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

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C# / CSharp Tutorial » Language Basics » ref

1. 11. 6. Use ref for reference type


 



using System;





class MyClass

{

   public int Val = 20;                  

}



class MainClass

{

   static void MyMethod(ref MyClass myObject, ref int intValue)

   {

      myObject.Val = myObject.Val + 5;               

      intValue = intValue + 5;                       

   }



   static void Main()

   {

      MyClass myObject = new MyClass();

      int intValue = 10;



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



      MyMethod(ref myObject, ref intValue);          



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

   }

}

Before -- myObject.Val: 20, intValue: 10
After  -- myObject.Val: 25, intValue: 15

1. 11. ref
	1. 11. 1.	Use ref to pass a value type by reference
	1. 11. 2.	Swap two values
	1. 11. 3.	Swap two references.
	1. 11. 4.	Use out for reference type
	1. 11. 5.	Use ref for int value
	1. 11. 6.	Use ref for reference type
	1. 11. 7.	Change string using ref keyword

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