Why List(Of T) doesn't have Count()?

Question

Public Class MyList
    Inherits List(Of MyObject)

    Public ReadOnly Property SelectedCount() As Integer
        Get
            Return Me.Count(Function(obj) obj.IsS         


        

Answer 1

To answer #4, this works fine in C#:

public class MyObject { public bool IsSelected { get { return true; } } }

public class MyList : List
{
    public int SelectedCount
    {
        get { return this.Count(x => x.IsSelected); }
    }
}