本文整理汇总了C#中System.Object.Equals方法的典型用法代码示例。如果您正苦于以下问题：C# Object.Equals方法的具体用法？C# Object.Equals怎么用？C# Object.Equals使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了Object.Equals方法的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C#代码示例。
示例1: Point
//引入命名空间
using System;
class Point
{
protected int x, y;
public Point() : this(0, 0)
{ }
public Point(int x, int y)
{
this.x = x;
this.y = y;
}
public override bool Equals(Object obj)
{
//Check for null and compare run-time types.
if ((obj == null) || ! this.GetType().Equals(obj.GetType()))
{
return false;
}
else {
Point p = (Point) obj;
return (x == p.x) && (y == p.y);
}
}
public override int GetHashCode()
{
return (x << 2) ^ y;
}
public override string ToString()
{
return String.Format("Point({0}, {1})", x, y);
}
}
sealed class Point3D: Point
{
int z;
public Point3D(int x, int y, int z) : base(x, y)
{
this.z = z;
}
public override bool Equals(Object obj)
{
Point3D pt3 = obj as Point3D;
if (pt3 == null)
return false;
else
return base.Equals((Point)obj) && z == pt3.z;
}
public override int GetHashCode()
{
return (base.GetHashCode() << 2) ^ z;
}
public override String ToString()
{
return String.Format("Point({0}, {1}, {2})", x, y, z);
}
}
class Example
{
public static void Main()
{
Point point2D = new Point(5, 5);
Point3D point3Da = new Point3D(5, 5, 2);
Point3D point3Db = new Point3D(5, 5, 2);
Point3D point3Dc = new Point3D(5, 5, -1);
Console.WriteLine("{0} = {1}: {2}",
point2D, point3Da, point2D.Equals(point3Da));
Console.WriteLine("{0} = {1}: {2}",
point2D, point3Db, point2D.Equals(point3Db));
Console.WriteLine("{0} = {1}: {2}",
point3Da, point3Db, point3Da.Equals(point3Db));
Console.WriteLine("{0} = {1}: {2}",
point3Da, point3Dc, point3Da.Equals(point3Dc));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:88，代码来源:Object.Equals 输出：
Point(5, 5) = Point(5, 5, 2): False
Point(5, 5) = Point(5, 5, 2): False
Point(5, 5, 2) = Point(5, 5, 2): True
Point(5, 5, 2) = Point(5, 5, -1): False
示例2: Rectangle
//引入命名空间
using System;
class Rectangle
{
private Point a, b;
public Rectangle(int upLeftX, int upLeftY, int downRightX, int downRightY)
{
this.a = new Point(upLeftX, upLeftY);
this.b = new Point(downRightX, downRightY);
}
public override bool Equals(Object obj)
{
// Perform an equality check on two rectangles (Point object pairs).
if (obj == null || GetType() != obj.GetType())
return false;
Rectangle r = (Rectangle)obj;
return a.Equals(r.a) && b.Equals(r.b);
}
public override int GetHashCode()
{
return Tuple.Create(a, b).GetHashCode();
}
public override String ToString()
{
return String.Format("Rectangle({0}, {1}, {2}, {3})",
a.x, a.y, b.x, b.y);
}
}
class Point
{
internal int x;
internal int y;
public Point(int X, int Y)
{
this.x = X;
this.y = Y;
}
public override bool Equals (Object obj)
{
// Performs an equality check on two points (integer pairs).
if (obj == null || GetType() != obj.GetType()) return false;
Point p = (Point)obj;
return (x == p.x) && (y == p.y);
}
public override int GetHashCode()
{
return Tuple.Create(x, y).GetHashCode();
}
}
class Example
{
public static void Main()
{
Rectangle r1 = new Rectangle(0, 0, 100, 200);
Rectangle r2 = new Rectangle(0, 0, 100, 200);
Rectangle r3 = new Rectangle(0, 0, 150, 200);
Console.WriteLine("{0} = {1}: {2}", r1, r2, r1.Equals(r2));
Console.WriteLine("{0} = {1}: {2}", r1, r3, r1.Equals(r3));
Console.WriteLine("{0} = {1}: {2}", r2, r3, r2.Equals(r3));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:72，代码来源:Object.Equals 输出：
Rectangle(0, 0, 100, 200) = Rectangle(0, 0, 100, 200): True
Rectangle(0, 0, 100, 200) = Rectangle(0, 0, 150, 200): False
Rectangle(0, 0, 100, 200) = Rectangle(0, 0, 150, 200): False
示例3: Equals
//引入命名空间
using System;
public struct Complex
{
public double re, im;
public override bool Equals(Object obj)
{
return obj is Complex && this == (Complex)obj;
}
public override int GetHashCode()
{
return Tuple.Create(re, im).GetHashCode();
}
public static bool operator ==(Complex x, Complex y)
{
return x.re == y.re && x.im == y.im;
}
public static bool operator !=(Complex x, Complex y)
{
return !(x == y);
}
public override String ToString()
{
return String.Format("({0}, {1})", re, im);
}
}
class MyClass
{
public static void Main()
{
Complex cmplx1, cmplx2;
cmplx1.re = 4.0;
cmplx1.im = 1.0;
cmplx2.re = 2.0;
cmplx2.im = 1.0;
Console.WriteLine("{0} <> {1}: {2}", cmplx1, cmplx2, cmplx1 != cmplx2);
Console.WriteLine("{0} = {1}: {2}", cmplx1, cmplx2, cmplx1.Equals(cmplx2));
cmplx2.re = 4.0;
Console.WriteLine("{0} = {1}: {2}", cmplx1, cmplx2, cmplx1 == cmplx2);
Console.WriteLine("{0} = {1}: {2}", cmplx1, cmplx2, cmplx1.Equals(cmplx2));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:54，代码来源:Object.Equals 输出：
(4, 1) <> (2, 1): True
(4, 1) = (2, 1): False
(4, 1) = (4, 1): True
(4, 1) = (4, 1): True
示例4: Person
//引入命名空间
using System;
// Define a reference type that does not override Equals.
public class Person
{
private string personName;
public Person(string name)
{
this.personName = name;
}
public override string ToString()
{
return this.personName;
}
}
public class Example
{
public static void Main()
{
Person person1a = new Person("John");
Person person1b = person1a;
Person person2 = new Person(person1a.ToString());
Console.WriteLine("Calling Equals:");
Console.WriteLine("person1a and person1b: {0}", person1a.Equals(person1b));
Console.WriteLine("person1a and person2: {0}", person1a.Equals(person2));
Console.WriteLine("\nCasting to an Object and calling Equals:");
Console.WriteLine("person1a and person1b: {0}", ((object) person1a).Equals((object) person1b));
Console.WriteLine("person1a and person2: {0}", ((object) person1a).Equals((object) person2));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:36，代码来源:Object.Equals 输出：
person1a and person1b: True
person1a and person2: False
Casting to an Object and calling Equals:
person1a and person1b: True
person1a and person2: False
示例5:
byte value1 = 12;
int value2 = 12;
object object1 = value1;
object object2 = value2;
Console.WriteLine("{0} ({1}) = {2} ({3}): {4}",
object1, object1.GetType().Name,
object2, object2.GetType().Name,
object1.Equals(object2));
开发者ID:.NET开发者，项目名称:System，代码行数:10，代码来源:Object.Equals 输出：
12 (Byte) = 12 (Int32): False
示例6: Person
//引入命名空间
using System;
// Define a value type that does not override Equals.
public struct Person
{
private string personName;
public Person(string name)
{
this.personName = name;
}
public override string ToString()
{
return this.personName;
}
}
public struct Example
{
public static void Main()
{
Person person1 = new Person("John");
Person person2 = new Person("John");
Console.WriteLine("Calling Equals:");
Console.WriteLine(person1.Equals(person2));
Console.WriteLine("\nCasting to an Object and calling Equals:");
Console.WriteLine(((object) person1).Equals((object) person2));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:33，代码来源:Object.Equals 输出：
Calling Equals:
True
Casting to an Object and calling Equals:
True
示例7: Main
//引入命名空间
using System;
using System.Text;
public class Example
{
public static void Main()
{
StringBuilder sb1 = new StringBuilder("building a string...");
StringBuilder sb2 = new StringBuilder("building a string...");
Console.WriteLine("sb1.Equals(sb2): {0}", sb1.Equals(sb2));
Console.WriteLine("((Object) sb1).Equals(sb2): {0}",
((Object) sb1).Equals(sb2));
Console.WriteLine("Object.Equals(sb1, sb2): {0}",
Object.Equals(sb1, sb2));
Object sb3 = new StringBuilder("building a string...");
Console.WriteLine("\nsb3.Equals(sb2): {0}", sb3.Equals(sb2));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:21，代码来源:Object.Equals 输出：
sb1.Equals(sb2): True
((Object) sb1).Equals(sb2): False
Object.Equals(sb1, sb2): False
sb3.Equals(sb2): False
示例8: Person
public class Person
{
private string idNumber;
private string personName;
public Person(string name, string id)
{
this.personName = name;
this.idNumber = id;
}
public override bool Equals(Object obj)
{
Person personObj = obj as Person;
if (personObj == null)
return false;
else
return idNumber.Equals(personObj.idNumber);
}
public override int GetHashCode()
{
return this.idNumber.GetHashCode();
}
}
public class Example
{
public static void Main()
{
Person p1 = new Person("John", "63412895");
Person p2 = new Person("Jack", "63412895");
Console.WriteLine(p1.Equals(p2));
Console.WriteLine(Object.Equals(p1, p2));
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:36，代码来源:Object.Equals 输出：
True
True
示例9: Main
//引入命名空间
using System;
public class Example
{
public static void Main()
{
Dog m1 = new Dog("Alaskan Malamute");
Dog m2 = new Dog("Alaskan Malamute");
Dog g1 = new Dog("Great Pyrenees");
Dog g2 = g1;
Dog d1 = new Dog("Dalmation");
Dog n1 = null;
Dog n2 = null;
Console.WriteLine("null = null: {0}", Object.Equals(n1, n2));
Console.WriteLine("null Reference Equals null: {0}\n", Object.ReferenceEquals(n1, n2));
Console.WriteLine("{0} = {1}: {2}", g1, g2, Object.Equals(g1, g2));
Console.WriteLine("{0} Reference Equals {1}: {2}\n", g1, g2, Object.ReferenceEquals(g1, g2));
Console.WriteLine("{0} = {1}: {2}", m1, m2, Object.Equals(m1, m2));
Console.WriteLine("{0} Reference Equals {1}: {2}\n", m1, m2, Object.ReferenceEquals(m1, m2));
Console.WriteLine("{0} = {1}: {2}", m1, d1, Object.Equals(m1, d1));
Console.WriteLine("{0} Reference Equals {1}: {2}", m1, d1, Object.ReferenceEquals(m1, d1));
}
}
public class Dog
{
// Public field.
public string Breed;
// Class constructor.
public Dog(string dogBreed)
{
this.Breed = dogBreed;
}
public override bool Equals(Object obj)
{
if (obj == null || !(obj is Dog))
return false;
else
return this.Breed == ((Dog) obj).Breed;
}
public override int GetHashCode()
{
return this.Breed.GetHashCode();
}
public override string ToString()
{
return this.Breed;
}
}
开发者ID:.NET开发者，项目名称:System，代码行数:58，代码来源:Object.Equals 输出：
null = null: True
null Reference Equals null: True
Great Pyrenees = Great Pyrenees: True
Great Pyrenees Reference Equals Great Pyrenees: True
Alaskan Malamute = Alaskan Malamute: True
Alaskan Malamute Reference Equals Alaskan Malamute: False
Alaskan Malamute = Dalmation: False
Alaskan Malamute Reference Equals Dalmation: False
注：本文中的System.Object.Equals方法示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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