if (Object.ReferenceEquals(str1,str2))

曾经终败给现在 2022-07-16 12:11 133阅读 0赞

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Text;

namespace ConsoleApplication9  
\{  
    class Program  
    \{  
        static void Main(string\[\] args)  
        \{  
            Program a = new Program();  
            Program b = new Program();  
            if (a.Equals(b))  
            \{  
                Console.WriteLine("a=b");  
            \}  
            Console.WriteLine("a:\{0\}", a.GetHashCode());  
            Console.WriteLine("b:\{0\}", b.GetHashCode());  
            Program c = a;  
            if (a.Equals(c))  
            \{  
                Console.WriteLine("a=c");  
            \}  
            String str1 = new String("Hello".ToCharArray());  
            String str2 = new String("Hello".ToCharArray());  
            if (str1.Equals(str2))  
            \{  
                Console.WriteLine("str1=str2");  
            \}  
            if (str1==str2)  
            \{  
                Console.WriteLine("str1=str2");  
            \}  
            Console.WriteLine("str1:\{0\}", str1.GetHashCode());  
            Console.WriteLine("str2:\{0\}", str2.GetHashCode());  
            if (Object.ReferenceEquals(str1,str2))  
            \{  
                Console.WriteLine("Object.ReferenceEquals(str1,str2)");  
            \}  
            else  
            \{  
                Console.WriteLine("Object.Reference not Equals(str1,str2)");  
            \}

\}  
    \}  
\}  
/\*  
a:46104728  
b:12289376  
a=c  
str1=str2  
str1=str2  
str1:-694847  
str2:-694847  
Object.Reference not Equals(str1,str2)  
请按任意键继续. . .  
 \*/