>There's another way - not that I'm sure it will solve the errors - you'll have to test it
>

>			DataSet ds1 = ds.DataSet;   // the original
>
>			DataSet ds2 = ds1.Clone(); // cloned
>
>			using (MemoryStream contents = new MemoryStream())
>			{
>				ds1.WriteXml(contents);  // save contents to a stream
>				contents.Position = 0;
>				ds2.ReadXml(contents);
>			}
>

Thanks, I tried that. But, it does not work. It is the same result. This does not create a copy.

    ' Clone this object
    Public Function Clone() As Object Implements System.ICloneable.Clone
        Dim loData As Data = DirectCast(MemberwiseClone(), Data)
        Dim loDataSet As DataSet = Nothing

        loDataSet = oDataSet.Clone

        Using loMemoryStream As System.IO.MemoryStream = New System.IO.MemoryStream
            oDataSet.WriteXml(loMemoryStream)
            loMemoryStream.Position = 0
            loDataSet.ReadXml(loMemoryStream)
        End Using

        loData.oDataSet = loDataSet

        Return loData
    End Function