Mega Code Archive

 

Categories / C# / Language Basics

 

Pass value by reference with read only value

/* Learning C#  by Jesse Liberty Publisher: O'Reilly  ISBN: 0596003765 */  using System;  namespace PassByRef  {      public class Time      {          // 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);          }          // takes references to ints          public void GetTime(ref int h, ref int m, ref int s)          {              h = Hour;              m = Minute;              s = Second;          }          // constructor          public Time(System.DateTime dt)          {              Year = dt.Year;              Month = dt.Month;              Date = dt.Day;              Hour = dt.Hour;              Minute = dt.Minute;              Second = dt.Second;          }      }     public class TesterPassByRef     {        public void Run()        {            System.DateTime currentTime = System.DateTime.Now;            Time t = new Time(currentTime);            t.DisplayCurrentTime();            int theHour = 0;            int theMinute = 0;            int theSecond = 0;            // pass the ints by reference            t.GetTime(ref theHour, ref theMinute, ref theSecond);            System.Console.WriteLine("Current time: {0}:{1}:{2}",                theHour, theMinute, theSecond);        }        static void Main()        {           TesterPassByRef t = new TesterPassByRef();           t.Run();        }     }  }