Dim ds2 As New DataSet
  
ds2.Tables.Add(MyBO.CurrentDataTable)

I use the above statements in conjunction with XrtraReports to print one of my reports. I run the same code again and MyBO.CurrentdataTable may be the same or it may be a different table (This depends on User Selection). If it is a different table the above code works again but if it is the same table I get an error stating the currenttable already belongs to the dataset. Is there some way around this?

I have tried using ds2=nothing but that does not help.

Is there a way to find out if ds2 exists? 

Is there a way to find out if MyBO.currentdatatable belongs to ds2?

Is there a way to remove all the tables in ds2?

I know I can use ds2.tables.remove(MyBo.CurrentDatatable).

Thanks in Advance.

ds2.Tables.Contains(MyBO.CurrentDataTable.TableName)

ds2.Tables.Clear()

If ds2 Is Nothing Then
 '-- ds doesn't exist, create it
End If