C# 多线程传参 三种实例

//using Thread to download files

//1111111111111111
foreach (var str in listDownloadPdf)
{
//string hello1 = "hello world";
//这里也可简写成Thread thread = new Thread(ThreadMainWithParameters);
//但是为了让大家知道这里用的是ParameterizedThreadStart委托，就没有简写了
Thread thread1 = new Thread(new ParameterizedThreadStart(ThreadMainWithParameters));
thread1.Start(str);
}

//2222222222222222222
foreach (var str in listDownloadPdf)
{
MyThread myThread = new MyThread(str);
Thread thread2 = new Thread(myThread.ThreadMain);
thread2.Start();
}

//333333333333333
foreach (var str in listDownloadPdf)
{
//string hello3 = "hello world";
//如果写成Thread thread = new Thread(ThreadMainWithParameters(hello));这种形式，编译时就会报错
Thread thread3 = new Thread(() => ThreadMainWithParameters(str));
thread3.Start();
}

//333333333333333333333
static void ThreadMainWithParameters(string str)
{
Console.WriteLine("33333333333333333,received: {0}", str);
}
//111111111111111111111
static void ThreadMainWithParameters(object obj)
{
string str = obj as string;
if (!string.IsNullOrEmpty(str))
Console.WriteLine("1111111111111111,received: {0}", str);
}

//222222222222222222
public class MyThread
{
private string data;

public MyThread(string data)
{
this.data = data;
}

public void ThreadMain()
{
Console.WriteLine("222222222222222222: {0}", data);
}
}