how to count up list of items on c# code example

Example 1: c sharp list length

// To get the length of a List use 'List<T>.Count'
List<string> stringList = new List<string>{"string1", "string2"};
stringList.Count
// Output:
// 2

Example 2: c# count element in an array

string[] empty = new string[5];
var totalElements = empty.Count(); //5

string[] animals = { "Cat", "Alligator", "fox", "donkey", "Cat", "alligator" };
totalElements = animals.Count(); //6

int[] nums = { 1, 2, 3, 4, 3, 55, 23, 2, 5, 6, 2, 2 };
totalElements = nums.Count(); //12

Example 3: c# count items in listbox

listBox1.Items.Count

Example 4: get count of specific objects in list c#

var myList = new List<int>()
{
  0, 1, 2, 1, 5, 4, 8, 5, 2, 7, 1, 9
};

int count = 0;
foreach (var number in list)
{
  if (number == 2)
    count++;
}

Console.WriteLine("Number of 2s in list is: " + count);
// Output:
// Number of 2s in list is: 2