Pass value by reference : Parameters Passing « Language Basics « C# / C Sharp

1. C# / C Sharp
2. Language Basics
3. Parameters Passing

Pass value by reference

/*
Learning C# 
by Jesse Liberty

Publisher: O'Reilly 
ISBN: 0596003765
*/
 using System;

 namespace PassByRef
 {

     public class Time3
     {
         // private member variables
         private int Year;
         private int Month;
         private int Date;
         private int Hour;
         private int Minute;
         private int Second;

         // Property (read only)
         public int GetHour()
         {
             return Hour;
         }

         // public accessor methods
         public void DisplayCurrentTime()
         {
             System.Console.WriteLine("{0}/{1}/{2} {3}:{4}:{5}",
                 Month, Date, Year, Hour, Minute, Second);
         }

         public void GetTime(int h, int m, int s)
         {
             h = Hour;
             m = Minute;
             s = Second;
         }

         // constructor
         public Time3(System.DateTime dt)
         {

             Year = dt.Year;
             Month = dt.Month;
             Date = dt.Day;
             Hour = dt.Hour;
             Minute = dt.Minute;
             Second = dt.Second;
         }


     }

    public class PassByRefTester
    {
       public void Run()
       {
           System.DateTime currentTime = System.DateTime.Now;
           Time3 t = new Time3(currentTime);
           t.DisplayCurrentTime();

           int theHour = 0;
           int theMinute = 0;
           int theSecond = 0;
           t.GetTime(theHour, theMinute, theSecond);
           System.Console.WriteLine("Current time: {0}:{1}:{2}",
               theHour, theMinute, theSecond);

       }

       static void Main()
       {
          PassByRefTester t = new PassByRefTester();
          t.Run();
       }
    }
 }

           
       

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4.	Simple types are passed by value
5.	Objects are passed by reference
6.	Use ref to pass a value type by reference
7.	Swap two values
8.	Use out
9.	Use two out parameters
10.	Swap two references
11.	Demonstrate params
12.	Use regular parameter with a params parameter
13.	Parameter demo
14.	Passing parameters by reference
15.	Passing parameters by value
16.	Illustrates the use of out parameters
17.	Pass value by reference with read only value
18.	Ref and Out Parameters: compiling error
19.	C# Ref and Out Parameters
20.	Ref and Out Parameters 2