C# foreach loop

In this chapter you will learn:

• What is foreach loop in C#?
• How does it work?
• How to use foreach loop in C# programming?

foreach loop is a different kind of looping constructs in C# programming that doesn’t includes initialization, termination and increment/decrement characteristics. It uses collection to take value one by one and then processes them.

syntax:

foreach (string name in arr)
 {

 }

Where, name is a string variable that takes value from collection as arr and then processes them in the body area.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace foreach_loop
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] arr = new string[5]; // declaring array

            //Storing value in array element
            arr[0] = "Steven";
            arr[1] = "Clark";
            arr[2] = "Mark";
            arr[3] = "Thompson";
            arr[4] = "John";

            //retrieving value using foreach loop
            foreach (string name in arr)
            {
                Console.WriteLine("Hello " + name);
            }
            Console.ReadLine();
        }
    }
}

Output

Hello Steven

Hello Clark

Hello Mark

Hello Thompson

Hello John

__

Summary

In this chapter you learned what foreach loop is and how to use it in C# programming. You also learned how to use foreach loop to access value from collection as array. In next chapter you will get some programming examples of loop constructs in C sharp.