Обновление данных в базе

Form3 f3 = new Form3();
            if (f3.ShowDialog() == DialogResult.OK)
            {
                FbCommand command = new FbCommand();
                command.Connection = vISITTableAdapter.Connection;
                command.Connection.Open();
                command.CommandText = "select next value for gen_visitors_id from rdb$database";
                FbCommandBuilder fbCommandBuilder = new FbCommandBuilder(vISITTableAdapter.Adapter);
                DataRow v2 = dataSet1.Tables["VISIT"].NewRow();
                v2["VISIT_ID"] = int.Parse(command.ExecuteScalar().ToString());
                v2["VISITORS_ID"] = f3.GetVis_id1();
                v2["DATE"] = f3.date;
                v2["START_TIME"] = f3.s_time;
                if (!string.IsNullOrEmpty(f3.e_time))
                    v2["END_TIME"] = f3.e_time;
                dataSet1.Tables["Visit"].Rows.Add(v2);
                vISITTableAdapter.Adapter.Update(dataSet1, "VISIT");
                this.vISITTableAdapter.Fill(this.dataSet1.VISIT);
                command.Connection.Close();
            }

DataRow modWork = ((DataRowView)vISITBindingSource.Current).Row;
            vis_id5 = (int)modWork["VISIT_ID"];
            vis_id6 = (int)modWork["VISITORS_ID"];
            t_date = (DateTime)modWork["DATE"];
            t_s_time = (TimeSpan)modWork["START_TIME"];
            Form10 f10 = new Form10();
            f10.textBox1.Text = vis_id6.ToString();
            f10.dateTimePicker1.Text = t_date.ToString();
            f10.textBox2.Text = t_s_time.ToString();
            if (f10.ShowDialog() == DialogResult.OK)
            {
                FbCommand command = new FbCommand();
                command.Connection = vISITTableAdapter.Connection;
                command.Connection.Open();
                command.CommandText = "select next value for gen_visitors_id from rdb$database";
                FbCommandBuilder fbCommandBuilder = new FbCommandBuilder(vISITTableAdapter.Adapter);
                DataRow uv2 = dataSet1.Tables["VISIT"].NewRow();
                uv2["VISIT_ID"] = vis_id4.ToString();
                uv2["VISITORS_ID"] = f10.GetVis_id7();
                uv2["DATE"] = f10.date;
                uv2["START_TIME"] = f10.s_time;
                if (!string.IsNullOrEmpty(f10.e_time))
                    uv2["END_TIME"] = f10.e_time;
                dataSet1.Tables["Visit"].Rows.Add(uv2);
                vISITTableAdapter.Adapter.Update(dataSet1, "VISIT");
                this.vISITTableAdapter.Fill(this.dataSet1.VISIT);
                command.Connection.Close();

vISITTableAdapter.Adapter.Update(dataSet1, "VISIT");