Calling Javascript form a ASP.NET Button located inside of an Update Panel.

Question

I am using JQuery to toggle the visibility of a in a webforms application. I am using an update panel to suppress the postback when my is clicked. What I would like to do when this is clicked is call the JQuery code that I use to toggle the once the postback has completed. What code(client-side or server-side) do I need to implement? Thanks you.

Edit:

I don't just need to fire the toggle event when the postback has completed, but when server-side code says that the user's input is valid.

Answer 1

Sure:

    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);

This is a JavaScRipt callback. Just plug you handler in to toggle your code

Answer 2

you can try this on server side:

if(<input is valid>)
{
ScriptManager.RegisterStartupScript(this.Page,this.Page.GetType(),"Toggle", "your javascript function call", true);
}

this will call your function when the postback completes