How to fire onchange event of hidden input type

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Hi All,

I have input control whose type is hidden.

Please refer the below html.

ASP.NET

<input id="hdnEasyPLarID" type="hidden" class="hdnEasyPLarIDClass" runat="server" ="EasyP_ID_Changed();" />

The value of hidden input is changed programmatically either by code behind(c#) or by using script.

But the onchange event is not firing when the value is changed.

Kindly advise me how to proceed.

Thanks in Advance.

Posted 17-Mar-15 19:39pm

nimalan sivakumar

Updated 17-Mar-15 19:44pm

RajeeshMenoth

v2

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2 solutions

Solution 1

The onchange event is a user event. It will not fire if you change the value by script.

It will certainly not fire when changed by the code behind. Since it is a client event. The binding of it will happen after the page has returned from the code behind.

Perhaps you should clarify what you are trying to accomplish.

Posted 18-Apr-15 6:12am

Sebastiaan Meijerink

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F-ES Sitecore · Accepted Answer · 2015-04-18T07:24:00

If you want to use server-events you'll need to use the asp:HiddenField server control.

XML

<script type="text/javascript">
    $(document).ready(function () {
        $("#hdnEasyPLarID").val("world");
    });
</script>

<form id="form1" runat="server">

<asp:HiddenField ID="hdnEasyPLarID" runat="server" OnValueChanged="hdnEasyPLarID_ValueChanged" Value="Hello" />
<asp:Button ID="ButtonSubmit" Text="Submit" runat="server" />

</form>

code behind

C#

protected void hdnEasyPLarID_ValueChanged(object sender, EventArgs e)
{
    string value = hdnEasyPLarID.Value;
}