How to display confirmation message when a checkbox is clicked

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Hello Everyone,

I want to be able to display a confirmation message when asp.net checkbox is clicked, i tried using:

C#

OnClientClick = "return confirm('Are you sure you want to mark register?')"

aspx code:

C#

<asp:CheckBox ID="chkSignIn" runat="server" Text="Sign Out" AutoPostBack="true" OnCheckedChanged="chkSignIn_CheckedChanged" OnClientClick= "return confirm('Are you sure you want to mark register?')" />

it doesnt report error, but not working, i later found out that asp.net checkbox doen't have OnClientClick attribute, i have also done a few research on google still couldn't achieve! Please does anyone know how to do this? Thanks in advance.

Posted 13-Apr-15 4:39am

Uwakpeter

Updated 13-Apr-15 5:08am

v3

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2 solutions

Solution 1

Use onclick instead.

JavaScript

onclick= "return confirm('Are you sure you want to logout?')"

Posted 13-Apr-15 4:46am

ZurdoDev

Comments

Uwakpeter 13-Apr-15 10:52am

OnClick is not working too! it brings out the comfirmation box, but if i clicked ok, the checkbox event is not triggerd!

ZurdoDev 13-Apr-15 10:55am

Post your .aspx code of your checkbox so we can see what you have then.

Uwakpeter 13-Apr-15 11:06am

I have updated the question, with onlick method, the confirmation displays when the box is unchecked, i want it to display on when the box is checked!

ZurdoDev 13-Apr-15 11:13am

Your updated question is still using OnClientClick which does not work on a checkbox.

Using onclick will fire whenever it is clicked. It will fire when checked or unchecked. If you want to have logic that checks what the value is, you can do that. I suggest googling for checking the value of checkbox in jQuery if you are not familiar with how.

Uwakpeter 13-Apr-15 11:34am

onclick event doesnt fire when ok is clicked

ZurdoDev 13-Apr-15 11:35am

What do you mean when "OK is clicked." What is ok? Is that a different button than your checkbox? You've got me confused now.

Uwakpeter 13-Apr-15 13:11pm

the ok button in the confirmation box

ZurdoDev 13-Apr-15 13:24pm

onclick is for the checkbox. Nothing fires when you click OK from confirm(). You get a return result.

I am not understanding you at all now. What exactly is your question?

ZurdoDev 13-Apr-15 13:25pm

The onclick event is what caused the confirm message to show so, what do you mean it doesn't fire?

You've got me thoroughly confused now.

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Richard Deeming · Accepted Answer · 2015-04-13T05:54:00

Combining onclick with AutoPostBack can be tricky. By adding an unconditional return statement, you end up bypassing the code which causes the page to post back to the server.

Try this:

ASP.NET

<asp:CheckBox ID="chkSignIn" runat="server" Text="Sign Out" AutoPostBack="true" OnCheckedChanged="chkSignIn_CheckedChanged" OnClick="if(!confirm('Are you sure you want to mark register?'))return false;" />