C＃
Pop3 pop = new Pop3();
pop.Connect("mail.domain.com");
pop.Login("jdoe", "secret");

VB.NET
Dim pop As New Pop3() 
pop.Connect("mail.domain.com")
pop.Login("jdoe", "secret")

C＃
Pop3 pop = new Pop3();
pop.Connect("mail.domain.com");
pop.Login("jdoe", "secret", AuthenticationMethods.Apop);

VB.NET
Dim pop As New Pop3() 
pop.Connect("mail.domain.com")
pop.Login("jdoe", "secret", AuthenticationMethods.Apop)

C＃
pop.Login("jdoe", "secret", AuthenticationMethods.Auto, AuthenticationOptions.PreferSimpleMethods, null);

VB.NET
pop.Login("jdoe", "secret", AuthenticationMethods.Auto, AuthenticationOptions.PreferSimpleMethods, Nothing)

C＃
pop.Login(null, null, AuthenticationMethods.SaslNtlm);

VB.NET
pop.Login(Nothing, Nothing, AuthenticationMethods.SaslNtlm)

将命令作为子进程执行，并返回它的句柄。
默认情况下，标准输入、标准输出和标准错误是从父级继承的，比如：

use std::process::Command;

Command::new("ls")
        .spawn()
        .expect("ls command failed to start");