User-1823825456 posted
if u mean creating an user control, then u can add an user control from the add new item window.
then a form n a cs file wil be generated for it. u can design in ascx page n code it in cs page.
after creating it, add a line in the top of the page where u want to use it
<%@ Register Src="ur user cnotrol" TagName="anytagname" TagPrefix="anytagprefix" %>.(this is registering)
n have this line where u want to have the control in tat page.
<anytagprefix:anytagname ID="id for the uc" runat="server" />.
i hope it is clear