Hi Naomi,

OK, I'm confused. A button click can be detected at both the client and server side. Js it's "OnClick" (I think) and it's Button1_Click on the code behind. Maybe you need to create a custom server-side control to do what you want and avoid the js?

>>Why is the js script a problem at all? Build the dataset in the code-behind code. I don't see the difficulty.
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>I don't want to create DataSet in Page.Load as it's currently done. I only want to create DataSet once the button is clicked. But since button only executes JavaScript code I don't see a way to detect the button was clicked in the code behind. Any good ideas from you on the problem?