/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Demonstrate IDictionaryEnumerator.
using System;
using System.Collections;
public class IDicEnumDemo {
public static void Main() {
// Create a hash table.
Hashtable ht = new Hashtable();
// Add elements to the table
ht.Add("Tom", "555-3456");
ht.Add("Mary", "555-9876");
ht.Add("Todd", "555-3452");
ht.Add("Ken", "555-7756");
// Demonstrate enumerator
IDictionaryEnumerator etr = ht.GetEnumerator();
Console.WriteLine("Display info using through Entry.");
while(etr.MoveNext())
Console.WriteLine(etr.Entry.Key + ": " +
etr.Entry.Value);
Console.WriteLine();
Console.WriteLine("Display info using Key and Value directly.");
etr.Reset();
while(etr.MoveNext())
Console.WriteLine(etr.Key + ": " +
etr.Value);
}
}
ASP.NET & Csharp (C#)
ASP.NET & Csharp (C#) , Here you can find my posts about .NET c# .
Demonstrate an enumerator
/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Demonstrate an enumerator.
using System;
using System.Collections;
public class EnumeratorDemo {
public static void Main() {
ArrayList list = new ArrayList(1);
for(int i=0; i < 10; i++) list.Add(i); // Use enumerator to access list. IEnumerator etr = list.GetEnumerator(); while(etr.MoveNext()) Console.Write(etr.Current + " "); Console.WriteLine(); // Re-enumerate the list. etr.Reset(); while(etr.MoveNext()) Console.Write(etr.Current + " "); Console.WriteLine(); } } [/csharp]
A public enum in one class from another class
/*
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);
}
}
}
how a derived class may override an existing enumeration in a base class
/*
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);
}
}
}
Illustrates the use of an enumeration that defines the orbital periods of the first four planets in days, using a base type of long
/*
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");
}
}
Illustrates the use of an enumeration that defines the orbital periods of the first four planets in 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");
}
}
The use of an enumeration that defines the positions of the planets in the solar system relative to the Sun
/*
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);
}
}