C＃String.Equality運算符 (C# String.Equality operator )

"==" is a String.Equality operator in C#, it is used to check whether two strings objects have the same values or not.

“ ==”是C＃中的String.Equality運算符 ，用于檢查兩個字符串對象是否具有相同的值。

Syntax:

句法：

    public static bool operator == (string a, string b);

Parameter: It has two parameters both are strings to compare..

參數：它有兩個參數都是要比較的字符串。

Return value: bool – it returns a Boolean value. If strings have the same value, it returns true, else it returns false.

返回值： bool-返回布爾值。 如果字符串具有相同的值，則返回true ，否則返回false 。

Example:

例：

    Input:
string str1 = "IncludeHelp";
string str2 = "IncludeHelp";
String.Equality:
str1 == str2;
Output:
true

C＃使用String.Equality(==)運算符比較兩個字符串的示例 (C# Example to compare two strings using String.Equality (==) operator )

using System;
using System.Text;
namespace Test
{
class Program
{
static void Main(string[] args)
{
string str1 = "IncludeHelp";
string str2 = "IncludeHelp";
//comparing strings
Console.WriteLine("str1==str2: " + (str1 == str2));
if (str1 == str2)
Console.WriteLine("str1 and str2 have the same values");
else
Console.WriteLine("str1 and str2 don't have the same values");
str1 = "Hello world";
str2 = "IncludeHelp";
//comparing strings
Console.WriteLine("str1==str2: " + (str1 == str2));
if (str1 == str2)
Console.WriteLine("str1 and str2 have the same values");
else
Console.WriteLine("str1 and str2 don't have the same values");
//hit ENTER to exit
Console.ReadLine();
}
}
}

Output

輸出量

str1==str2: True
str1 and str2 have the same values
str1==str2: False
str1 and str2 don't have the same values

Reference: String.Equality(String, String) Operator

參考： String.Equality(String，String)運算符

翻譯自: https://www.includehelp.com/dot-net/string-equality-operator-with-example-in-c-sharp.aspx