Cannot create instance of 'Window' defined in assembly 'Presentation Framework' ,Version=3.0.0.0

[pjc 0]

I am getting below type of error when I try to run WinFX web browser application by putting 'window' component in .aspx page.How to solve this? System.Windows.Markup.XamlParseException: Error at element 'Grid' in markup file 'Page1.xaml' : Cannot create instance of 'Window' defined in assembly 'PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' due to security exception. ---> System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

[RichardGrimmer]

It's caused because an XBAP has no Window - it has a Page - subtle difference I know, but there you go - swap Window for Page in the main declaration (right at the top) and bottom closing tag. May be a few attributes of a window that are incompatible with a page, but trial and error will soon sort THAT one out :) "Now I guess I'll sit back and watch people misinterpret what I just said......" Christian Graus At The Soapbox

[pjc 0]

Thanks for giving me an answer,but I want to make such a control that can minimize,maximize,drag and drop.So If I use Page in place of Window ,I can't able to minimize,maximize or drag-drop it.So can you have any Idea for that?