【转载】在C#中主线程和子线程如何实现互相传递数据

引用：https://blog.csdn.net/shuaihj/article/details/41316731

一、不带参数创建Thread 

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Threading; 
 
namespace ATest  
{ 
  class A  
  { 
     public static void Main() 
     { 
        Thread t = new Thread(new ThreadStart(A)); 
        t.Start(); 
 
        Console.Read(); 
      } 
 
      private static void A() 
      { 
         Console.WriteLine("不带参数 A!"); 
      } 
   } 
}

　　结果显示“不带参数 A!”  

二、带一个参数创建Thread  

  由于ParameterizedThreadStart要求参数类型必须为object,所以定义的方法B形参类型必须为object。  

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Threading; 
 
namespace BTest  
{ 
  class B
  { 
     public static void Main() 
     {  
        Thread t = new Thread(new ParameterizedThreadStart(B)); 
        t.Start("B"); 
 
        Console.Read(); 
      } 
 
      private static void B(object obj) 
      { 
        Console.WriteLine("带一个参数 {0}!",obj.ToString ());  
      } 
   } 
}

结果显示“带一个参数 B!”  

三、带多个参数创建Thread  

   由于Thread默认只提供了这两种构造函数，如果需要传递多个参数，可以基于第二种方法，将参数作为类的属性传给线程。 

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Threading; 
 
namespace CTest  
{ 
  class C
  { 
     public static void Main() 
     { 
        MyParam m = new MyParam(); 
        m.x = 6; 
        m.y = 9; 
 
        Thread t = new Thread(new ThreadStart(m.Test)); 
        t.Start(); 
 
        Console.Read(); 
      } 
  } 
  
  class MyParam  
  { 
     public int x, y; 
 
     public void Test() 
     { 
         Console.WriteLine("x={0},y={1}", this.x, this.y); 
     } 
   } 
}

结果显示“x=6,y=9”  

四、利用回调函数给主线程传递参数   
   我们可以基于方法三，将回调函数作为类的一个方法传进线程，方便线程回调使用。

using System; 
using System.Collections.Generic; 
using System.Text; 
using System.Threading; 
 
namespace CTest  
{ 
  class C
  { 
     public static void Main() 
     { 
        MyParam m = new MyParam(); 
        m.x = 6; 
        m.y = 9; 
        m.callBack = ThreadCallBack;
 
        Thread t = new Thread(new ThreadStart(m.Test)); 
        t.Start(); 
 
        Console.Read(); 
     } 
  } 

  private void ThreadCallBack(string msg)
  {
     Console.WriteLine("CallBack:" + msg);  
  }
 
  private delegate void ThreadCallBackDelegate(string msg);

  class MyParam  
  { 
     public int x, y; 
     public ThreadCallBackDelegate callBack;
 
     public void Test() 
     { 
        callBack("x=6,y=9"); 
     } 
   } 
}

结果显示“CallBack:x=6,y=9”