List<T>.Exists(Predicate<T>) Method is used to check whether the List<T> contains elements which match the conditions defined by the specified predicate.
Properties of List:
- It is different from the arrays. A list can be resized dynamically but arrays cannot.
- 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.
public bool Exists (Predicate<T> match);
match: It is the Predicate<T> delegate which defines the conditions of the elements to search for.
Return Value: This method returns True if the List<T> contains one or more elements that match the conditions defined by the specified predicate otherwise it returns False.
Exception: This method will give ArgumentNullException if the match is null.
Below programs illustrate the use List<T>.Exists(Predicate<T>) Method:
Elements Present in List: 1 2 3 4 5 6 7 8 9 10 Result: True
Elements Present in List: 5 7 9 11 3 17 19 Result: False
- C# | How to get all elements of a List that match the conditions specified by the predicate
- C# | Check if an array contain the elements that match the specified conditions
- C# | Remove all elements of a List that match the conditions defined by the predicate
- C# | How to get the last occurrence of the element in the List that match the specified conditions
- C# | Check if every List element matches the predicate conditions
- C# | First occurrence in the List that matches the specified conditions
- C# | Remove elements from a SortedSet that match the predicate
- C# | Remove elements from a HashSet with conditions defined by the predicate
- 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 insert the elements of a collection into the List at the specified index
- C# | Count the total number of elements in the List
- C# | How to check whether a List contains a specified element
- C# | Reverse the order of the elements in the entire List or in the specified range
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.