获取没有端口.net的地址，并将地址+端口构造到端点

Question

From a URL like " http://localhost:2111/ " How to separate the address part : http://localhost/ from the port part: 2111? Is there a data structure that allow me to separate or construct http://localhost:2111/ to/from its address and port?

Answer 1

Use this:

Uri uri = new Uri("http://localhost:2111/");
string newUri = uri.Scheme + "://" + uri.Host + "/";
Console.WriteLine(newUri);

// Output:
// http://localhost/

To do the opposite:

Uri uri = new Uri("http://localhost/");
string newURI = uri.AbsoluteUri + uri.Port;

For me uri.Ports returns 80 , I don't know if it works for you but give it a try.

Answer 2

UriBuilder can be used to remove the port from the url by setting its port value to either -1 or 80:

var uriBuilder = new UriBuilder("http://localhost:2111/");
uriBuilder.Port = -1;  // or 80
string newUrl = uriBuilder.Uri.AbsoluteUri;
Console.WriteLine(newUrl);

The above will output http://localhost/ .

If you want to add them back together then use UriBuilder again and set the port to 2111:

var uriBuilder = new UriBuilder("http://localhost/");
uriBuilder.Port = 2111;
string newUrl = uriBuilder.Uri.AbsoluteUri;
Console.WriteLine(newUrl);

The above will output http://localhost/2111 .