OnCheckedChanged not firing when clicked

Question

I'm trying to run my OnCheckedChanged inside an itemtemplate, but it is not firing. What I did was I typed the OnCheckChanged in the asp:CheckBox tag and also typed the entire method manually. Would this affect the process??

 <asp:CheckBox runat="server" ID="uoCheckBoxTagtoVehicle" OnCheckedChanged="ChkChanged" AutoPostBack="true" Width="50px"   />

and my event:

protected void ChkChanged(object sender, EventArgs e)
{
    uoHiddenFieldVehicle.Value = "1";
}

Note: I'm using Visual studio 2008

are you using grid inside updatepanel or without updatepanel? — Manish Sharma, Sep 02 '14 at 07:10

Tim Schmelter · Answer 1 · 2014-09-02T08:10:41.630

1

Maybe you are databinding the page also on postback. You should do that only ...

if(!IsPostBack)
{
    DataBindPage(); // method which databinds your controls like GridView
}

Otherwise you prevent that events are triggered.

edited Sep 02 '14 at 08:10

answered Sep 02 '14 at 07:07

Tim Schmelter

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score 1 · Accepted Answer · answered Sep 02 '14 at 07:45

Since your control is inside a GridView (since you said ItemTemplate I assume you do) you can't use your approach to attach the event as you did. Because there will be multiple check boxes once you populate the GridView. Therefore, do the following

In you GridView's DataBinding event find the CheckBox by ID (use FindControl method)
Then attach the event OnCheckedChanged to the method you've written

OnCheckedChanged not firing when clicked

2 Answers2