DataTable already belongs to another DataSet

Question

This error is occuring while adding one datatable from a dataset to another .\"DataTable already belongs to another DataSet.\"

dsformulaValues.Tables.Add(m_D         


        

Answer 1

Try to copy the table with DataTable.Copy() method in case it's not a typed DataSet. This method creates a new instance of the same table so it not gonna belong to any DataSet:

dim newTable as DataTable = oldTable.Copy() dim dv as DataView = newTable.DefaultView

dsformulaValues.Tables.Add(m_DataAccess.GetFormulaValues(dv.ToTable.DefaultView.ToTable(False, strSelectedCols)).Tables(0))