Question How do I manipulate Website address to remove subdomain if there is one?

[htconex]

How do I manipulate Website address to remove sub-domain if there is one?

For example change en.Wikipedia.org
to
Wikipedia.org


I know I can use
Dim domain As String = Url.Items(i).Split("/"c)(2)

to modify a website address to just show domain
but I'd rather sub-domains didn't show up either.

So Google.com
rather than mail.Google.com

 

[ss7thirty]

I have not personally used this object before, but you could look into the .NET URI object:

Uri Class (System)

 

[htconex]

Thank you for giving me some information but i've already looked into that.
But if anyone else can help me with this, that would be great

 

[JohnH]

or you can use the Uri class, for example like this:

    Function GetDomain(u As Uri) As String
        If u.HostNameType <> UriHostNameType.Dns Then Return String.Empty
        Dim parts = u.Host.Split("."c)
        If parts.Length > 1 Then
            Return String.Join(".", parts, parts.Length - 2, 2)
        Else
            Return parts(0)
        End If
    End Function

 

[htconex]

I would normally call a function with a string i.e. http://mail.google.com/
How do i do this with the above function as I get the error

Error 1 Value of type 'String' cannot be converted to 'System.Uri'. C:\Users\HtcOneX\AppData\Local\Temporary Projects\WindowsApplication1\Form1.vb 13 19 WindowsApplication1

 

[JohnH]

You can load a string url into a Uri using one of its constructors, for example Uri Constructor (String) (System)

 

[htconex]

Thanks that worked