Is there a way to set a asp.net button's CommandArgument in javascript?

Question

I have a GridView that lists a bunch of items and one of the columns has a link that displays a modal (AjaxToolkit ModalPopupExtender). Let\'s call that link \"Show\". In t

Answer 1

Not a direct answer to your question, but another possible way of solving the problem:

Place a HiddenField control on the page. In your code-behind, before displaying the modal popup, set the value of that control to the ID of the row that was clicked (or the row number, or some identifying value). Then in the code-behind of your Save button, you can just read the value of the HiddenField.