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Replace standart DispForm with my application page for External Lists

Posted By: Posted Date: September 23, 2010 Points: 0 Category :SharePoint

Hi all,

I'd like to use my application pages (with code behind, not modified with Sharepoint Designer pages) for View/Edit/New operations.

As I know there is an issue how to do it:

SPContentType ct=web.Lists["ListName"].ContentTypes["ContentTypeName"];

ct.EditFormUrl="_layouts/youreditpage.aspx";

ct.Update();

And this works fine for common Lists, but when I'm trying to do it with External List,

I have an Exception on Update method:

SPException: The collection cannot be modified.

I've tryied:

web.AllowUnsafeUpdates = true;

//or

ct.ReadOnly = false;

// or
ct.Sealed = false;

and nothing of it helped me...

Is anybody knows how can I make it? May be another method to do it?

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