You can create user control as add->;New Item->;WebUserControl
Here you can create controls as you needed
then just add the user control to your page as,
<%@ Register Src="../Controls/UserContrl.ascx" TagName="UsrCntrl" TagPrefix="uc1" %>;
Then in your body section
just use
<uc1:UsrCntrl runat="server" id="us" />
If you have any doubt.feel free to ask..