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trouble with viewstates and dynamic web user controls!

Posted Date: 18 Jul 2008 Total Responses: 2

Posted By: lejdi Member Level: Bronze Points: 1

Hi there, I`m new to ASP.NET.
My situation is like that:
I have built a web user control that has 2 dropdownlists and a textBox.
I manage to add as many copies of the control at runtime on the host page as i want. I want that when the user selects an item from the fist dropdownlist the second list gets filled. Also the textbox will take the selected value of the second dropdownlist.

Basically i`m trying to build a filter component for querying a database.

my problem:
when i change the selection in d.d.l.1 event gets fired but value in d.d.l.2 doesn`t change. I debugged and the selected value of d.d.l.1 is set to null..?
I add the items of d.d.l.1 at runtime by parameters that i pass to the constructor of web user control.
I have read about page-life-cycle, viewstates, tried everything but...

There are 2 possibilities:
1-I`m totally idiot- and i messing the whole situation.
2-The situation is really complicated.
i can provide all the code if anybody is interested in helping me.

have a nice time wherever you are and a big thank you in advance!

Responses

Author: Prachi Purwar 18 Jul 2008

Member Level: Gold

Rating:

Points: 4

Hi,

There are two possibilites to generate this problem:
1. You have not set AutopostBack property as true of first dropdown list
2. SelectedIndexChange event is not attached with code behind SelectedIndexChange event. Bind this event with codebehind event.

After that you face any problem, kindly send your code. After that, I will try to resolve your problem.

Thanks,
Prachi Purwar

Author: lejdi 18 Jul 2008

Member Level: Bronze

Rating:

Points: 3

Thanks Prachi for the promt response@ it was all fault of ddl@if i left it with no static list item it generated null exception when i tried to access selected item@that was the problem@i#ll post the code when i#ll be home@ have a nice time@

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