C#多线程开发3：给线程传递数据的两种方法

定义需要传递给线程的数据。

class Student
{
    public string Name { get; set; }
    public int Age { get; set; }
    public int Score { get; set; }
}
List<Student> studentList = new List<Student>() {
            new Student(){Name="zhangsan",Age=20,Score=5},
            new Student(){Name="lisi",Age=18,Score=4},
            new Student(){Name="wangwu",Age=19,Score=5}
};

方法1：使用ParameterizedThreadStart委托来传递数据

static void Main(string[] args)
{
     Thread t = new Thread(new ParameterizedThreadStart(MethodWithParameters));
     t.Start(studentList);
}
static void MethodWithParameters(object o)
{
     List<Student> studentList = (List<Student>)o;
     foreach (Student s in studentList)
     {
          Console.WriteLine(s.Name + "," + s.Age + "," + s.Score);
     }
}

使用ParameterizedThreadStart委托时，线程方法必须满足条件：有一个object类型的参数，且返回类型为void。

可以利用这个object类型的参数传递数据给线程。

方法2：将线程执行的方法与线程需要的数据封装进同一个类

class ThreadModel
{
    private List<Student> studentList;

    public ThreadModel(List<Student> studentList)
    {
        this.studentList = studentList;
    }

     public void ThreadMethod()
     {
         foreach (Student s in studentList)
         {
             Console.WriteLine(s.Name + "," + s.Age + "," + s.Score);
          }
     }
}
static void Main(string[] args)
{
    ThreadModel threadModel = new ThreadModel(studentList);
    Thread t = new Thread(new ThreadStart(threadModel.ThreadMethod));
    t.Start();
}

在创建ThreadModel类对象时，通过构造函数传入线程需要的数据。