这篇文章主要介绍“C# Hello World的写法有哪些”,在日常操作中,相信很多人在C# Hello World的写法有哪些问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”C# Hello World的写法
这篇文章主要介绍“C# Hello World的写法有哪些”,在日常操作中,相信很多人在C# Hello World的写法有哪些问题上存在疑惑,小编查阅了各式资料,整理出简单好用的操作方法,希望对大家解答”C# Hello World的写法有哪些”的疑惑有所帮助!接下来,请跟着小编一起来学习吧!
C# Hello World写法入门:
初学者
public class HelloWorld { public static void Main() { System.Console.WriteLine("HELLO WORLD"); } }
改进的HELLO WORLD
using System; public class HelloWorld { public static void Main() { Console.WriteLine("HELLO WORLD"); } }
命令行形式
using System; public class HelloWorld { public static void Main(string[] args) { Console.WriteLine(args[0]); } }
构造函数
using System; public class HelloWorld { public HelloWorld() { Console.WriteLine("HELLO WORLD"); } public static void Main() { HelloWorld hw = new HelloWorld(); } }
C# Hello World写法进阶:
using System; public class HelloWorld { public void helloWorld() { Console.WriteLine("HELLO WORLD"); } public static void Main() { HelloWorld hw = new HelloWorld(); hw.HelloWorld(); } }
从其他类
using System; public class HelloWorld { public static void Main() { HelloWorldHelperClass hwh = new HelloWorldHelperClass(); hwh.writeHelloWorld(); } } public class HelloWorldHelperClass { public void writeHelloWorld() { Console.WriteLine("Hello World"); } }
继承
abstract class HelloWorldBase { public abstract void writeHelloWorld(); } class HelloWorld : HelloWorldBase { public override void writeHelloWorld() { Console.WriteLine("Hello World"); } } class HelloWorldImp { static void Main() { HelloWorldBase hwb = HelloWorld; HelloWorldBase.writeHelloWorld(); } }
静态构造函数
using System; public class HelloWorld { private static string strHelloWorld; static HelloWorld() { strHelloWorld = "Hello World"; } void writeHelloWorld() { Console.WriteLine(strHelloWorld); } public static void Main() { HelloWorld hw = new HelloWorld(); hw.writeHelloWorld(); } }
异常处理
using System; public class HelloWorld { public static void Main(string[] args) { try { Console.WriteLine(args[0]); } catch(IndexOutOfRangeException e) { Console.WriteLine(e.ToString()); } } }
名字空间
using System; namespace HelloLibrary { public class HelloMessage { public string Message { get { return "Hello, World!!!"; } } } } ------ using System; using HelloLibrary; namespace HelloApplication { class HelloApp { public static void Main(string[] args) { HelloMessage m = new HelloMessage(); } } }
属性
using System; public class HelloWorld { public string strHelloWorld { get { return "Hello World"; } } public static void Main() { HelloWorld hw = new HelloWorld(); Console.WriteLine(cs.strHelloWorld); } }
代理
using System; class HelloWorld { static void writeHelloWorld() { Console.WriteLine("HelloWorld"); } static void Main() { SimpleDelegate d = new SimpleDelegate(writeHelloWorld); d(); } }
使用属性
#define DEBUGGING using System; using System.Diagnostics; public class HelloWorld : Attribute { [Conditional("DEBUGGING")] public void writeHelloWorld() { Console.WriteLine("Hello World"); } public static void Main() { HelloWorld hw = new HelloWorld(); hw.writeHelloWorld(); } }
接口
using System; interface IHelloWorld { void writeHelloWorld(); } public class HelloWorld : IHelloWorld { public void writeHelloWorld() { Console.WriteLine("Hello World"); } public static void Main() { HelloWorld hw = new HelloWorld(); hw.writeHelloWorld(); } }
C# Hello World的特别写法:
动态Hello World
using System; using System.Reflection; namespace HelloWorldNS{ public class HelloWorld { public string writeHelloWorld() { return "HelloWorld"; } public static void Main(string[] args) { Type hw = Type.GetType(args[0]); // Instantiating a class dynamically object[] nctorParams = new object[] {}; object nobj = Activator.CreateInstance(hw, nctorParams);//, nctorParams); // Invoking a method object[] nmthdParams = new object[] {}; string strHelloWorld = (string) hw.InvokeMember("writeHelloWorld", BindingFlags.Default | BindingFlags.InvokeMethod, null, nobj, nmthdParams); Console.WriteLine(strHelloWorld); } }
不安全代码Hello World
using System; public class HelloWorld { unsafe public void writeHelloWorld(char[] chrArray) { fixed(char *parr = chrArray) { char *pch = parr; for(int i=0; i< chrArray.Length; i++) Console.Write(*(pch+i)); } } public static void Main() { HelloWorld hw = new HelloWorld(); char[] chrHelloWorld = new char[] {'H','e','l','l','o', ' ', 'W','o','r','l','d'}; hw.writeHelloWorld(chrHelloWorld); } }
使用InteropServices
using System; using System.Runtime.InteropServices; class Class1 { [DllImport("kernel32")] private static extern int Beep(int dwFreq, int dwDuration); static void Main(string[] args) { Console.WriteLine("Hello World"); Beep(1000, 2000); } }
到此,关于“C# Hello World的写法有哪些”的学习就结束了,希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习,快去试试吧!若想继续学习更多相关知识,请继续关注编程网网站,小编会继续努力为大家带来更多实用的文章!
--结束END--
本文标题: C# Hello World的写法有哪些
本文链接: https://lsjlt.com/news/294428.html(转载时请注明来源链接)
有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341
2024-05-24
2024-05-24
2024-05-24
2024-05-24
2024-05-24
2024-05-24
2024-05-24
2024-05-24
2024-05-24
2024-05-24
回答
回答
回答
回答
回答
回答
回答
回答
回答
回答
0