/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa

Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
//
//  Enum.cs - Demonstrates using a public enum in one class from
//            another class
//
//             Compile this program with the following command line:
//                 C:>csc enum.cs
//
namespace nsEnum
{
    using System;
    public class Enum
    {
//  Define the enum type
        public enum Weekdays
        {
                Sun, Mon, Tues, Wed, Thurs, Fri, Sat, Count
        }
        static public void Main ()
        {
            clsSecond second = new clsSecond();
            second.ShowEnum ();
        }
    }
    class clsSecond
    {
        public void ShowEnum()
        {
//  Use the class name with the enum name
            Console.WriteLine ("Tuesday is day {0} in the week",
                                (int) Enum.Weekdays.Tues);
        }
    }
}


           
         
    
     

   
  
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa

Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/

//
//  BaseEnum.cs - Demonstrates how a derived class may override an existing
//                enumeration in a base class
//
//             Compile this program with the following command line:
//                 C:>csc baseenum.cs
//
namespace nsEnum
{
    using System;
    public class clsBaseClass
    {
//  Define the enum type
        public enum Weekdays
        {
                Sun, Mon, Tues, Wed, Thurs, Fri, Sat
        }
        static public void Main ()
        {
            Console.WriteLine ("In base class, Sunday = " +
                               (int) Weekdays.Sun);
            clsNewClass second = new clsNewClass();
            second.ShowEnum ();
        }
    }
    class clsNewClass : clsBaseClass
    {
        public new enum Weekdays
        {
                Sun = 1, Mon, Tues, Wed, Thurs, Fri, Sat
        }
        public void ShowEnum()
        {
//  Use the class name with the enum name
            Console.WriteLine ("In derived class, Sunday = " +
                               (int) Weekdays.Sun);
        }
    }
}

           
         
    
     

   
  
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example2_12.cs illustrates the use of an enumeration
  that defines the orbital periods of the first four
  planets in days, using a base type of long
*/

public class Example2_121
{

  enum PlanetPeriods :long
  {
    Mercury = 88,
    Venus = 225,
    Earth = 365,
    Mars = 687
  }

  public static void Main()
  {

    System.Console.WriteLine("Orbital period for Mars = " +
      (long) PlanetPeriods.Mars + " days");

  }

}

           
         
    
     

   
  
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example2_11.cs illustrates the use of an enumeration
  that defines the orbital periods of the first four
  planets in days
*/

public class Example2_111
{

  enum PlanetPeriods
  {
    Mercury = 88,
    Venus = 225,
    Earth = 365,
    Mars = 687
  }

  public static void Main()
  {

    System.Console.WriteLine("Orbital period for Mars = " +
      (int) PlanetPeriods.Mars + " days");

  }

}


           
         
    
     

   
  
/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example2_10.cs illustrates the use of an enumeration
  that defines the positions of the planets in
  the solar system relative to the Sun
*/

public class Example2_10
{

  enum Planets
  {
    Mercury = 1,
    Venus,
    Earth,
    Mars,
    Jupiter,
    Saturn,
    Uranus,
    Neptune,
    Pluto
  }

  public static void Main()
  {

    System.Console.WriteLine("Position of Earth = " +
      (int) Planets.Earth);

    System.Console.WriteLine("Planets.Earth = " +
      Planets.Earth);

  }

}


           
         
    
     

   
  
/*
Learning C# 
by Jesse Liberty

Publisher: O'Reilly 
ISBN: 0596003765
*/
public class EnumValues
 {
    // declare the enumeration
    enum Temperatures
    {
       WickedCold = 0,
       FreezingPoint = 32,
       LightJacketWeather = 60,
       SwimmingWeather = 72,
       BoilingPoint = 212,
    }

    static void Main( )
    {

       System.Console.WriteLine("Freezing point of water: {0}",
          (int) Temperatures.FreezingPoint );
       System.Console.WriteLine("Boiling point of water: {0}",
          (int) Temperatures.BoilingPoint );
    }
 }

           
         
    
     

   
  
/*
Learning C# 
by Jesse Liberty

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

 namespace Enumeration
 {
     using System;
     using System.Collections;

     // implements IEnumerable
     class ListBoxTest : IEnumerable
     {
         private string[] strings;
         private int ctr = 0;

         // private nested implementation of ListBoxEnumerator
         private class ListBoxEnumerator : IEnumerator
         {
             // member fields of the nested ListBoxEnumerator class
             private ListBoxTest currentListBox;
             private int index;

             // public within the private implementation
             // thus, private within ListBoxTest
             public ListBoxEnumerator(ListBoxTest currentListBox)
             {
                 // a particular ListBoxTest instance is
                 // passed in, hold a reference to it
                 // in the member variable currentListBox.
                 this.currentListBox = currentListBox;
                 index = -1;
             }

             // Increment the index and make sure the
             // value is valid
             public bool MoveNext()
             {
                 index++;
                 if (index >= currentListBox.strings.Length)
                     return false;
                 else
                     return true;
             }

             public void Reset()
             {
                 index = -1;
             }

             // Current property defined as the
             // last string added to the listbox
             public object Current
             {
                 get
                 {
                     return(currentListBox[index]);
                 }
             }
         }  // end nested class

         // Enumerable classes can return an enumerator
         public IEnumerator GetEnumerator()
         {
             return (IEnumerator) new ListBoxEnumerator(this);
         }

         // initialize the listbox with strings
         public ListBoxTest(params string[] initialStrings)
         {
             // allocate space for the strings
             strings = new String[8];

             // copy the strings passed in to the constructor
             foreach (string s in initialStrings)
             {
                 strings[ctr++] = s;
             }
         }

         // add a single string to the end of the listbox
         public void Add(string theString)
         {
             strings[ctr] = theString;
             ctr++;
         }

         // allow array-like access
         public string this[int index]
         {
             get
             {
                 if (index < 0 || index >= strings.Length)
                 {
                     // handle bad index
                 }
                 return strings[index];
             }
             set
             {
                 strings[index] = value;
             }
         }

         // publish how many strings you hold
         public int GetNumEntries()
         {
             return ctr;
         }

     }

    public class EnumerationTester
    {
       public void Run()
       {
           // create a new listbox and initialize
           ListBoxTest currentListBox =
               new ListBoxTest("Hello", "World");

           // add a few strings
           currentListBox.Add("Who");
           currentListBox.Add("Is");
           currentListBox.Add("John");
           currentListBox.Add("Galt");

           // test the access
           string subst = "Universe";
           currentListBox[1] = subst;

           // access all the strings
           foreach (string s in currentListBox)
           {
               Console.WriteLine("Value: {0}", s);
           }
       }

       [STAThread]
       static void Main()
       {
          EnumerationTester t = new EnumerationTester();
          t.Run();
       }
    }
 }