Indeed, Princy is right. I would just like to add some more info about the DestroyOnClose functionality. When this property is set to true, the window object will be destroyed once it is closed. This means that you will not be able to open that same RadWindow again until the page is reloaded. A new RadWindow with the default settings taken from the RadWindowManager will be opened instead. That is why in scenario like this, I suggest to set all needed properties (size, behavior, etc.) in the RadWindowManager OR as an alternative - to set them by using the client-side API when opening RadWindow.
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