>Do you really need a copy. Can't you just create a new one with the copied DataTable ?

I found that the other issue I am having is that:

    ' Clone this object
    Public Function Clone() As Object Implements System.ICloneable.Clone
        Dim loData As Data = DirectCast(MemberwiseClone(), Data)

        ' Add to the cloning object the dataset as well
        ' MemberwiseClone only copies value types
        ' So just returning Return MyBase.MemberwiseClone() would not do if after the cloning the access to the original dataset is needed
        loData.oDataSet = loData.oDataSet.Copy()

        Return loData
    End Function

...this does not copy the dataset as is. It gives all kind of various errors as soon as I add that line. If I return before the dataset line, I do not have the error, but, of course, the dataset is not cloned and if the client class cloned object changes the dataset, then I have problems. This is why I need to find a proper way to clone the dataset as well. Would you know why that line you suggested does not provide the same image as the base object dataset?

>Because they found it started to get (too) complicated.

What we have now is a shallow copy. But, I see many are requesting the support of a deep copy. It wouldn't have to be the default. But, at least, the ability to pass a parameter to get a deep copy would be useful.