plz help! how to update rows in dataset

[crisjala]

i want to update rows and make changes to database but i've got this error

error:Error 1 No overload for method 'Update' takes '2' arguments

 rowIndex = serviceLogDataGridView.CurrentCellAddress.Y;

                    dsJPS.Tables["ServiceLog"].Rows[rowIndex]["Date_Serve"] = dateTimePicker1.Value;
                    dsJPS.Tables["ServiceLog"].Rows[rowIndex]["tech_Assigned"] = comboBox1.SelectedValue.ToString();
                    this.serviceLogBindingSource.EndEdit();
                    this.serviceLogTableAdapter.Update(newSet, "ServiceLog");