Relative and Absolute URLS with Directories

Question

I'm just new to creating and launching web sites and i've hit a stumbling block.

I have a hosting account with 3 different domains assigned to it. Each domain is mapped to a section of the main directory. So it goes like this:

My Site - 
           -Site1
           -Site2
           -Site3

However i can't seem to use the same URLs which work locally on the hosted site and vice versa. This is an example of the code i use in a link:

<asp:MenuItem NavigateUrl="/Default.aspx" Text="Home"/>

This works fine when uploaded to the host, but locally i get an error:

HTTP Error 404 - Not Found.

And when i leave off the /

 <asp:MenuItem NavigateUrl="About.aspx" Text="About"/>

It will work locally but i will get an error when hosted:

Resource cannot be found:
Requested URL: /Site1/Site1/About.aspx

I've used ~, ../, default.aspx etc and it'll always work on one, but not the other. I'm sure im missing something dead simple but just can't work it out.

Answer 1

Try this

<asp:MenuItem NavigateUrl="/ProgectName/About.aspx" Text="About"/>

Or ServerSide

Menu1.Items.Add(new MenuItem { NavigateUrl = Page.ResolveUrl("About.aspx"), Text = "About"});