Custom Server Controls :: Property Collections Not Persisted When Control Inside Update Panel And Content Placeholder

Apr 13, 2010

I'm creating an ASP.NET Control which has a property collection for Columns which the user can edit in the Property Collection Editor..

In most circumstances this works fine, the collection can be edited in the designer and the appropriate tags are added inside the control in the ASPX file.

It works fine when

My control is added to the form

[Code]....

My control is added inside an Update Panel

[Code]....

[Code]....

However, if My control is inside a Content Placeholder which is inside an Update Panel, it fails to work as it should. In this scenario, when the Columns collection is edited in the designer, if you then switch back to Source view, the Columns collection is emptied. I have to save the aspx page before switching back to Source view for the changes to be kept.

[Code]....

how to get around this problem? Is there something I may have missed?

Here's the code for the Control

[Code]....

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