Objects are passed by reference. : Parameter Reference « Language Basics « C# / CSharp Tutorial

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C# / CSharp Tutorial » Language Basics » Parameter Reference

1. 13. 2. Objects are passed by reference.


 

 

using System; 

 

class Test { 

  public int a, b; 

 

  public Test(int i, int j) { 

    a = i; 

    b = j; 

  } 

 

  /* Now, ob.a and ob.b in object 

     used in the call will be changed. */ 

  public void change(Test ob) { 

    ob.a = ob.a + ob.b; 

    ob.b = -ob.b; 

  } 

} 

 

class MainClass { 

  public static void Main() { 

    Test ob = new Test(15, 20); 

 

    Console.WriteLine("ob.a and ob.b before call: " + 

                       ob.a + " " + ob.b); 

 

    ob.change(ob); 

 

    Console.WriteLine("ob.a and ob.b after call: " + 

                       ob.a + " " + ob.b); 

  } 

}

ob.a and ob.b before call: 15 20
ob.a and ob.b after call: 35 -20

1. 13. Parameter Reference
	1. 13. 1.	Pass references to methods
	1. 13. 2.	Objects are passed by reference.
	1. 13. 3.	Use ref to pass a value type by reference

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