如何理解system的根本原因。

Question

我正在处理一个非常复杂的环境：

有两个主要可执行文件：＆lt; application_server＆gt; .exe and ＆lt; application＆gt; .desktop.exe，服务器应用程序客户端应用程序。这两个应用程序均不修改。

为了添加功能，可以在服务器和客户端运行时目录的模块子目录中添加dll文件。

上周，我启动了一个客户端应用程序，现在这似乎不再起作用了。这将是由于缺乏telerik.openaccess.35.extensions.dll，但这是没有意义的：上周我也没有在运行时目录中没有该文件，而且一切都在工作美好的。

您能找出我应该寻找的地方，以了解为什么我的应用程序现在要求该telerik相关文件？

这是我的nlog基于基于的输出文件：

2022-06-13 09:13:22.0707 | Application_Client.Desktop.App | Uncaught exception in MainWindow. --- System.IO.FileNotFoundException: Could not load file or assembly 'Telerik.OpenAccess.35.Extensions, Version=2016.2.822.1, Culture=neutral, PublicKeyToken=7ce17eeaf1d59342' or one of its dependencies. The system cannot find the file specified.
File name: 'Telerik.OpenAccess.35.Extensions, Version=2016.2.822.1, Culture=neutral, PublicKeyToken=7ce17eeaf1d59342' ---> System.IO.FileNotFoundException: Could not load file or assembly 'Telerik.OpenAccess.35.Extensions, Version=2016.2.822.1, Culture=neutral, PublicKeyToken=7ce17eeaf1d59342' or one of its dependencies. The system cannot find the file specified.
File name: 'Telerik.OpenAccess.35.Extensions, Version=2016.2.822.1, Culture=neutral, PublicKeyToken=7ce17eeaf1d59342'
   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection)
   at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
   at System.Reflection.Assembly.ReflectionOnlyLoad(String assemblyString)
   at Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.OnReflectionOnlyResolve(ResolveEventArgs args, DirectoryInfo directory)
   at System.AppDomain.OnReflectionOnlyAssemblyResolveEvent(RuntimeAssembly assembly, String assemblyFullName)

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Running under executable  C:\<Runtime_Directory>\Application_Desktop.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: DisplayName = Telerik.OpenAccess.35.Extensions, Version=2016.2.822.1, Culture=neutral, PublicKeyToken=7ce17eeaf1d59342
 (Fully-specified)
LOG: Appbase = file:///C:/<Runtime_Directory>/
LOG: Initial PrivatePath = NULL
Calling assembly : (Unknown).
===
LOG: This is an inspection only bind.
LOG: Using application configuration file: C:\<Runtime_Directory>\Application_Desktop.exe.Config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Telerik.OpenAccess.35.Extensions.DLL.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Telerik.OpenAccess.35.Extensions/Telerik.OpenAccess.35.Extensions.DLL.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Modules/Telerik.OpenAccess.35.Extensions.DLL.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Modules/Telerik.OpenAccess.35.Extensions/Telerik.OpenAccess.35.Extensions.DLL.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Telerik.OpenAccess.35.Extensions.EXE.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Telerik.OpenAccess.35.Extensions/Telerik.OpenAccess.35.Extensions.EXE.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Modules/Telerik.OpenAccess.35.Extensions.EXE.
LOG: Attempting download of new URL file:///C:/<Runtime_Directory>/Modules/Telerik.OpenAccess.35.Extensions/Telerik.OpenAccess.35.Extensions.EXE.

   at System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes)
   at System.Reflection.RuntimeAssembly.GetExportedTypes()
   at Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.<>c__DisplayClass1_0.<GetNotAllreadyLoadedModuleInfos>b__2(FileInfo file)
   at System.Linq.Enumerable.<SelectManyIterator>d__17`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.GetModuleInfos(String path)
   at Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.GetModuleInfos(String path)
   at Prism.Modularity.DirectoryModuleCatalog.InnerLoad()
   at Prism.Modularity.ModuleCatalog.Initialize()
   at Prism.Modularity.ModuleManager.Run()
   at Application_Client.Desktop.Bootstrapper.InitializeModules() in D:\a\1\s\Application_Client.Desktop\Bootstrapper.cs:line 73
   at Prism.Unity.UnityBootstrapper.Run(Boolean runWithDefaultConfiguration)
   at Application_Client.Desktop.App.StartUp(Object sender, StartupEventArgs e) in D:\a\1\s\Application_Client.Desktop\App.xaml.cs:line 46
   at System.Windows.Application.OnStartup(StartupEventArgs e)
   at System.Windows.Application.<.ctor>b__1_0(Object unused)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)
   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 MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, 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.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at Application_Client.Desktop.App.Main()

编辑：callstack
在此我的问题的呼叫插场：

>   mscorlib.dll!System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(System.Reflection.AssemblyName assemblyRef, System.Security.Policy.Evidence assemblySecurity, System.Reflection.RuntimeAssembly reqAssembly, ref System.Threading.StackCrawlMark stackMark, System.IntPtr pPrivHostBinder, bool throwOnFileNotFound, bool forIntrospection, bool suppressSecurityChecks) Line 1859  C#
    mscorlib.dll!System.Reflection.RuntimeAssembly.InternalLoad(string assemblyString, System.Security.Policy.Evidence assemblySecurity, ref System.Threading.StackCrawlMark stackMark, System.IntPtr pPrivHostBinder, bool forIntrospection) Line 1743 C#
    mscorlib.dll!System.Reflection.RuntimeAssembly.InternalLoad(string assemblyString, System.Security.Policy.Evidence assemblySecurity, ref System.Threading.StackCrawlMark stackMark, bool forIntrospection) Line 1722    C#
    mscorlib.dll!System.Reflection.Assembly.ReflectionOnlyLoad(string assemblyString) Line 328  C#
    Prism.Wpf.dll!Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.OnReflectionOnlyResolve(System.ResolveEventArgs args, System.IO.DirectoryInfo directory)    Unknown
    mscorlib.dll!System.AppDomain.OnReflectionOnlyAssemblyResolveEvent(System.Reflection.RuntimeAssembly assembly, string assemblyFullName) Line 3191   C#
    [Native to Managed Transition]  
    [Managed to Native Transition]  
    mscorlib.dll!System.Reflection.RuntimeAssembly.GetExportedTypes() Line 1517 C#
    Prism.Wpf.dll!Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.GetNotAllreadyLoadedModuleInfos.AnonymousMethod__2(System.IO.FileInfo file) Unknown
    System.Core.dll!System.Linq.Enumerable.SelectManyIterator<System.IO.FileInfo, Prism.Modularity.ModuleInfo>(System.Collections.Generic.IEnumerable<System.IO.FileInfo> source, System.Func<System.IO.FileInfo, System.Collections.Generic.IEnumerable<Prism.Modularity.ModuleInfo>> selector)    Unknown
    System.Core.dll!System.Linq.Buffer<Prism.Modularity.ModuleInfo>.Buffer(System.Collections.Generic.IEnumerable<Prism.Modularity.ModuleInfo> source)  Unknown
    System.Core.dll!System.Linq.Enumerable.ToArray<Prism.Modularity.ModuleInfo>(System.Collections.Generic.IEnumerable<Prism.Modularity.ModuleInfo> source) Unknown
    Prism.Wpf.dll!Prism.Modularity.DirectoryModuleCatalog.InnerModuleInfoLoader.GetModuleInfos(string path) Unknown
    [AppDomain (Application.Desktop.exe, #1) -> AppDomain (DiscoveryRegion, #2)]    
    Prism.Wpf.dll!Prism.Modularity.DirectoryModuleCatalog.InnerLoad()   Unknown
    Prism.Wpf.dll!Prism.Modularity.ModuleCatalog.Initialize()   Unknown
    Prism.Wpf.dll!Prism.Modularity.ModuleManager.Run()  Unknown
    Application.Desktop.exe!Application.Client.Desktop.Bootstrapper.InitializeModules() Line 73 C#
    Prism.Unity.Wpf.dll!Prism.Unity.UnityBootstrapper.Run(bool runWithDefaultConfiguration) Unknown
    Application.Desktop.exe!Application.Client.Desktop.App.StartUp(object sender, System.Windows.StartupEventArgs e) Line 46    C#
    PresentationFramework.dll!System.Windows.Application.OnStartup(System.Windows.StartupEventArgs e)   Unknown
    PresentationFramework.dll!System.Windows.Application..ctor.AnonymousMethod__1_0(object unused)  Unknown
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)  Unknown
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) Unknown
    WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl()   Unknown
    WindowsBase.dll!MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(object obj)   Unknown
    mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) Line 980  C#
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) Line 928  C#
    mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Line 917    C#
    WindowsBase.dll!MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext 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, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) 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!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) 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, int msg, System.IntPtr wParam, System.IntPtr lParam)  Unknown
    [Native to Managed Transition]  
    [Managed to Native Transition]  
    WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame)   Unknown
    PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore)   Unknown
    PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window)  Unknown
    Application.Desktop.exe!Application.Client.Desktop.App.Main()   Unknown

提前感谢

Answer 1

听起来您正在与 plugin建筑正在经历一些dll地狱。

在不知道应用程序的深度或您正在工作的运行时（我认为是.NET框架），很难确切地说出问题所在，但关键的是：运行时正在寻找依赖性，而不是找到它。

看看。从本质上讲，当框架要求依赖性时，该处理程序会发射。返回null是一个“找不到”，然后该框架将在“通常的位置”中寻找依赖项。 位置

• 与执行组件相同的目录之类的
• 插件文件夹
• 全局汇编缓存（GAC）

插件的主要挑战（根据我的经验）包括依赖关系，并使主机加载这些依赖关系。看看如何确定您的这些模块的位置以及如何/是否包括依赖关系。

更改您的文件系统或环境可能会产生此类问题。也许您的应用程序正在起作用，而Git Clean则在程序目录中删除了DLL。也许DLL已加载到GAC中，但是该应用程序现在期望有不同的版本。

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
    }

    private Assembly? CurrentDomain_AssemblyResolve(object? sender, ResolveEventArgs args)
    {
        var filePath = GetPathFromName(args.Name);
        if(System.IO.File.Exists(filePath))
            return Assembly.Load(filePath);
        else
            return null;
    }

    private string GetPathFromName(string name) => "my logic here";


}