List class represents the list of objects which can be accessed by index. It comes under the System.Collection.Generic namespace. List class can be used to create a collection of different types like integers, strings etc. List class also provides the methods to search, sort, and manipulate lists. List.Count Property is used to get the total number of elements contained in the List.
- It is different from the arrays. A list can be resized dynamically but arrays cannot be.
- List class can accept null as a valid value for reference types and it also allows duplicate elements.
- If the Count becomes equals to Capacity then the capacity of the List increases automatically by reallocating the internal array. The existing elements will be copied to the new array before the addition of the new element.
Below programs illustrate the use of Count property:
- C# | Total number of elements present in an array
- Total number of elements in a specified dimension of an Array in C#
- C# | Removing all the elements from the List
- C# | Removing a range of elements from the List
- C# | Adding the elements of the specified collection to the end of the List
- C# | How to check whether a List contains the elements that match the specified conditions
- C# | How to insert the elements of a collection into the List at the specified index
- C# | How to get all elements of a List that match the conditions specified by the predicate
- C# | Reverse the order of the elements in the entire List or in the specified range
- C# | Remove all elements of a List that match the conditions defined by the predicate
- C# | Get the number of elements in the SortedSet
- C# | Get or set the number of elements in the BitArray
- C# | Number of elements in HashSet
- C# | Get or set the number of elements that the ArrayList can contain
- C# | Count the number of key/value pairs in the Hashtable
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