Object类的用法（二）

using System;
using System.Collections.Generic;
using System.Text;
namespace Object.Equals_方法
{
class Program
{
static void Main(string[] args)
{
//public override bool Equals (
//Object obj
//)
//如果 obj 是 Int32 的实例并且等于此实例的值，则为 true；否则为 false。
Int32 myVariable1 = 60;
Int32 myVariable2 = 60;
//Int16 myVariable2 = 60;//此时打印和上面一样
//Int64 myVariable2 = 60;//此时不一样
// Get and display the declaring type.
Console.WriteLine("\nType of 'myVariable1' is '{0}' and" +
" value is :{1}", myVariable1.GetType(), myVariable1);
Console.WriteLine("Type of 'myVariable2' is '{0}' and" +
" value is :{1}", myVariable2.GetType(), myVariable2);
// Compare 'myVariable1' instance with 'myVariable2' Object.
if (myVariable1.Equals(myVariable2))
Console.WriteLine("\nStructures 'myVariable1' and " +
"'myVariable2' are equal");
else
Console.WriteLine("\nStructures 'myVariable1' and " +
"'myVariable2' are not equal");

if(object.Equals(myVariable1,myVariable2))
Console.WriteLine("\nStructures 'myVariable1' and " +
"'myVariable2' are equal");
else
Console.WriteLine("\nStructures 'myVariable1' and " +
"'myVariable2' are not equal");
Console.WriteLine(myVariable1 == myVariable2);//但自定义的结构类型，不能用==进行比较，而自定义的类可以用==进行比较

if(ReferenceEquals(myVariable1,myVariable1))
Console.WriteLine("\nStructures 'myVariable1' and " +
"'myVariable2' are equal");
else
Console.WriteLine("\nStructures 'myVariable1' and " +
"'myVariable2' are not equal");

Console.ReadKey();
}
}
}