correct use of tag prefix and tag name?

Question

It looks like both TagPrefix and TagName are both required. I'm wondering what the correct usage of each element would be? The code I've got below doesn't look right, as I repeat the name of the control twice...

<%@ Register TagPrefix="ucCustomerSearch" TagName="ucCustomerSearch" Src="~/UserControls/IndividualSearch.ascx"%>
<%@ Register TagPrefix="ucCustomerList" TagName="ucCustomerSearch" Src="~/UserControls/CustomerList.ascx"%>

 <asp:Content ContentPlaceHolderid="PlaceHolderMain" runat="server">

  <ucCustomerSearch:ucCustomerSearch Title="Search" runat="server" />

     <ucCustomerList:ucCustomerList Title="Customer List" runat="server" />

 </asp:Content>

Solution

Think of TagPrefix like a namespace. You should use the same for both your controls, and it could be something like my or the name of your project or whatever you like really. But it shouldn't be the same as any of your controls.