Highlights of Week 08/2010
Posted by Michael Gaigg
Wow, what a week with truly amazing content which once more shows me how many talented and dedicated people are on the web. Thanks all for sharing your knowledge!!
- Vancouver Olympics Web sites are inaccessible to disabled people (by Joe Clark) - hope at least the website of the Special Olympics will be... Joe, wanna check?
- The Comprehensive Guide to Saving Images for the Web (by Joshua Johnson) - now this I call an essential read!
- E-Commerce Design Resources: The Ultimate Round-Up (by Cameron Chapman) - now this I call ultimate read!
- Life, Below 600px (by Paddy Donnelly) - or, "giving the fold the finger".
- Information Gathering: a Roundup of UX Applications (by James Costa) - James reviews 4 really useful UX applications. Great overview!
- 14 Questions To Ask Your Clients Before and After a Project (by Joel Reyes) - always good to be reminded of the basics.
- Design considerations for article lists (by Anders Toxboe) - Do's and don'ts of article lists are essential knowledge for every designer. Get a hang of it.
- 10 Essential Chrome Extensions for Web Developers (by Samuel Axon) - Firebug Lite, IE Tab, Resolution test and others, a must-see.
- Best Practices for Hints and Validation in Web Forms (by Kean Richmond) - Users hate forms but they are the only way to interact with an application so you better invest some more thought as did Kean.
- The Anatomy of Web Design (by Nishant Kothary) - "Smarter hires, more resources, more time, fewer managers, rational stakeholders, less overhead, stronger leadership, and sensible project management are intrinsic to creating great designs—but they cannot take the place of a strong mission and sense of purpose."
How to Disable Button on form submit in .NET
Posted by Michael Gaigg
This problem seems to be almost too obvious to be posted here but it took me quite some time to actually figure it out how to do it correctly - so I'd might just share it with you.
Disabling the submit button helps users comprehend that their action is in process and waiting for a response can be expected. It also prevents them from clicking the same action more than once which could lead to serious troubles (duplicate entries, application exceptions, etc.)
Problem
How do I disable a form submit button on a .NET page that does client-side validation?
The problem is that the button cannot simply be disabled because it would not be enabled again if the client-side validation prevents the form from being submitted.
Solution
.NET
<asp:Button runat="server" ID="btnSubmit" Text="Submit" OnClientClick="SubmitForm(this);" />
JavaScript:
function SubmitForm(source) {
ret = true;
if (typeof (Page_ClientValidate) == 'function') {
Page_ClientValidate();
ret = Page_IsValid;
}
if (ret) {
source.value = "Processing...";
source.disabled = true;
__doPostBack(source.name, "");
}
return ret;
}
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