無法識別的數據庫格式

Question

我想從我的C＃應用​​程序的訪問數據庫中加載一些數據。但是當它嘗試與數據庫建立連接時，出現此錯誤：

Unrecognised database format

如何解決此問題？

這是我的代碼：

private void btnBrowseDB_Click(object sender, EventArgs e) 
{ 
    OpenFileDialog ofd = new OpenFileDialog(); 
    ofd.Title = "Kies een databank."; 
    ofd.Filter = "Microsoft Access Databank (*.accdb)|*.accdb"; 
    ofd.RestoreDirectory = true; 

    if (ofd.ShowDialog() == DialogResult.OK) 
    { 
     txtDBLocation.Text = ofd.FileName; 
     loadCampagnes(ofd.FileName); 
    } 
} 

private void loadCampagnes(string pathDB) 
{ 
    string connString = "Provider=Microsoft.Jet.OLEDB.4.0;" 
         + "User ID=;" 
         + "Password=;" 
         + "Data Source =" + pathDB + ";"; 
    try 
    { 
     OleDbConnection oleDbConn = new OleDbConnection(connString); 

     string strSQL = "SELECT id, naam " 
         + "FROM Marketingcampagne "; 

     OleDbCommand oleDbCmd = new OleDbCommand(strSQL, oleDbConn); 
     oleDbConn.Open(); 
     OleDbDataReader oleDbReader = oleDbCmd.ExecuteReader(); 

     while (oleDbReader.Read()) 
     { 
      string strCampagneNaam = ""; 
      int intValue; 

      int intField = oleDbReader.GetOrdinal("naam"); 
      if (!oleDbReader.IsDBNull(intField)) 
       strCampagneNaam = oleDbReader.GetString(intField); 

      intField = oleDbReader.GetOrdinal("id"); 
      if (!oleDbReader.IsDBNull(intField)) 
       intValue = oleDbReader.GetInt32(intField); 

      lbCampagnes.Items.Add(strCampagneNaam); 
     } 

     oleDbConn.Close(); 
    } 

    catch (OleDbException ex) 
    { 
     MessageBox.Show("Problemen bij het ophalen van de data (" + ex.Message + ")"); 
    } 

    catch (Exception ex) 
    { 
     MessageBox.Show("Onbekende fout (" + ex.Message + ")"); 
    } 
} 

文森特

PS。我使用Windows 7 64位，但我已將目標CPU更改爲x86。

Answer 1

對於ACCDB，您需要：

Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myAccess2007file.accdb;Persist Security Info=False; 

- http://www.connectionstrings.com/access-2007

Answer 2

Server svr = new Server(); 

res.Database = "SMO"; 
res.Action = RestoreActionType.Database; 
res.Devices.AddDevice(@"C:\SMOTest.bak", DeviceType.File); 
res.PercentCompleteNotification = 10; 
res.ReplaceDatabase = true; 
res.PercentComplete += new PercentCompleteEventHandler(ProgressEventHandler); 
res.SqlRestore(srv);