Textbox keypress event

provide more details about your problem.i think you get problem while accessing keypressed character when key is pressed first time according to this i am providing you following a soln:

.aspx code
<asp:TextBox ID="txtUserId" runat="server" onkeyPress="return myfunction(event)></asp:TextBox>

javascript:
function myfunction(e)
{
    var a=e.keyCode;
}

}

this e.keyCode gives you key pressed.i hope it will works

can u tell what code r u using ?