The RadWindow control is basically an IFRAME and you cannot have DHTML
elements lay above that IFRAME. One suggestion is to try the
. There using the OnPopupOpening and
OnPopupClosing event handlers of the RadDatePicker control and call the
autoSize() method of the window object with a small timeout.
Or if you don't want a fixed width window, you can set the window
, which will
automatically resize the window according to its content
If you want to show the RadDateTimePicker above the RadWindow ,Then better approach is to use window with ContentTemplate as shown in the demo below:
Window / Use as controls container
This will allow the datepicker to show outside the RadWindow boundaries
since it will be on the same page.
Now your window will be like