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Asked: 2026-05-11T09:01:58+00:00

I have user control on a ASP.NET web page, which contains a GridView and

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I have user control on a ASP.NET web page, which contains a GridView and a radio button selector.

In the underlying middle tier I have a thread which goes to the database and then raises an event to say ‘I have some data’ my User control handles this event and sets a Session Variable.

This works and I can see the event being handled and the Session variable gets the new data.

However when i go to use this session variable when the selected index of the Radio button selector changes the Session variable reports as ‘Nothing’

I have ensured that the obvious (i.e. spelling, Sessions switched on etc) are correct.

The GridView and radio button selector are encapsulated in the same Update panel.

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  1. Check that if your UpdatePanel – updatemode is set to ‘Conditional’? also Child as triggers? I would first start by putting a stop in your page load, see whats happening from there. Do a search for all places where you populate that session variable and put a stop. You may be surprised, I have often found that page lifecycle gets confusing even though I thought I understood it. Alt – post some code and we can step through.

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