Passing Data to a Thread

We can pass a lambda expression to a thread:


using System;
using System.Threading;

class ThreadTest
{
    static void Main()
    {
        Thread t = new Thread(() => Print("Hello from t!"));
        t.Start();
    }

    static void Print(string message) { 
       Console.WriteLine(message); 
    }

}

The output:


Hello from t!

Another technique is to pass an argument into Thread's Start method:


using System;
using System.Threading;

class ThreadTest
{
    static void Main()
    {
        Thread t = new Thread(Print);
        t.Start("Hello from t!");
    }

    static void Print(object messageObj)
    {
        string message = (string)messageObj;  // We need to cast here
        Console.WriteLine(message);
    }
}

The output:


Hello from t!

Thread's constructor is overloaded to accept either of two delegates:


public delegate void ThreadStart();
public delegate void ParameterizedThreadStart (object obj);
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