Ciri rentetan C#

Is string1 null or empty? = False Is string2 null or empty? = False Is str1 equal to str2? = True h is a letter 8 is a number b is a letter 9 is a number

using System; public class Demo { public static void Main() { string str1 = "hijklm"; string str2 = String.Empty; Console.WriteLine("Is string1 null or whitespace? = "+String.IsNullOrWhiteSpace(str1)); Console.WriteLine("Is string2 null or whitespace? = "+String.IsNullOrWhiteSpace(str2)); Console.WriteLine("String1 length = "+str1.Length); Console.WriteLine("String2 length = "+str1.Length); Console.WriteLine("String length = "+"demo".Length); } }

Is string1 null or whitespace? = False Is string2 null or whitespace? = True String1 length = 6 String2 length = 6 String length = 4