Use out for reference type : ref « Language Basics « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Language Basics
3. ref

using System;

class MyClass
{
   public int Val = 20;                     
}

class MainClass
{
   static void MyMethod(out MyClass f1, out int f2)
   {
      f1 = new MyClass();                   
      f1.Val = 25;                          
      f2 = 15;                              
   }

   static void Main()
   {
      MyClass myObject = null;
      int intValue;

      MyMethod(out myObject, out intValue);             

      Console.WriteLine("After  -- myObject.Val: {0}, intValue: {1}", myObject.Val, intValue);
   }
}

After  -- myObject.Val: 25, intValue: 15