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所有的数组的遍历，都来自于IEnumerable，所以对IEnumerable的遍历 public static void Print(IEnumerable myList) { int i = 0; foreach (Object obj in myList) { if (obj is Student) //这个是类型的判断，这里Student是一个类或结构 { Student s=(Student)obj; Console.WriteLine( "t[{0}]:t{1}" , i++, s.Sname); } if (obj is int ) { Console.WriteLine( "INT:{0}" ,obj); } } Console.WriteLine(); } 相关的： if (args == null ) { Console.WriteLine( "args is null" ); // Check for null array } else { Console.Write( "args length is " ); Console.WriteLine(args.Length); // Write array length for ( int i = 0; i < args.Length; i++) // Loop through array { string argument = args[i]; Console.Write( "args index " ); Console.Write(i); // Write index Console.Write( " is [" ); Console.Write(argument); // Write string Console.WriteLine( "]" ); } } Console.ReadLine(); Console.Write( "请输入：" ); string contents = Console.ReadLine(); Console.WriteLine( "刚输入的内容是：" + contents + "——" + cTest.Contents); Console.Read(); 转载地址：http://rozmi.baihongyu.com/