I have a Textbox that changes the content of a dropdown in the OnTextChanged event. This event seems to fire when the textbox loses focus. How do I make this happen on the keypress or keyup event?Here is an example of my code\[code\]<asp:TextBox ID="Code" runat="server" AutoPostBack="true" OnTextChanged="Code_TextChanged"> <asp:UpdatePanel ID="Update" runat="server"> <ContentTemplate> <aspropDownList runat="server" ID="DateList" /> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="Code" /> </Triggers></asp:UpdatePanel>\[/code\]So in the codebehind, I bind the dropdown on page load. The Code_TextChanged event just rebinds the dropdown. I would like this to happen on each keypress rather than when the textbox loses focus. I inherited this code recently and this is not the ideal method of doing this for me, but time limitations prevent me from rewriting this in a web servicy method.I have tried using jQuery to bind the "keyup" event to match the "change" event for the textbox, but this only works on the first key pressed.