>Ok, here's my findings.
>
>I created a temp version of Tables:
>
>

>    Public Class TablesTemp
>        Inherits System.Collections.Specialized.NameObjectCollectionBase
>
>        Public Overloads Sub Add(ByVal Table As Table)
>            BaseAdd(Table.Name, Table)
>        End Sub
>
>        Default Public Overloads ReadOnly Property Item(ByVal Title As String) As Table
>            Get
>                Return CType(BaseGet(Title), Table)
>            End Get
>        End Property
>
>        Default Public Overloads ReadOnly Property Item(ByVal Index As Integer) As Table
>            Get
>                Return CType(BaseGet(Index), Table)
>            End Get
>        End Property
>
>        ' Removes an entry with the specified key from the collection
>        Public Sub Remove(ByVal tcKey As String)
>            BaseRemove(tcKey)
>        End Sub
>
>        ' Removes an entry in the specified index from the collection
>        Public Sub Remove(ByVal tnIndex As Integer)
>            BaseRemoveAt(tnIndex)
>        End Sub
>
>        ' Removes everything
>        Public Sub Clear()
>            BaseClear()
>        End Sub
>
>    End Class
>

>
>Then, I tried:
>
>

>oApp.Tables = oApp.TablesTemp
>

>
>This does not work as the designer is complaining:
>
>"Value of type 'Framework.Framework.TablesTemp' cannot be converted to 'Framework.Framework.Tables'. "
>
>So, I thought we are not able to assign a NameObjectCollectionBase object as is to another one. So, I implemented a cloneable interface to TablesTemp. I got:
>
>"Unable to cast object of type 'Framework.Framework.TablesTemp' to type 'Framework.Framework.Tables'."
>
>So, is this normal we cannot assign a NameObjectCollectionBase object to another one?


I said to use a tmp variable - not a tmp class

You instantiate a new Tables(), popuplate it, then assign it to App.oApp.Tables

Before assigning the new instance - everyone will access the 'older' version. After assigning it, every one will acces the newer version