I have extended Advanced Search with the following: Country, City, State.

When I click search, GetAllAdsByQuery is executed fine, however after that a second postback is generated and GetAllAdsByQuery is executed with empty parameters...

Any idea why this second postback to advanced search occurs? Why GetAllAdsByQuery is called twice?

It sounds like, when it is doing a postback on your Search Results page, it is clearing the advanced search. That's where I would start with it.

Go through your code behind on the Search page. Maybe you used the clear search onclick event.

I ahve added this code to the Load event of the LocationDropdown control:

Sorry no ideas, but I did notice you are getting an error every once in a while.

Line 1878:            this.Adapter.SelectCommand.Parameters[3].Value = ((int)(AdLevel));
Line 1879:            AdsDataComponent.AdsDataTable dataTable = new AdsDataComponent.AdsDataTable();
Line 1880:            this.Adapter.Fill(dataTable);
Line 1881:            return dataTable;
Line 1882:        }

The problem is that there is hidden Advanced Search Control on search.aspx. Here is what I think is happening:

1) In my code somwhere in Search.aspx.cs another postback is generated back to Search.aspx.

2)  Loading all controls happens again, including advanced_search hiden control

3) When advanced_search control loads, it resets itself, because of the initialization code I have placed there

4) Once it resets itself, city, state and country is empty again

What would be the best way to fight this scenario? I was thinking maybe if I can place the advanced_search control to viewstate, that would work? I could check if viewstate is null, if not just retrieve the control from viewstate... I am not sure how to do it and if this is a good idea at all...

 Please help

 Greetings,

 I know you've already fixed this and have probably been using it with good results for a while but I have another solution in case anyone else happens accross this.

I've had this very same issue happen multiple times on the search page as well as the ad posting page. What I did to clear up the problem was to copy all the custom code I had written into a seperate text document (just so I didn't have to rewrite the code). Then I get a copy of the original pages code behind and overwrite your modified page entirely. Then I add back in my custom code and it works as it should with a single pass through the code behind.

Why this is happening, I can't even begin to explain. But my solution fixes the issue with my project. It wasn't anything with my code that messed it up.

Hope this helps someone.

Dead thread, I know, but here is the solution to the whole problem.

The search button has an OnClick attribute that it is running when you search for something. In the code behind for the search button remove "Handles SearchButton.Click" from the Protected Sub.

Both of those are telling the search to happen so you get a double search out of it.

This sometimes happens when posting an ad as well.

Again, in case someone happens accross this post with the same issue.