CODEWITHSUNDEEP
c#asp.netvisual-studio-2010
Chris
Chris

Reputation: 3338

DropDownList events don't fire

I’m having trouble with my DropDownList. The events don’t fire! I've tested it on a separate project, with a DropDownList and a literal. Every time the selected value would change, I would add a little star “*” to the literal. No problems what so ever. But every time I try it on my webpage in the project, it fails.

Here is an image.

protected void ddlConsole_SelectedIndexChanged(object sender, EventArgs e)
{
    ltlTesting.Text += "*";
}

UPDATE:

I've tried some things but still with no succes. I hope someone can tell me what i'm doing wrong. I'm wiring the events in the code behind now, but i've added a linkbutton next to the dropdownlist to see if it works.

protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
        ddlConsole.SelectedIndexChanged += new EventHandler(ddlConsole_SelectedIndexChanged);
        lnkGet.Click += new EventHandler(ddlConsole_SelectedIndexChanged);
    }

Here is an image to see what's going on. The stripe in the literal at the beginning is added in pageload with the same code the star is added. Just to be sure it doesn't load twice. The "GET" linkbutton works fine. The dropdownlist doesn't...

Upvotes: 3

Views: 1040

Answers (5)

Henk Mollema
Henk Mollema

Reputation: 46561

Add the AutoPostback="True" and OnSelectedIndexChanged="ddlConsole_SelectedIndexChanged" to the ddlConsole attributes. You can delete the OnInit method, since you bound the SeletedIndexChanged event at design time.

Upvotes: 0

Carlos Landeras
Carlos Landeras

Reputation: 11063

Have you Set 

AutoPostBack="true"

in control properties??

EDIT:

Remove 

OnSelectedIndexChanged="ddlConsole_SelectedIndexChanged"

from the markup in the ASPX page and try again only with AutoPostback true and the event defined in codebehind. The aspx page should look like this:

 <asp:DropDownList runat="server" ID="ddlConsole" AutoPostBack="True"></asp:DropDownList>

Upvotes: 3

Hedrack
Hedrack

Reputation: 774

If picture is right and the AutoPostBack="True", is there any code that sets the value of ltlTesting when page loads?

Upvotes: 0

Rakesh_HBK
Rakesh_HBK

Reputation: 181

Check AutopostBack property of Dropdownlist set it to true :

Upvotes: 0

abc
abc

Reputation: 2437

Is the AutoPostBack of the dropdownlist true ?

Upvotes: 0

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