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How to do a click once button in AJAX

, 7 Feb 2008
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A click once button.

Introduction

This code makes a button clickable only once.

Background

I did a page with an UpdatePanel on it.

Since I had a lot of controls between the order button (BESTÄLL) and the panel, I did the order button external to the panel.

I needed the order button clickable only once, in order to achieve this:

Two.JPG

Using the Code

I added an onSubmit method to the form:

<form id="form1" runat="server" 
  onsubmit="document.form1.btnOrder.disabled = true;return true;"> 
...
<button id="btnOrder" style="MARGIN-LEFT: 20%" 
  runat="server" text="BESTÄLL"></button>

Points of Interest

The key to make it work is:

return true;

Otherwise, the server side event doesn't trigger.

Comments

I would appreciate feedback and tips on a more .NET-tish way of doing this.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Michael Rosqvist
Web Developer
Sweden Sweden
No Biography provided

Comments and Discussions

 
General[My vote of 1] Not working PinmemberVuyiswa Maseko20-Aug-09 3:46 
GeneralUse an extender, create a behavior Pinmemberalexgoodbox7-Feb-08 17:49 
GeneralOr Else Pinmemberdjsolid7-Feb-08 2:04 

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