类型或命名空间'定时器'名称不存在于名称空间'系统'

Question

我相信这个答案远没有我的大脑看起来那么困难，但我似乎无法弄清楚这一点。

我正在尝试为我开始的游戏设置一个计时器，下面主要介绍一些基本知识。我甚至用EXACT代码作为教程创建了一个新项目，并且我不断得到相同的错误。尽管看到代码在教程中运行完美...

我很感激任何帮助，如果你可以让我知道我搞乱了什么，为什么，而不是纠正代码。我正在做这个学习项目，所以我想知道如何在将来防止这种情况。提前致谢！

哦，我不知道它是否重要，但我使用Microsoft Visual C＃2010 Express。

4错误，相同的消息。行10，66，67，和72

using System; 
using System.Collections.Generic; 

namespace rout3reset 
{ 
public class RogueLike 
{ 
    static bool isGameAlive = true; 
    static Player player; 
    static System.Timers.Timer World; //timer declare 

    public class Player // 
    { 
     public char CHR = '@'; // Symbol for player 
     public Vector position; // X, Y coordinates tracker 
     public string Name = ""; 
     public short Health = 25; // Base health 
     public short Mana = 25; // Base Mana 
     public Player() //player constructor 
     { 
      position = new Vector(1, 1); // sets spawn point 
     } 
     public void Update() // get handle controls 
     { 

     } 
    } 
    public class AI // 
    { 

    } 

    public class Tree // 
    { 

    } 

    public class Vector 
    { 
     public short X; 
     public short Y; 
     public Vector(short X, short Y) // Main constructor 
     { 
      this.X = X; 
      this.Y = Y; 
     } 
     public Vector() // Overload of 1 
     { 
      this.X = 0; 
      this.Y = 0; 
     } 
    } 

    static void Main(string[] args) 
    { 
     Initialize(); 
     do 
     { 
      player.Update(); 
     } 
     while (isGameAlive); 
    } 

    static void Initialize() 
    { 
     World = new System.Timers.Timer(50); //Sets timer elapse point (50 milliseconds) 
     World.Elapsed += new System.Timers.ElapsedEventHandler(Draw); //Start timer 
     World.Start(); 
     player = new Player(); 
    } 

    static void Draw(object sender, System.Timers.ElapsedEventArgs e) // Handles world timer tick 
    { 
     Console.Clear(); 
     Console.WriteLine("########################################"); //40 Spaces wide by 20 spaces tall 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("#--------------------------------------#"); 
     Console.WriteLine("########################################"); 

     Console.WriteLine("-{0} HP: {1} MP: {2}", player.Name, player.Health, player.Mana); //STAT BAR 

     Console.SetCursorPosition(player.position.X, player.position.Y); //sets proper char position for player symbol 
     Console.Write(player.CHR); //draws the players char 
    } 
    static void Updateworld() //update non-player, non-antagonist objects (trees, etc) 
    { 

    } 

} 

}

Answer 1

MSDN告诉我们，System.Timers.Timer是从System.dll中。

命名空间：System.Timers

集：System（在System.dll中）

这听起来像你缺少System.dll参考。请确保您引用它：