我们在虚拟机上运行 Windows 8 64 位和 MS Office 2013 64 位。当我尝试使用查询字符串中的参数查询访问数据库时出现此错误。堆栈跟踪是:
at System.Data.Common.UnsafeNativeMethods.ICommandText.Execute(IntPtr pUnkOuter, Guid& riid, tagDBPARAMS pDBParams, IntPtr& pcRowsAffected, Object& ppRowset)
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult)
at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult)
at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method)
at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior)
at _64AccessTest.MainWindow.Button_Click_1(Object sender, RoutedEventArgs e) in c:\Users\xiaosu\Documents\Visual Studio 2012\Projects\64AccessTest\64AccessTest\MainWindow.xaml.cs:line 110
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.Controls.Button.OnClick()
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run()
at _64AccessTest.App.Main() in c:\Users\xiaosu\Documents\Visual Studio 2012\Projects\64AccessTest\64AccessTest\obj\Debug\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
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()
我有以下代码:
var connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\temp\templates\64Access.accdb;Persist Security Info=False;";
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
const String query = "PARAMETERS @Id LONG; select * from Subject where Id = @Id";
OleDbCommand _command = new OleDbCommand(query, connection);
_command.Parameters.Add("@Id", OleDbType.Integer);
_command.Parameters["@Id"].Value = 1;
using (OleDbDataReader reader = _command.ExecuteReader()){
......
}
}
异常发生在这一行: using (OleDbDataReader reader = _command.ExecuteReader()
我们正在使用 Visual Studio 2012 运行 .NET 4,这是一个 WPF 应用程序。
有线的事情是,如果我不将参数传递给 sql 查询,它工作正常。一旦查询有一些参数,就会发生错误。
在 Visual Studio 中,平台设置为我们想要的 AnyCPU。我们不想将其更改为 x86。
谢谢您的帮助。