This tutorial will teach us how to compare strings in c# with an example.

Comparing strings using C#

There are many types of string comparison methods which are discussed below.
Remember that the choice of comparison method depends on your specific requirements, such as case sensitivity, culture, and sorting rules.

using string.Equals()

The code snippet you provided demonstrates a case-insensitive ordinal comparison method in C#.

                   Main method:

• • • We declared a boolean variable IsEqual.
    • We used the string.Equals method to compare the two strings: "TEMPLATE" and "template".
    • StringComparison.OrdinalIgnoreCase specifies that the comparison should be case-insensitive.
    • The result of the comparison is stored in IsEqual.
    • Finally, we print the value of IsEqual to the console.

      using System;
      
      namespace compare_string
      {
          internal static class Program
          {
              static void Main(string[] args)
              {
                  var IsEqual = string.Equals("TEMPLATE", "template", StringComparison.OrdinalIgnoreCase);
                  Console.WriteLine(IsEqual);
                  Console.ReadLine();
              }
          }
      }

      Output:

    • When you run this program, it will display True because the comparison between “TEMPLATE” and “template” ignores the case. In summary, this code snippet compares two strings while ignoring their case using the string. Equals method with the StringComparison.OrdinalIgnoreCase option. It’s a concise way to check if two strings are equal regardless of letter casing.

using (==) operator

• The equality operators == and != can be used to compare strings.
• They perform a case-sensitive, ordinal comparison by default.Main method:
  
  
• You’ve declared two string variables: name1 and name2.
• name1 is assigned the value "Kuheli", and name2 is assigned the value "kuheli".
• The line bool areEqual = name1 == name2; compares the values of name1 and name2.
• The equality operator (==) checks if the strings are identical (i.e., have the same characters in the same order).
• Since the comparison is case-sensitive, the result will be false because "Kuheli" and "kuheli" differ in capitalization.

  using System;
  
  namespace compare_str
  {
      class Program
      {
          static void Main(string[]args)
          {
              string name1 = "Kuheli";
              string name2 = "kuheli";
              bool Equal = name1 == name2;
              Console.WriteLine($"The names are equal? {Equal}");
              Console.ReadKey();
          }
      }
  }

  Output:
  The code compares the strings "Kuheli" and "kuheli" using the equality operator and prints whether they are equal or not. Since the comparison is case-sensitive, the output will be “The names are equal? False.”