C# Foreach Loop with Examples

In c#, the Foreach loop is useful to loop through each item in an array or collection object to execute the block of statements repeatedly.

Generally, in c# Foreach loop will work with the collection objects such as an array, list, etc., to execute the block of statements for each element in the array or collection.

After completing iterating through each element in the collection, control will be transferred to the next statement following the foreach block.

In c#, we can use a break, continue, goto and return statements within the foreach loop to exit or continue to the next iteration of the loop based on our requirements.

Syntax of C# Foreach Loop

Following is the syntax of defining the Foreach loop in the c# programming language.

foreach (Type var_name in Collection_Object) {

 // Statements to Execute

 }

If you observe the above syntax, we defined a foreach loop with the collection object and required variable names to access the collection object's elements.

Here, Type is a built-in data-type or custom class type, and var_name is a variable name to access elements from the collection object (Collection_Object) to use it in the foreach loop's body.

C# Foreach Loop Flow Chart

Following is the pictorial representation of the foreach loop process flow diagram in the c# programming language.

C# Foreach Loop Flow Chart Diagram

Now, we will see how to use the foreach loop in the c# programming language with examples.

C# Foreach Loop with Array Example

Following is the example of using a foreach loop in c# programming language to iterate or loop through array elements.

using System;

 namespace Tutlane
 {
     class Program
     {
         static void Main(string[] args)
         {
             string[] names = new string[3] { "Suresh Dasari", "Rohini Alavala", "Trishika Dasari" };
             foreach (string name in names)
             {
                 Console.WriteLine(name);
             }
             Console.WriteLine("Press Enter Key to Exit..");
             Console.ReadLine();
         }
     }
 }

If you observe the above example, we created a string array object “names” and looping through each element of array object using foreach loop and assigning array elements to string variable “name”.

To know more about arrays in the c# programming language, refer to c# arrays with examples.

When we execute the above c# program, we will get the result as shown below.

C# Foreach Loop with Arrays Example Result

If you observe the above result, we loop through each element of the array and print those values on the console window based on our requirements.

C# Foreach Loop with List Example

Like c# foreach with arrays, we can use the foreach loop with the list object to process each element in the list object, but inside the foreach loop, it won’t allow us to modify (add or delete) the list object items.

To learn more about lists in c# programming, refer to c# lists with examples.

Following is the example of using a foreach loop in c# programming language to iterate or loop through list elements.

using System;
 using System.Collections.Generic;

 namespace Tutlane
 {
    class Program
    {
        static void Main(string[] args)
        {
            List names = new List() { "Suresh Dasari", "Rohini Alavala", "Trishika Dasari" };
            foreach (string name in names)
            {
                Console.WriteLine(name);
            }
            Console.WriteLine("Press Enter Key to Exit..");
            Console.ReadLine();
        }
    }
 }

If you observe the above example, we used System.Collections.Generic namespace to access the List object and adding string elements to the list. We used foreach to loop through items in the list to print them on the console window.

Output of C# Foreach Loop with List Example