C#: Inheritance Problem with List

Question

Let\'s assume this class in C#:

public class LimitedList : List
{
    private int _maxitems = 500;

    public void Add(T value) /* Adding          


        

Answer 1

You need to declare your 'Add' method as a 'new' (replacement) method. Try this:

public class LimitedList : List
{
    private int _maxitems = 500;

    public new void Add(T value) /* Adding a new Value to the buffer */
    {
        base.Add(value);
        TrimData(); /* Delete old data if length too long */
    }

    private void TrimData()
    {
        int num = Math.Max(0, base.Count - _maxitems);
        base.RemoveRange(0, num);
    }
}

notice the 'new' keyword in the 'Add(...' declaration.

Although, in this instance, you should create your own generic class implementing the IList interface. Hope that helps.