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

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北荒
北荒 2021-02-15 22:11
Public Class MyList
    Inherits List(Of MyObject)

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


        
4条回答
  •  难免孤独
    2021-02-15 22:33

    Use AsEnumerable for this purpose:

    Public ReadOnly Property SelectedCount() As Integer
        Get
            Return Me.AsEnumerable.Count(Function(obj) obj.IsSelected)
        End Get
    End Property
    

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