Hello Brandon,

You can get the reference of the Window by its ID and call its .hide() method:

• https://docs.telerik.com/devtools/aspnet-ajax/controls/window/client-side-programming/radwindow-object;
• https://docs.telerik.com/devtools/aspnet-ajax/general-information/get-client-side-reference#using-the-ms-ajax-approach;

If you are using the WindowManager and the .radopen() method, you can save the reference of the window that is the return value of the .radopen() method and then use it to call the .hide() method.

• https://docs.telerik.com/devtools/aspnet-ajax/controls/window/getting-started/opening-windows;
• https://docs.telerik.com/devtools/aspnet-ajax/controls/window/getting-started/opening-windows#using-radopen-and-getradwindowmanageropen;

Regards,
Peter Milchev
Progress Telerik