<PackageReference Include="NETStandard.Library" Version="2.0.2" />

System.UriBuilder

public class UriBuilder
namespace System { public class UriBuilder { public string Fragment { get; set; } public string Host { get; set; } public string Password { get; set; } public string Path { get; set; } public int Port { get; set; } public string Query { get; set; } public string Scheme { get; set; } public Uri Uri { get; } public string UserName { get; set; } public UriBuilder(); public UriBuilder(string uri); public UriBuilder(string schemeName, string hostName); public UriBuilder(string scheme, string host, int portNumber); public UriBuilder(string scheme, string host, int port, string pathValue); public UriBuilder(string scheme, string host, int port, string path, string extraValue); public UriBuilder(Uri uri); } }