Csharp/CSharp Tutorial/Statement/Foreach

Search an array using foreach.

using System; 
 
class MainClass { 
  public static void Main() { 
    int[] nums = new int[10]; 
    int val; 
    bool found = false; 
 
    for(int i = 0; i < 10; i++)  
      nums[i] = i; 
 
    val = 5; 
 
    foreach(int x in nums) { 
      if(x == val) { 
        found = true; 
        break; 
      } 
    } 
 
    if(found)  
      Console.WriteLine("Value found!"); 
  } 
}

Value found!

Use foreach on a two-dimensional array.

using System; 
 
class MainClass { 
  public static void Main() { 
    int sum = 0; 
    int[,] nums = new int[3,5]; 
 
    for(int i = 0; i < 3; i++)  
      for(int j=0; j < 5; j++) 
        nums[i,j] = (i+1)*(j+1); 
 
    foreach(int x in nums) { 
      Console.WriteLine("Value is: " + x); 
      sum += x; 
    } 
    Console.WriteLine("Summation: " + sum); 
  } 
}

Value is: 1
Value is: 2
Value is: 3
Value is: 4
Value is: 5
Value is: 2
Value is: 4
Value is: 6
Value is: 8
Value is: 10
Value is: 3
Value is: 6
Value is: 9
Value is: 12
Value is: 15
Summation: 90

Use the foreach loop.

The foreach loop is used to cycle through the elements of a collection.

The general form of foreach is shown here:

foreach(type var-name in collection) 
       statement;