Depending on your setup, there may be several reasons for an issue with the styles of the controls in a RadWIndow:
- if you are using RadFormDecorator to style textboxes and dropdowns in the ContentTemplate of the RadWIndow, examine this article: http://www.telerik.com/help/aspnet-ajax/formdecorator-decorating-radwindow.html.
- If you are using an external page - try adding a RadStyleSheetManager and RadScriptManager, as this is what makes a difference in the type of the requested webresource.
- If the form controls are part of our suite, make sure the Skin property is set as expected (from the web.config, per control, or through a RadSkinManager on the content page).
- if you override the skins of the controls on the main page, you should add that stylesheet to the content page as well.
If this does not help, please explain the situation in more detail and add some comparisons between the expected vs actual behavior as I do not see dropdown lists. Sharing the code that leads to the problem will also help.
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