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Old June 6th, 2008, 01:42 AM
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Default user controls not sustaining on a wizard step!!

Hiya guys, I have a complex challenge here for anyone willing to crack it haha...

I have a user control, which is introduced at the selection of a value from a dropdownlist. Both the dropdownlist and the user control exist on the same wizard step. Essentially in the codebehind files, the user control is bought into the picture on 'dropdownlist_selectedindexchanged' event.

Everything works fine till this point. The issue arises when I traverse back, i.e I go to a previous step of the wizard and come back to the same step of the wizard where the user controls were introduced. At this point, the user controls have dissapeared. I have no idea why this is happening, so anyone willing to solve this issue.

Further details: Obviously the user controls are introduced into placeholder server controls. THe dropdownlist and user control exist on the same wizard step. THe dropdownlist has menu items, 1,2,3,4. Upon selection of any of these values, a corresponding number of user controls are introduced. Just mentioned these so that people get a clearer picture

Old June 6th, 2008, 12:41 PM
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Can you further define this:
quote:Essentially in the codebehind files, the user control is bought into the picture on 'dropdownlist_selectedindexchanged' event.
If by bought into the picture you mean programmatically, it makes sense. Not the entire control is added to ViewState, so it gets lost. You need to re-add it to the page in an early event like Page_Init.

For more info, here's a quick example: http://support.microsoft.com/kb/317515

Maybe it's an option to add the control, but simply hide it and show it when relevant?


Imar Spaanjaars
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Author of Beginning ASP.NET 3.5 : in C# and VB, ASP.NET 2.0 Instant Results and Dreamweaver MX 2004
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