新增DataTable并赋值

 var money = ds.AsEnumerable().GroupBy(g => g["SupplierCode"]).Select(s => s.Sum(t => (decimal)t["Money"])).ToList();
                    DataTable dt = new DataTable();
                    dt.Columns.Add(new DataColumn { ColumnName = "a", DataType = Type.GetType("System.String") });
                    dt.Columns.Add(new DataColumn { ColumnName = "b", DataType = Type.GetType("System.String") });
                    dt.Columns.Add(new DataColumn { ColumnName = "c", DataType = Type.GetType("System.DateTime") });
                    dt.Columns.Add(new DataColumn { ColumnName = "d", DataType = Type.GetType("System.DateTime") });
                    dt.Columns.Add(new DataColumn { ColumnName = "e", DataType = Type.GetType("System.Decimal") });
                    dt.Columns.Add(new DataColumn { ColumnName = "f", DataType = Type.GetType("System.String") });
                    DataRow dr = dt.NewRow();
                    dr["a"] = "1";
                    dr["b"] = 2;//ddlDept.SelectedText;
                    dr["c"] = 3;
                    dr["d"] = 4;
                    dr["e"] = 5;
                    dr["f"] =6;
                    dt.Rows.Add(dr);