パラメータをスレッドに渡す C# プログラム

using System.Threading;

Thread thread = new Thread(threadDemo);

thread.Start(str);

String str = "Hello World!";

using System;
using System.Threading;
namespace Sample {
   class Demo {
      static void Main(string[] args) {
         String str = "Hello World!";
         // new thread
         Thread thread = new Thread(threadDemo);
         // passing parameter
         thread.Start(str);
      }
      static void threadDemo(object str) {
         Console.WriteLine("Value passed to the thread: "+str);
      }
   }
}

Value passed to the thread: Hello World!