Get the number of elements contained in Collection in C#

To get the number of elements contained in Collection, the code is as follows −

Example

 Live Demo

using System;
using System.Collections.ObjectModel;
public class Demo {
   public static void Main() {
      Collection<string> col = new Collection<string>();
      col.Add("Andy");
      col.Add("Kevin");
      col.Add("John");
      col.Add("Kevin");
      col.Add("Mary");
      col.Add("Katie");
      col.Add("Barry");
      col.Add("Nathan");
      col.Add("Mark");
      Console.WriteLine("Count of elements = "+ col.Count);
      Console.WriteLine("Iterating through the collection...");
      var enumerator = col.GetEnumerator();
      while (enumerator.MoveNext()) {
         Console.WriteLine(enumerator.Current);
      }
   }
}

Output

This will produce the following output −

Count of elements = 9
Iterating through the collection...
Andy
Kevin
John
Kevin
Mary
Katie
Barry
Nathan
Mark

Example

Let us see another example −

 Live Demo

using System;
using System.Collections.ObjectModel;
public class Demo {
   public static void Main() {
      Collection<int> col = new Collection<int>();
      col.Add(10);
      col.Add(20);
      col.Add(30);
      col.Add(40);
      col.Add(50);
      col.Add(60);
      col.Add(70);
      col.Add(80);
      Console.WriteLine("Elements in the Collection...");
      foreach(int val in col) {
         Console.WriteLine(val);
      }
      Console.WriteLine("Does the collection has the element 70? = "+col.Contains(70));
      Console.WriteLine("Count of elements = " + col.Count);
      col.Clear();
      Console.WriteLine("Count of elements (updated) = " + col.Count);
   }
}

Output

This will produce the following output −

Elements in the Collection...
10
20
30
40
50
60
70
80
Does the collection has the element 70? = True
Count of elements = 8
Count of elements (updated) = 0

AmitDiwan

Published on 10-Dec-2019 06:58:42

• Related Questions & Answers
• Get the number of elements contained in SortedList in C#
• Get the number of elements contained in the Queue in C#
• Get the number of elements contained in the Stack in C#
• Get the number of elements actually contained in the ArrayList in C#
• Number of elements contained in the BitArray in C#?
• Get the number of nodes contained in LinkedList in C#
• Get the number of key/values pairs contained in OrderedDictionary in C#
• Get the number of key/value pairs contained in ListDictionary in C#
• Get the number of elements in the SortedSet in C#
• Get or set the number of elements in the BitArray in C#
• Get the count of the number of documents in a MongoDB Collection?
• Copy the elements of collection over a range of elements in ArrayList in C#
• Get a collection of keys in the StringDictionary in C#
• Get a collection of values in the StringDictionary in C#
• Get the number of elements of the Masked Array in Numpy