I have a set of ASP.NET controls:

<asp:LinkButton ID="Find"
    ClientIDMode="Static"
    runat="server"
    CausesValidation="true"
    OnClientClick="$('#Find').attr('disabled', 'disabled'); $('#SearchingLabel').show();">
    <span>Search</span>
</asp:LinkButton>
<asp:Label ID="SearchingLabel"
    ClientIDMode="Static"
    runat="server"
    Text="Searching..."
    style="display: none;" />

and as you can see I'm consuming the OnClientClick so that I can disable the Find button and show the SearchingLabel (and the JavaScript works without error BTW). Pretty basic stuff.

Further, surrounding the CausesValidation attribute, I do have validation controls on the page, but there are no current validation errors.

However, even though I'm not returning false from the JavaScript the page isn't posting back. I've even attempted to return true; but that didn't change anything (not really that surprising but it was worth a try).

I look forward to your feedback!

I have a set of ASP.NET controls:

<asp:LinkButton ID="Find"
    ClientIDMode="Static"
    runat="server"
    CausesValidation="true"
    OnClientClick="$('#Find').attr('disabled', 'disabled'); $('#SearchingLabel').show();">
    <span>Search</span>
</asp:LinkButton>
<asp:Label ID="SearchingLabel"
    ClientIDMode="Static"
    runat="server"
    Text="Searching..."
    style="display: none;" />

and as you can see I'm consuming the OnClientClick so that I can disable the Find button and show the SearchingLabel (and the JavaScript works without error BTW). Pretty basic stuff.

Further, surrounding the CausesValidation attribute, I do have validation controls on the page, but there are no current validation errors.

However, even though I'm not returning false from the JavaScript the page isn't posting back. I've even attempted to return true; but that didn't change anything (not really that surprising but it was worth a try).

I look forward to your feedback!

• c#
• javascript
• asp

• The CausesValidation="true"? Do you have ValidationControls on your page? Those could cause it – codingbiz Commented Jan 7, 2013 at 12:26
• @codingbiz, I do have validation controls on the page, but there are no validation errors. – Mike Perrenoud Commented Jan 7, 2013 at 12:29
• This can also occur if you remove the control or the parent control of the control that you are posting back with, something like OnClientClick="$(this).remove()" will cause the same issue. – David Rogers Commented Jun 2, 2016 at 14:05

2 Answers 2

It seems like you are disabling your button, before the postback.

You could try your page/script without the disabling part in it:

OnClientClick="$('#SearchingLabel').show();"

If this works, try it with a short delay:

OnClientClick="setTimeout(function() { $('#Find').attr('disabled', 'disabled'); }, 100); $('#SearchingLabel').show();"

Try this js code onload

Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequest);
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequest);
function BeginRequest(sender, e) {
    e.get_postBackElement().disabled = true;
    // or your code

}
function EndRequest(sender, e) {
   .......
}