[Solved] Only one instance of Window per page

[Philip Fourie]

I have an EditorTemplate that is repeated on a page. This EditorTemplate creates a Telerik Window (see code below).  How do I ensure that only one instance of the 'PostalLookupWindow` Window is created for a given page/request?

I have tried using ViewData and TempData to store temporary values indicating that the control has been created before but was unsuccessful.  I cannot put the Window creation in the controls's parent as the EditorTemplate is re-used in multiple pages.

 Html.Telerik().Window()
    .Name("PostalLookupWindow")
    .Title("Postal Code Selection")
    .Height(430)
    .Width(700)
    .Modal(true)
    .Draggable(true)
    .Scrollable(false)
    .LoadContentFrom(Url.Action("Index","PostalCode", new { area = "" }, Request.Url.Scheme))
    .Visible(false).Render();

I am using:

• Telerik MVC extensions 2010.3.1318
• ASP.NET MVC 3.0
  I am using 2010.3.1318
  I am using 2010.3.1318

Thank you,
Philip Fourie

[Philip Fourie]

I cross-posted on StackOverflow and found a solution that will work. 

[nachid]

I am creating it on my master page and using this unique Window instance everywhere in my application.