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Using string with switch case statement in C#

C# string with switch case: Here, we are going to learn how to use string with the switch case statement in C#?
Submitted by IncludeHelp, on March 17, 2019

C# string with switch case statement

In C# programming language – we can use a string with the switch case statement, switch case statement is a type of selection control mechanism, which is used to execute a block from multiple blocks. Switch case multiple blocks and a variable/value, when value matches with the case, the body of the case associated with that case is executed.

Note: break must be used with all switch case blocks including default.

C# Example to use string with switch case statement

using System;
using System.Text;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            string gender = "Male";

            switch (gender)
            {
                case "Male":
                    Console.WriteLine("He is male...");
                    break;
                case "Female":
                    Console.WriteLine("She is female...");
                    break;
                default:
                    Console.WriteLine("Default");
                    break;
            }

            //hit ENTER to exit
            Console.ReadLine();
        }
    }
}

Output

He is male...

Example 2: Here, we will input a text from the console and check whether input text starts with either "This" or "That".

using System;
using System.Text;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            string text = "";
            
            Console.Write("Enter some text: ");
            text = Console.ReadLine();

            switch (text.Substring(0, 4))
            {
                case "This":
                    Console.WriteLine("text started with \"This\"");
                    break;
                case "That":
                    Console.WriteLine("text started with \"That\"");
                    break;
                default:
                    Console.WriteLine("Invalid text...");
                    break;
            }

            //hit ENTER to exit
            Console.ReadLine();
        }
    }
}

Output

First run:
Enter some text: This is a game.
text started with "This"

Second run:
Enter some text: That is a book.
text started with "That"

Third run:
Enter some text: These are cows.
Invalid text...

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