我使用IVsFileChangeEvents和IVsFileChangeEx的组合来监控我的自定义编辑器扩展中编辑的文件是否在IDE外部进行了修改。但是，由于某些未知原因，我收到两次通知 - 从而导致要求用户重新加载两次。
FilesChanged的实现如下所示：
public int FilesChanged(uint cChanges, string[] rgpszFile, uint[] rggrfChange) {
foreach (var file in rgpszFile)
{
if (file.ToLowerInvariant() == documentPath.ToLowerInvariant()) {
System.Diagnostics.Debug.WriteLine("File changed - asking for reload");
if (MessageBox.Show("The file {0} was changed outside the editor. Do you want to reload it?".FillWith(file),
"MyEditor",
MessageBoxButton.YesNo,
MessageBoxImage.Question) == MessageBoxResult.Yes) {
fileChangeEx.IgnoreFile(fileCookie, null, 1);
// Unloading document
DoCloseDocument();
// Loading document
DoLoadDocument(file);
fileChangeEx.SyncFile(documentPath);
fileChangeEx.IgnoreFile(fileCookie, null, 0);
}
}
}
return VSConstants.S_OK;
}
我通过在Notepad ++中保存相同的文件来测试此代码。
这是来自SysInternals＆＃39;的日志。将procmon：
09:05:21,2272369 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:21,2273658 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:21,2275512 notepad++.exe 256 QueryDirectory D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Filter: settings.definition, 1: settings.definition
09:05:28,7692878 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:28,7694244 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:28,7696066 notepad++.exe 256 QueryDirectory D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Filter: settings.definition, 1: settings.definition
09:05:44,0463636 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:46,4087520 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:46,4088700 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:46,4089646 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 08:50:27, ChangeTime: 2014-05-23 08:50:27, AllocationSize: 4 096, EndOfFile: 1 740, FileAttributes: A
09:05:46,4090631 notepad++.exe 256 CreateFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Desired Access: Generic Write, Read Attributes, Dis, Options: Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, AllocationSize: 0, OpenResult: Overwritten
09:05:46,4100654 notepad++.exe 256 WriteFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Offset: 0, Length: 1 742, Priority: Normal
09:05:46,4101850 notepad++.exe 256 CloseFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS
09:05:46,4102751 devenv.exe 6884 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:05:46,4103088 MsMpEng.exe 956 CreateFileMapping D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition FILE LOCKED WITH WRITERS SyncType: SyncTypeCreateSection, PageProtection:
09:05:46,4103322 MsMpEng.exe 956 QueryStandardInformationFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS AllocationSize: 4 096, EndOfFile: 1 742, NumberOfLinks: 1, DeletePending: False, Directory: False
09:05:46,4144664 notepad++.exe 256 QueryDirectory D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Filter: settings.definition, 1: settings.definition
09:05:46,4160238 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:05:46,4172362 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:05:46,4173472 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:05:46,4175063 notepad++.exe 256 QueryDirectory D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Filter: settings.definition, 1: settings.definition
09:05:46,4178437 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:05:46,4185672 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:05:46,4186404 devenv.exe 6884 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:06:06,8788282 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:06:06,8789555 notepad++.exe 256 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:06:06,8791373 notepad++.exe 256 QueryDirectory D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Filter: settings.definition, 1: settings.definition
09:06:50,6465883 devenv.exe 6884 CreateFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Desired Access: Generic Read, Dis, Options: Synchronous IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened
09:06:50,6466482 devenv.exe 6884 QueryStandardInformationFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS AllocationSize: 4 096, EndOfFile: 1 742, NumberOfLinks: 1, DeletePending: False, Directory: False
09:06:50,6466665 devenv.exe 6884 ReadFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Offset: 0, Length: 1 742, Priority: Normal
09:06:50,6467374 devenv.exe 6884 ReadFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition END OF FILE Offset: 1 742, Length: 4 096
09:06:50,6469314 devenv.exe 6884 CloseFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS
09:06:50,6477175 devenv.exe 6884 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:06:50,6963339 devenv.exe 6884 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:07:02,3340501 devenv.exe 6884 CreateFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Desired Access: Generic Read, Dis, Options: Synchronous IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, AllocationSize: n/a, OpenResult: Opened
09:07:02,3341050 devenv.exe 6884 QueryStandardInformationFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS AllocationSize: 4 096, EndOfFile: 1 742, NumberOfLinks: 1, DeletePending: False, Directory: False
09:07:02,3341200 devenv.exe 6884 ReadFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS Offset: 0, Length: 1 742, Priority: Normal
09:07:02,3341887 devenv.exe 6884 ReadFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition END OF FILE Offset: 1 742, Length: 4 096
09:07:02,3343792 devenv.exe 6884 CloseFile D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS
09:07:02,3351733 devenv.exe 6884 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
09:07:02,3626280 devenv.exe 6884 QueryOpen D:\VS Projects\Temporary\WindowsFormsApplication1\WindowsFormsApplication1\NewFolder1\settings.definition SUCCESS CreationTime: 2014-05-21 13:08:34, LastAccessTime: 2014-05-21 13:08:34, LastWriteTime: 2014-05-23 09:05:46, ChangeTime: 2014-05-23 09:05:46, AllocationSize: 4 096, EndOfFile: 1 742, FileAttributes: A
似乎MessageBox.Show调用是第二次通知的主要原因。
调用堆栈如下所示：
MyAssembly.dll!MyClass.FilesChanged(uint cChanges = 1, string[] rgpszFile = {string[1]}, uint[] rggrfChange = {uint[1]}) Line 284 C#
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.FileChangeSubscription.Notify.AnonymousMethod__0() Unknown
Microsoft.VisualStudio.Shell.12.0.dll!Microsoft.VisualStudio.ErrorHandler.CallWithCOMConvention(System.Func<int> method, bool reportError = false, bool setShellErrorInfo = true) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.FileChangeSubscription.Notify(Microsoft.VisualStudio.Shell.Interop._VSFILECHANGEFLAGS changes) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.FileChangeSubscription.Notify(System.IO.WatcherChangeTypes changeTypes, Microsoft.VisualStudio.Services.FileProperties props) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.FileWatcher.Notify(Microsoft.VisualStudio.Services.ChangeStreamDigest digest) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.DirectoryWatcher.ProcessFileChanges(System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<string,Microsoft.VisualStudio.Services.ChangeStreamDigest>> digests, int depth) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.DirectoryWatcher.ProcessChanges(System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<string,Microsoft.VisualStudio.Services.ChangeStreamDigest>> digests = Count = 1, int depth = 3) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.DirectoryWatcher.ProcessChanges(System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<string,Microsoft.VisualStudio.Services.ChangeStreamDigest>> digests = Count = 1, int depth = 2) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.DirectoryWatcher.ProcessChanges(System.Collections.Generic.IEnumerable<System.Collections.Generic.KeyValuePair<string,Microsoft.VisualStudio.Services.ChangeStreamDigest>> digests = {Microsoft.Internal.VisualStudio.PlatformUI.HybridDictionary<string,Microsoft.VisualStudio.Services.ChangeStreamDigest>}, int depth = 1) Unknown
Microsoft.VisualStudio.Shell.UI.Internal.dll!Microsoft.VisualStudio.Services.DirectoryWatcher.OnChangedAsync() Unknown
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) Unknown
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate method, object args, int numArgs, System.Delegate catchHandler = null) Unknown
WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl() Unknown
WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(object state) Unknown
mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) Unknown
mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) Unknown
mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Unknown
WindowsBase.dll!System.Windows.Threading.DispatcherOperation.Invoke() Unknown
WindowsBase.dll!System.Windows.Threading.Dispatcher.ProcessQueue() Unknown
WindowsBase.dll!System.Windows.Threading.Dispatcher.WndProcHook(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) Unknown
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd = 264738, int msg = 49778, System.IntPtr wParam = 0, System.IntPtr lParam = 0, ref bool handled = false) Unknown
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) Unknown
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) Unknown
WindowsBase.dll!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate method, object args, int numArgs, System.Delegate catchHandler = null) Unknown
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs) Unknown
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd = 264738, int msg = 49778, System.IntPtr wParam = 0, System.IntPtr lParam = 0) Unknown
[Native to Managed Transition]
[Managed to Native Transition]
PresentationFramework.dll!System.Windows.MessageBox.ShowCore(System.IntPtr owner, string messageBoxText, string caption, System.Windows.MessageBoxButton button, System.Windows.MessageBoxImage icon, System.Windows.MessageBoxResult defaultResult, System.Windows.MessageBoxOptions options) Unknown
PresentationFramework.dll!System.Windows.MessageBox.Show(string messageBoxText, string caption, System.Windows.MessageBoxButton button, System.Windows.MessageBoxImage icon) Unknown
MyAssembly.dll!MyClass.FilesChanged(uint cChanges = 1, string[] rgpszFile = {string[1]}, uint[] rggrfChange = {uint[1]}) Line 290 C#
我应该怎样做只接收一次活动？
答案 0 :(得分：1)
我通过分离方法中的通知并在最后重新附加它来实现它。
看起来像这样（请注意，我省略了有关serviceProvider，fileChangeCookie，filesChanged - 数组，...）的一些详细信息。
int IVsFileChangeEvents.FilesChanged(uint numberOfFilesChanged, string[] filesChanged, uint[] flags)
{
IVsFileChangeEx fileChangeService = yourServiceProvider.GetService(typeof(SVsFileChangeEx));
// Detach from notifications
fileChangeService.UnadviseFileChange(GetCookieFromFile(filesChanged[0]));
// Do your stuff with the file
...
// Re-attach to notifications
fileChangeService.AdviseFileChange(filesChanged[0], (uint)(_VSFILECHANGEFLAGS.VSFILECHG_Time | _VSFILECHANGEFLAGS.VSFILECHG_Del), this, out fileChangeCookie);
}
答案 1 :(得分：1)
我在Win32级文件更改事件方面遇到了类似的问题。您可以做很多事情来减少问题（比如断开事件）。实际上，您不知道文件可以获得多少次更改＆＃34;在处理事件期间。对于基于消息的事件，只需要调用处理消息以重新输入的任何内容，对于多线程事件，您甚至不必调用某些内容 - 无论您做什么，都可能发生这种情况。因此，在收到通知时，您应该非常小心。理想情况下，您的事件处理程序应该以一种方式编写，即它可以在处理上一个事件时再次调用它。根据对话框和后续处理的作用，您可以只跟踪它是否打开和/或处理并忽略任何并发事件，或者您可能需要通知对话框或处理代码另一个更改有发生了。断开和重新连接通知适用于基于消息的事件，但如果有任何线程正在进行则不行。
答案 2 :(得分：0)
通过显示消息框，您可以有效地创建新的消息循环，从而允许潜在的重入。这与FilesChanged事件从VS的角度来看还没有完成运行这一事实（你尚未从函数中返回）可能会导致奇怪的行为。
立即在您的处理程序中返回。使用ThreadHelper.Generic.BeginInvoke对MessageBox和文档重新加载进行排队。