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

Like the other responses point out, the error you're seeing is because the DataTable you're attempting to add to a DataSet is already a part of a different DataSet.

One solution is to Copy the DataTable and assign the copy to the other DataSet.

dtCopy = dataTable.Copy()
ds.Tables.Add(dtCopy)

The copied DataTable will have the structure and data of the copied DataTable.

If you only want the structure of the DataTable, call Clone instead.

dtCopy = dataTable.Clone()