在C＃中使用Access數據庫更新語句錯誤/ OledB

Question

我試圖通過C＃使用OledB連接更新Access 2010數據庫上的數據/記錄，並試圖使一個能夠插入，更新，刪除數據的應用程序與數據庫。到目前爲止，我可以插入到數據庫中，並使用ComboBox來選擇一條記錄，但到目前爲止還沒有更新。

An unhandled exception of type 'System.Data.OleDb.OleDbException' occurred in ClassLibrary2.dll

Additional information: Syntax error in UPDATE statement.

注：

它與下面的錯誤出現了，我已經用方括號嘗試但沒有太大的變化，並與一個致命的錯誤，而不是

這裏上來是代碼：

using System; 
using System.Collections.Generic; 
using System.Data.OleDb; 
using System.Linq; 
using System.Text; 
using System.Threading.Tasks; 
using ClassLibrary; 
using System.Data; 

namespace ClassLibrary2 
{ 
    public class Class1 
    { 
     OleDbConnection connection; 
     OleDbCommand command; 

     private void ConnectTo() 
     { 
      connection = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:\CMS\CustomerDatabase.accdb;Persist Security Info=False"); 
      command = connection.CreateCommand(); 
     } 
     public Class1() 
     { 
      ConnectTo(); 
     } 

     public void Insert(Customer p) 
     { 
      try 
      { 
       command.CommandText = "INSERT INTO CustomerData ([Forename], [Surname], [Email Address], [Home Phone Number], [Mobile Phone Number], [Address], [AreaTown], [County], [Postcode]) VALUES('" + p.Forename1 + "', '" + p.Surname1 + "', '" + p.EAddress1 + "', '" + p.HomePhone1 + "' , '" + p.MobNum1 + "' , '" + p.Address1 + "', '" + p.AreaTown1 + "', '" + p.County1 + "', '" + p.Postcode1 + "')"; 
       command.CommandType = CommandType.Text; 
       connection.Open(); 

       command.ExecuteNonQuery(); 
      } 
      catch (Exception) 
      { 
       throw; 
      } 
      finally 
      { 
       if (connection != null) 
       { 
        connection.Close(); 
       } 
      } 
     } 

     public List<Customer> FillComboBox() 
     { 
      List<Customer> CustomersList = new List<Customer>(); 
      try 
      { 
       command.CommandText = "SELECT * FROM CustomerData"; 
       command.CommandType = CommandType.Text; 
       connection.Open(); 

       OleDbDataReader reader = command.ExecuteReader(); 

       while (reader.Read()) 
       { 
        Customer p = new Customer(); 

        p.Id = Convert.ToInt32(reader["ID"].ToString()); 
        p.Forename1 = reader["Forename"].ToString(); 
        p.Surname1 = reader["Surname"].ToString(); 
        p.EAddress1 = reader["Email Address"].ToString(); 
        p.HomePhone1 = reader["Home Phone Number"].ToString(); 
        p.MobNum1 = reader["Mobile Phone Number"].ToString(); 
        p.Address1 = reader["Address"].ToString(); 
        p.AreaTown1 = reader["AreaTown"].ToString(); 
        p.County1 = reader["County"].ToString(); 
        p.Postcode1 = reader["Postcode"].ToString(); 

        CustomersList.Add(p); 
       } 
       return CustomersList; 
      } 
      catch (Exception) 
      { 
       throw; 
      } 
      finally 
      { 
       if (connection != null) 
       { 
        connection.Close(); 
       } 
      } 
     } 

     public void Update(Customer oldCustomer, Customer newCustomer) 
     { 
      try 
      { 
       command.CommandText = "UPDATE CustomerData SET Forename= '" + newCustomer.Forename1 + "', Surname= '" + newCustomer.Surname1 + "', Email Address= '" + newCustomer.EAddress1 + "', Home Phone Number= '" + newCustomer.HomePhone1 + "', Mobile Phone Number= '" + newCustomer.MobNum1 + "', Address= '" + newCustomer.Address1 + "', AreaTown= '" + newCustomer.AreaTown1 + "', County= '" + newCustomer.County1 + "', Postcode= '" + newCustomer.Postcode1 + "' WHERE ID= ' + oldCustomer.Id'"; 
       command.CommandType = CommandType.Text; 
       connection.Open(); 

       command.ExecuteNonQuery(); 
      } 
      catch (Exception) 
      { 
       throw; 
      } 
      finally 
      { 
       if (connection != null) 
       { 
        connection.Close(); 
       } 
      } 
     } 
    } 
} 

很抱歉，如果代碼是有點長

我已經上LY剛開始使用C＃，可能需要多一點解釋

不要介意給予任何進一步的細節，以便隨意問

Answer 1

用空格包封物列名在其中用方括號，類似你是如何做到的在INSERT聲明中。

..., [Home Phone Number] = '" + newCustomer.HomePhone1 + "', ... 

此外，請查看參數化您的查詢。這更安全，更容易維護。

..., [Home Phone Number] = @HomePhoneNumber, ... 

command.Parameters.AddWithValue("@HomePhoneNumber", newCustomer.HomePhone1); 

避免列名中出現空格，你也可以。您可以輕鬆地使用下劃線，然後您不必記住在引用它們的任何地方都用括號括起來。