Get the domain name of the website in ASP.NET

Dim url, host_url no_http, host_name As String                             'defines the variable
url = HttpContext. Current. Request. Url. ToString                                   'URL
obtains a handle to the current page no_http = url.Substring (url.IndexOf ("//")) + 2 Intercept         'to remove HTTP:// URL
host_url = "http://" & no_http.Substring (0, no_http.IndexOf ("/") + 1)     'combines to form the domain name