C#字符串运算符（Equality和Inequality）

C#中有两个字符串运算符：Equality和Inequality。

示例

让我们看一个Equality运算符的例子

using System; public class Demo { public static void Main() { string str1 = "Amit"; string str2 = " "; Console.WriteLine("Is string1 null or empty? = "+string.IsNullOrEmpty(str1)); Console.WriteLine("Is string2 null or empty? = "+string.IsNullOrEmpty(str2)); Console.WriteLine("Is string1 equal to str2? = "+str1 == str2); } }

输出结果

Is string1 null or empty? = False Is string2 null or empty? = False False

示例

现在让我们来看一个C#Inequality运算符的示例-using System; public class Demo { public static void Main() { string str1 = "abcdef"; string str2 = "abcdef"; Console.WriteLine("Is string1 null or empty? = "+string.IsNullOrEmpty(str1)); Console.WriteLine("Is string2 null or empty? = "+string.IsNullOrEmpty(str2)); bool val = str1 != str2; Console.WriteLine("Is str1 not equal to str2? = "+val); } }

输出结果

Is string1 null or empty? = False Is string2 null or empty? = False Is str1 not equal to str2? = False