I have an existing project that is using data sets as a storing mechanism.
I want to migrate to Entity Framework 4.1 Code First.
My classes contain strongly typed collection classes, like this:
Public Class Calculations
Inherits CollectionBase
Public Event CalculationAdded(ByVal Calculation As Calculation)
#Region "Strongly Typed Collection Methods"
Default Public Overloads Property Item(ByVal index As Integer) As Calculation
Get
Return CType(Me.List.Item(index), Calculation)
End Get
Set(ByVal value As Calculation)
Me.List.Item(index) = value
End Set
End Property
Public Function Add(ByVal value As Calculation) As Integer
RaiseEvent CalculationAdded(value)
Return Me.List.Add(value)
End Function
Public Overloads Function Contains(ByVal obj As Calculation) As Boolean
Return Me.List.Contains(obj)
End Function
Public Overloads Function IndexOf(ByVal obj As Calculation) As Integer
Return Me.List.IndexOf(obj)
End Function
Public Overloads Sub Remove(ByVal obj As Calculation)
Me.RemoveAt(IndexOf(obj))
End Sub
Public Overloads Sub Sort()
Me.InnerList.Sort()
End Sub
#End Region
End Class
In the code examples of code first, everyone uses List(Of T) to store a collection of some type. But that way, I can't implement events, I think.
I Googled a lot, but it doesn't get me anywhere. Any advise would be helpful.
Can I use List(Of T) and still be able to fire events when an item is added to the collection?