Error when casting PreviousPage

Question

I am trying to use PostBackUrl in my default.aspx page to postback to my memberlogin.aspx page. When I try to cast the PreviousPage object to a _Default page object, in the code behind for memberlogin.aspx I get this error:

CS0030: Cannot convert type '_Default' to 'ASP.default_aspx'

Why won't it let me cast it? Without casting it I can't access the default pages properties (I have tried using interfaces too, same problem).

Canavar · Accepted Answer · 2009-09-01 19:18:06Z

2

To access public members of your previous page, define your previous page with PreviousPageType directive :

<%@ PreviousPageType VirtualPath="~/Default.aspx"%>

answered Sep 1, 2009 at 19:18

Canavar

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2 Comments

David Over a year ago

I also tried another way, by removing the PreviousPageType directive and casting the PreviousPage as _Default page in the memberlogin.aspx code behind, however the PreviousPage is populated, but when casted, the casted page becomes null! What is going on?

David Over a year ago

I found this was because the cross postback pages I am using, both use a Master page, so it worked doing this and accessing it this way: TextBox t = Page.PreviousPage.Master.FindControl("Main").FindControl("textBox1") as TextBox;

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