C#查找三个数字中最大值

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Demo {

   class MyApplication {

      static void Main(string[] args) {
         int num1, num2, num3;

         // set the value of the three numbers
         num1 = 10;
         num2 = 20;
         num3 = 50;

         if (num1 > num2) {
            if (num1 > num3) {
               Console.Write(Number one is the largest!\n);
            } else {
               Console.Write(Number three is the largest!\n);
         }
      }

      else if (num2 > num3)
         Console.Write(Number two is the largest!\n);
      else
         Console.Write(Number three is the largest!\n);
      }
   }
}