How do I create a custom collection in C#?

How do I create a custom collection in C#?

To create a custom collection in C#, you can implement the ICollection interface or inherit from Collection<T>. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

using System;
using System.Collections.Generic;

public class MyCustomCollection<T> : ICollection<T>
{
    private List<T> _items = new List<T>();

    public void Add(T item) => _items.Add(item);
    public void Clear() => _items.Clear();
    public bool Contains(T item) => _items.Contains(item);
    public void CopyTo(T[] array, int arrayIndex) => _items.CopyTo(array, arrayIndex);
    public int Count => _items.Count;
    public bool IsReadOnly => false;
    public bool Remove(T item) => _items.Remove(item);
    public IEnumerator<T> GetEnumerator() => _items.GetEnumerator();
    System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => _items.GetEnumerator();
}

This class implements basic collection functionality. Do you need more features?

What additional features can I add to this collection?

You can add features like indexing, sorting, or even implementing IEnumerable to allow LINQ queries. Would you like to see an example of any specific feature?