Monday, October 25, 2010

Server-side button click - client side implementation

Recently, I had to override the server-side button OnClick function for a button but unfortunately and I hope you do NOT come across this scenario, but the source code file, the C# file went MISSING.

Yes, I could have use DotNet Reflector to recover the code but I was under a very quick deadline, so here is my approach.

Use jQuery!

What you have to do is to assign a unique CssClass name for the button, which can still be done with just the .aspx file.

And include jQuery as per normal the crucial part is when you declare the jQuery document.ready function, include the following within the document.ready function.

That way, you override the ASP.Net page life cycle, thus when you click the button, this code snippet runs first.

$("input.[insert_unique_css_class_here]").click(function() {
//Validate some other controls. You will have to implement the validateChkBox and validateDdl functions.
var postBackRequired = false;
var postBackIfCbChecked = validateChkBox();
var postBackIfDdl = validateDdl();

if (postBackIfCbChecked && postBackIfDdl) {
postBackRequired = true;

return postBackRequired;

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