C＃OLEDB數據庫連接使用Access 2016

我一直在嘗試使用OLEDB和Access 2016不幸的是獲得一個數據庫連接然而，我還是不斷返回的錯誤：C＃OLEDB數據庫連接使用Access 2016

System.Data.OleDb.OleDbException was unhandled 
    ErrorCode=-2147467259 
    HResult=-2147467259 
    Message=Not a valid file name. 
    Source=Microsoft Office Access Database Engine 
    StackTrace: 
     at System.Data.OleDb.OleDbConnectionInternal..ctor(OleDbConnectionString constr, OleDbConnection connection) 
     at System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) 
     at System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) 
     at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) 
     at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) 
     at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 
     at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) 
     at System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) 
     at System.Data.OleDb.OleDbConnection.Open() 
     at Program_V1._0.Form1..ctor() in C:\Users\Tom\Documents\College\Computer_Science_Project _2017_Ver2.0\Program_Files\Program_V1.0\Program_V1.0\Form1.cs:line 24 
     at Program_V1._0.Program.Main() in C:\Users\Tom\Documents\College\Computer_Science_Project _2017_Ver2.0\Program_Files\Program_V1.0\Program_V1.0\Program.cs:line 19 
     at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) 
     at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) 
     at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() 
     at System.Threading.ThreadHelper.ThreadStart_Context(Object state) 
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
     at System.Threading.ThreadHelper.ThreadStart() 
    InnerException:

從這段代碼：

//Database Connection 
    OleDbConnection connection = new OleDbConnection(); 
    connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=‪C:\Users\Tom\Documents\College\Computer_Science_Project _2017_Ver2.0\Program_Files\Program_V1.0\Program_V1.0\Databases\DecodeTimes.accdb; 
    Persist Security Info=False;"; 
    connection.Open(); 
    label3.Text = " - Database Connected - "; 
    connection.Close();

試試看，即使在閱讀關於兼容性的問題後，我也無法看到任何問題，任何幫助將不勝感激。

來源

2017-08-03 Tom

我看起來像你可能有一個意外的空間在文件名。 –

@MattWarren不幸的是，我認爲文件名是完好的，因爲它是從文件屬性直接複製，將檢查，雖然，謝謝。 – Tom

縮短文件路徑並從簡單的文件路徑在本地測試它..文件名與空格需要引用周圍的行情 'Computer_Science_Project _2017_Ver2.0'應該是'Computer_Science_Project_2017_Ver2.0' – MethodMan

當我複製你的連接字符串，並將其粘貼到記事本+ +的「ANSI」編碼設置我看到

... Data Source=?C:\ ...

告訴我，你的連接字符串包含非ANSI字符。進一步調查表明，神祕字符（上面顯示爲?）實際上是不可見的Unicode字符U + 202A（左對右嵌入）。從連接字符串中刪除不可見的字符應該可以解決問題。

來源

2017-08-04 04:26:59

感謝您對此提供的幫助，現在問題已解決。這可能是一個愚蠢的問題，但這樣的角色怎麼可能進入這個字符串呢？再次感謝您的幫助。 – Tom

@Tom - 它經常發生作爲複製和粘貼操作的結果。 –

C＃OLEDB數據庫連接使用Access 2016

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