regards,
Ivan Zhekov
the Telerik team