Threading, communication between two threads c#

I'm wondering what is the best way to implement communication between two threads. I have one thread that generates random number(class Sender) and now I want to have another thread(class Receiver) that 'll receive generated random number. This is Sender:

public  class Sender
{
    public int GenerateNumber(){


        //some code
        return randomNumber;
    }
}

Afcourse in Main function I'll start those threads:

static void Main(string[] args){

     Sender _sender=new Sender();
     Thread thread1=new Thread(new ThreadStart(_sender.GenerateNumber));

}

I appreciate your help