C#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
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