Selected Item not changing when selected on drop down list

Question

5.00/5 (1 vote)

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Hi all,

I am selecting an item in a drop down list by making it equal to the value in a database, however, when the user goes to select a new item and then press the update button, the old value is still displayed.

How can I make it so that once the value is changed, the item is changed?

The code I have is as follows:

dropdownlist1.SelectedIndex = dropdownlist1.Items.IndexOf(dropdownlist1.Items.FindByValue(query.Status));

"query" is a LINQ query.

Posted 22-Jan-12 8:48am

Scrappy 1871

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4 solutions

Solution 2

plz confirm that you have made autopostback==true

Posted 23-Jan-12 2:26am

Rockstar_

Solution 3

in design view clcik on smart tag .and check autopost back .

Posted 23-Jan-12 23:32pm

rajendra pratap singh

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Espen Harlinn · Accepted Answer · 2012-01-22T08:59:00

Solution 1

Well, what you are doing looks right - depending on when it's happening during the page lifecycle - ASP.NET Page Life Cycle[^].

You also have to make sure that there are items in the dropdownlist1 before setting SelectedIndex - if the control is bound, this has to happen after binding has completed and not on postbacks.

Best regards
Espen Harlinn

Posted 22-Jan-12 8:59am

Espen Harlinn

Comments

Scrappy 1871 22-Jan-12 15:10pm

Hiya,

I am doing the code in the Page_Load, with the values being added in the markup.

Espen Harlinn 22-Jan-12 15:16pm

Check that the page is not in a postback before setting SelectedIndex.

if(IsPostBack == false)
{
dropdownlist1.SelectedIndex = dropdownlist1.Items.IndexOf
(dropdownlist1.Items.FindByValue(query.Status));
}

angappans · Accepted Answer · 2012-01-23T23:38:00

Solution 4

check whether dropdown list properties is autopostback=true;
and using page_load coding use
if(!page.Ispostback==true)
{
//change dropdownlist selectedindex value..
}

Posted 23-Jan-12 23:38pm

angappans