Use SharePoint:ProjectProperty in C# -

excuse me if simple or there's better way this. want subsite's url, , use in master page in c#. know can use <sharepoint:projectproperty property="url" runat="server"/> in master page grab url property, want able use in c# block. end goal able include content file , output through master page.

you can url value spsite

specifically, can value current site:

spcontext.current.site.url 

the url property contains string such http://host_name:80/sites/site_name. note url not end slash ("/").