将记录插入 Access 数据库

Question

我在向我的 access 数据库中插入记录时遇到了很大的困难。我已经在访问中尝试了查询，它插入得很好。我还尝试了查询生成器中的查询，它也可以工作，但是如果我运行此代码，它声称已将记录插入数据库，但是当我检查数据库时没有新记录的迹象。

      oleDbCommandCreateAppointment.Parameters["appointmentDate"].Value = "06/04/2012";
        oleDbCommandCreateAppointment.Parameters["timeSlotID"].Value ="21";
        oleDbCommandCreateAppointment.Parameters["startTime"].Value = "09:00";
        oleDbCommandCreateAppointment.Parameters["employeeID"].Value ="1";
        oleDbCommandCreateAppointment.Parameters["clientID"].Value ="1";
        oleDbCommandCreateAppointment.Parameters["assistantID"].Value ="1";
        oleDbCommandCreateAppointment.Parameters["appointmentType"].Value = "Quote";
        oleDbCommandCreateAppointment.Parameters["appointmentFlag"].Value = "Booked";

        try
        {
            oleDbConnection.Open();
            int rows = oleDbCommandCreateAppointment.ExecuteNonQuery();

            MessageBox.Show("Rows inserted " + rows.ToString());

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
        finally
        {
            oleDbConnection.Close();
        }

SQL 命令

INSERT INTO tblAppointments
                     (appointmentDate, timeSlotID, startTime, employeeID, clientID, assistantID, appointmentType, appointmentFlag)
  VALUES        (?, ?, ?, ?, ?, ?, ?, ?)

非常感谢

Answer 1

需要将连接关联到db​​命令对象：

oleDbConnection.Open();
oleDbCommandCreateAppointment.Connection = oleDbConnection;
int rows = oleDbCommandCreateAppointment.ExecuteNonQuery();

编辑 - 这 可能有 与参数排序有关，试试这个：

oleDbCommandCreateAppointment.Parameters[0].Value = "06/04/2012";
oleDbCommandCreateAppointment.Parameters[1].Value = "21";
oleDbCommandCreateAppointment.Parameters[2].Value = "09:00";
oleDbCommandCreateAppointment.Parameters[3].Value = "1";
oleDbCommandCreateAppointment.Parameters[4].Value = "1";
oleDbCommandCreateAppointment.Parameters[5].Value = "1";
oleDbCommandCreateAppointment.Parameters[6].Value = "Quote";
oleDbCommandCreateAppointment.Parameters[7].Value = "Booked";

注意 - 我在处理这个问题时学到了一些东西，您不能将命名参数与 ODBC 和 OleDB 命令一起使用，只能使用位置参数（请参阅 Table 6），并且此链接指出 OleDbCommand 对象仅支持位置参数当命令类型为Text 时。位置参数取决于顺序。