Hi everyone and firstly apologies if this post is in the wrong location but I am having issues with a couple of your controls. I have an asp page which used to use a dropdownlist to initially select a recipient which would then use its selectedValue as a select parameter for a datasource. On selectedindexchange I populate a radlistbox using the datasource. This all worked perfectly with no issues but I am now trying to introduce a radcombobox instead of the dropdownlist to allow me to search the items. The problem is on the selectedindexchange of the radcombobox I get a JScript runtime error 'Telerik.Web.UI.RadListBox' is null or not an object. I have updated the select parameters to use the new controls value and have tried a couple of things but cannot seem to resolve the issue.
Please any support will be greatly appreciated.