using System;
public class Starter {
public static void Main() {
XClass obj = new XClass();
}
}
public class MyClass {
public MyClass(int param) {
Console.WriteLine("MyClass constructor");
}
}
public class YClass : MyClass {
public YClass(int param) : base(YClass.MethodA()) {
Console.WriteLine("YClass constructor");
}
public static int MethodA() {
Console.WriteLine("YClass constructor initializer");
return 0;
}
}
public class XClass : YClass {
public XClass() : base(XClass.MethodA()) {
Console.WriteLine("XClass constructor");
}
public static new int MethodA() {
Console.WriteLine("XClass constructor initializer");
return 0;
}
}
Software Development
software development notes, main category for Cs, Java, and other programming experiences.
Clone an Object
///////////////////////////////////////////////////////////////////////////////////////////////
//
// This File is Part of the CallButler Open Source PBX (http://www.codeplex.com/callbutler
//
// Copyright (c) 2005-2008, Jim Heising
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation and/or
// other materials provided with the distribution.
//
// * Neither the name of Jim Heising nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
///////////////////////////////////////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Text;
namespace WOSI.Utilities
{
public class ObjectUtils
{
public static object Clone(object objectToClone)
{
object dataObject = Activator.CreateInstance(objectToClone.GetType());
// Fill in our class fields
foreach (System.Reflection.FieldInfo field in dataObject.GetType().GetFields())
{
try
{
if (field.IsPublic)
{
field.SetValue(dataObject, objectToClone.GetType().GetField(field.Name).GetValue(objectToClone));
}
}
catch
{
}
}
// Fill in our class properties
foreach (System.Reflection.PropertyInfo property in dataObject.GetType().GetProperties())
{
try
{
if (property.PropertyType.IsPublic && property.CanWrite)
{
property.SetValue(dataObject, objectToClone.GetType().GetProperty(property.Name).GetValue(objectToClone, null), null);
}
}
catch
{
}
}
return dataObject;
}
}
}
Implements ICloneable
using System;
using System.Text;
using System.Collections.Generic;
public class Employee : ICloneable {
public string Name;
public string Title;
public int Age;
public Employee(string name, string title, int age) {
Name = name;
Title = title;
Age = age;
}
public object Clone() {
return MemberwiseClone();
}
public override string ToString() {
return string.Format("{0} ({1}) - Age {2}", Name, Title, Age);
}
}
public class Team : ICloneable {
public List<Employee> TeamMembers = new List<Employee>();
public Team() {
}
private Team(List<Employee> members) {
foreach (Employee e in members) {
TeamMembers.Add((Employee)e.Clone());
}
}
public void AddMember(Employee member) {
TeamMembers.Add(member);
}
public override string ToString() {
StringBuilder str = new StringBuilder();
foreach (Employee e in TeamMembers) {
str.AppendFormat(" {0}
", e);
}
return str.ToString();
}
public object Clone() {
return new Team(this.TeamMembers);
}
}
public class MainClass {
public static void Main() {
Team team = new Team();
team.AddMember(new Employee("F", "Developer", 34));
team.AddMember(new Employee("K", "Tester", 78));
team.AddMember(new Employee("C", "Support", 18));
Team clone = (Team)team.Clone();
Console.WriteLine(team);
Console.WriteLine(clone);
Console.WriteLine(Environment.NewLine);
team.TeamMembers[0].Name = "NewName";
team.TeamMembers[0].Title = "Manager";
team.TeamMembers[0].Age = 44;
Console.WriteLine(team);
Console.WriteLine(clone);
}
}
System.Array and the Collection Classes:ICloneable 2
using System;
class ContainedValue
{
public ContainedValue(int count)
{
this.count = count;
}
public int count;
}
class MyObject
{
public MyObject(int count)
{
this.contained = new ContainedValue(count);
}
public MyObject Clone()
{
return((MyObject) MemberwiseClone());
}
public ContainedValue contained;
}
public class SystemArrayandtheCollectionClassesICloneable2
{
public static void Main()
{
MyObject my = new MyObject(33);
MyObject myClone = my.Clone();
Console.WriteLine("Values: {0} {1}",my.contained.count, myClone.contained.count);
myClone.contained.count = 15;
Console.WriteLine("Values: {0} {1}", my.contained.count, myClone.contained.count);
}
}
System.Array and the Collection Classes:ICloneable 1
using System;
class ContainedValue
{
public ContainedValue(int count)
{
this.count = count;
}
public int count;
}
class MyObject: ICloneable
{
public MyObject(int count)
{
this.contained = new ContainedValue(count);
}
public object Clone()
{
Console.WriteLine("Clone");
return(new MyObject(this.contained.count));
}
public ContainedValue contained;
}
public class SystemArrayandtheCollectionClassesICloneable
{
public static void Main()
{
MyObject my = new MyObject(33);
MyObject myClone = (MyObject) my.Clone();
Console.WriteLine( "Values: {0} {1}",
my.contained.count,
myClone.contained.count);
myClone.contained.count = 15;
Console.WriteLine( "Values: {0} {1}",
my.contained.count,
myClone.contained.count);
}
}
Demonstrate ICloneable
/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Demonstrate ICloneable.
using System;
class X {
public int a;
public X(int x) { a = x; }
}
class Test : ICloneable {
public X o;
public int b;
public Test(int x, int y) {
o = new X(x);
b = y;
}
public void show(string name) {
Console.Write(name + " values are ");
Console.WriteLine("o.a: {0}, b: {1}", o.a, b);
}
// Make a deep copy of the invoking object.
public object Clone() {
Test temp = new Test(o.a, b);
return temp;
}
}
public class CloneDemo {
public static void Main() {
Test ob1 = new Test(10, 20);
ob1.show("ob1");
Console.WriteLine("Make ob2 a clone of ob1.");
Test ob2 = (Test) ob1.Clone();
ob2.show("ob2");
Console.WriteLine("Changing ob1.o.a to 99 and ob1.b to 88.");
ob1.o.a = 99;
ob1.b = 88;
ob1.show("ob1");
ob2.show("ob2");
}
}
Copy a class
/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Copy a class.
using System;
// Define a structure.
class MyClass {
public int x;
}
// Now show a class object assignment.
public class ClassAssignment {
public static void Main() {
MyClass a = new MyClass();
MyClass b = new MyClass();
a.x = 10;
b.x = 20;
Console.WriteLine("a.x {0}, b.x {1}", a.x, b.x);
a = b;
b.x = 30;
Console.WriteLine("a.x {0}, b.x {1}", a.x, b.x);
}
}