Question

我正在编程一个应在单击按钮后将DataGridView插入Oracle的应用程序。我怎么知道最后插入到Oracle中的行数。充其量应该出现一条消息。谢谢

private void button4_Click(object sender, EventArgs e)
    {

        try
        {

            for (int i = 0; i < dataGridViewDoubleBuffered1.Rows.Count - 1; i++) //Schleife für INSERT Befehl
            {

                OracleConnection con = new OracleConnection(XXXXXXX);
                con.Open();

                string sql = "INSERT INTO AFTERSALES.INPUT_BOARDLEVEL_REPAIR_LDS (BLR_REPORT_DATE, MONTH_OF_REPAIR_END, PCB_COUNTER) "
                           + "VALUES (:BLR_REPORT_DATE, :MONTH_OF_REPAIR_END, :PCB_COUNTER)";

                OracleCommand cmd = new OracleCommand(sql, con);
                cmd.CommandText = sql;
                cmd.Parameters.Add(":BLR_REPORT_DATE", Convert.ToString(dataGridViewDoubleBuffered1.Rows[i].Cells[0].Value));
                cmd.Parameters.Add(":MONTH_OF_REPAIR_END", dataGridViewDoubleBuffered1.Rows[i].Cells[1].Value);
                cmd.Parameters.Add(":PCB_COUNTER", dataGridViewDoubleBuffered1.Rows[i].Cells[2].Value);
                cmd.ExecuteNonQuery();
                con.Close();
            }

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }

    }

Answer 1

ExecuteNonQuery返回受影响的行数。

所以

var numRowsInserted = cmd.ExecuteNonQuery();

Answer 2

int recordsAffected = cmd.ExecuteNonQuery();

来自https://docs.microsoft.com/en-us/dotnet/api/system.data.oracleclient.oraclecommand.executenonquery?view=netframework-4.7.2：

返回Int32对于UPDATE，INSERT和DELETE语句，返回值是受命令影响的行数。

我怎么知道Datagridview上次向Oracle中插入了几行

2 个答案: