I would like to append one DataTable to another DataTable. I see the DataTable class has two methods; \"Load(IDataReader)\" and \"Merge(DataTable)\". From the documentation
use loop
for (int i = 0; i < dt1.Rows.Count; i++) { dt2.Rows.Add(dt1.Rows[i][0], dt1.Rows[i][1], ...);//you have to insert all Columns... }