將記錄插入到Access數據庫中

Question

我很難將記錄插入到我的訪問數據庫中。我已經嘗試了訪問中的查詢，它插入正常。我也在查詢生成器中嘗試過查詢，但它也起作用，但是如果我運行此代碼，它聲稱已將該記錄插入到數據庫中，但是當我檢查數據庫時，沒有新記錄的跡象。

 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  (?, ?, ?, ?, ?, ?, ?, ?) 

非常感謝

Answer 1

您需要使用DB命令對象的連接相關聯：

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

編輯 - 這 可能 有做的參數排序，試試這個：

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 - 這是這方面的工作，而我瞭解到，你不能用ODBC和OLEDB命令使用命名參數，只有位置參數（請參見Table 6），並且此鏈接指出OleDbCommand對象僅在命令類型爲Text時才支持位置參數。位置參數依賴於順序。