I recently upgraded some controls on an aspx page from <asp:DropDownList> to <telerik:RadDropDownList>. I am running a .NET 4.5 website and am referencing the 2013.3.1114.45 version of the Telerik dlls.
When I test out the new DropDownLists using Internet Explorer 11 the dropdownlists expand as expected when I navigate to the page from a browser that is not on the computer hosting the website. However, when I use an older version of Internet Explorer (I have used IE10, and IE8) OR when I use Internet Explorer 11 on the computer that is hosting th website, the dropdownlists don't expand. When clicked, they produce a grey line under the dropdown list, but don't actually expand.
I am binding the dropdown lists in the codebehind as follows:
ddlDF.DataSource = AppShared.GetDF()
'The Signature of the GetDF function is
This seems like it must be a pretty basic problem as I'm sure others have used the DropDownList successfully with the 2013.3.1114.45 version of the Telerik dlls in older browsers and browsers on the host machine.
I am attaching screenshots of the dropdownlists when they produce the grey line under them instead of expanding.
Please let me know if you can reproduce this problem or have seen it before