These three properties have effect only for pages inside the RadWindow. Please examine the information in the demo I linked for the difference between the two modes. When the contentTemplate is used the controls inside load on the page immediately, so these properties cannot have effect. On the matter of accessing controls inside - this is also shown in the demo and in this article
. Generally the concept is the same as with any other INaming container
. You may find useful jQuery to access them, e.g. as children of the RadWindowInstance.get_popupElement() by adding classes to them.
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