thread with multiple parameters

user_100988 0
Viewed 90513

Does anyone know how to pass multiple parameters into a Thread.Start routine?

I thought of extending the class, but the C# Thread class is sealed.

Here is what I think the code would look like:

...
    Thread standardTCPServerThread = new Thread(startSocketServerAsThread);

    standardServerThread.Start( orchestrator, initializeMemberBalance, arg, 60000);
...
}

static void startSocketServerAsThread(ServiceOrchestrator orchestrator, List<int> memberBalances, string arg, int port)
{
  startSocketServer(orchestrator, memberBalances, arg, port);
}

BTW, I start a number of threads with different orchestrators, balances and ports. Please consider thread safety also.

thread-safety parameters multithreading .net c#
11 Answers

Try using a lambda expression to capture the arguments. 

Thread standardTCPServerThread = 
  new Thread(
    unused => startSocketServerAsThread(initializeMemberBalance, arg, 60000)
  );
JaredPar_232830

You need to wrap them into a single object.

Making a custom class to pass in your parameters is one option. You can also use an array or list of objects, and set all of your parameters in that.

user_653580

Use the 'Task' pattern:

public class MyTask
{
   string _a;
   int _b;
   int _c;
   float _d;

   public event EventHandler Finished;

   public MyTask( string a, int b, int c, float d )
   {
      _a = a;
      _b = b;
      _c = c;
      _d = d;
   }

   public void DoWork()
   {
       Thread t = new Thread(new ThreadStart(DoWorkCore));
       t.Start();
   }

   private void DoWorkCore()
   {
      // do some stuff
      OnFinished();
   }

   protected virtual void OnFinished()
   {
      // raise finished in a threadsafe way 
   }
}
user_557740

You can't. Create an object that contain params you need, and pass is it. In the thread function cast the object back to its type.

user_862960

You can take Object array and pass it in the thread. Pass 

System.Threading.ParameterizedThreadStart(yourFunctionAddressWhichContailMultipleParameters)

Into thread constructor.

yourFunctionAddressWhichContailMultipleParameters(object[])

You already set all the value in objArray.

you need to abcThread.Start(objectArray)

user_691110

You could curry the "work" function with a lambda expression:

public void StartThread()
{
    // ...
    Thread standardTCPServerThread = new Thread(
        () => standardServerThread.Start(/* whatever arguments */));

    standardTCPServerThread.Start();
}
user_559430
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