i like to call the method in thread with aruguments and return some value here example

class Program { static void Main() { Stopwatch stop = new Stopwatch(); stop.Start(); Thread FirstThread = new Thread(new ThreadStart(Fun1)); Thread SecondThread = new Thread(new ThreadStart(Fun2)); FirstThread.Start(); SecondThread.Start();

    }
    public static void Fun1()
    {
        for (int i = 1; i <= 1000; i++)
        {
            Console.WriteLine("Fun1 writes:{0}", i);
        }
    }
    public static void Fun2()
    {
        for (int i = 1000; i >= 6; i--)
        {
            Console.WriteLine("Fun2 writes:{0}", i);
        }
    }

}

i know this above example run successfully but if method fun1 like this

public int fun1(int i)
{
for (int n = i; n >= i+10; n++)
        {
            Console.WriteLine("Fun2 writes:{0}", i);
        }
}

then how can i call this in thread. Is it possible .Any body Help for me