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嗨，我正在用 C# 开发 MMC snap，

在此我想读取 XML 文件，以便将我的 xml 文件放在哪里。

代码没有给出任何构建错误，但是当我在 MMC 中添加管理单元时，它给出了错误该怎么做。

[SnapInSettings("{2078B103-76FF-46E1-95BB-8B2CE3A72E60}", 
     DisplayName = "Configuration", 
     Description = "abc Pvt Ltd.")
    ]
    public class Mymmc : SnapIn
    {
        XDocument xDoc;
        public Sararmmc()
        {
            ScopeNode childscopenode;
            xDoc = XDocument.Load("MMCSnapinXML.xml");
            IEnumerable<XElement> xelements = xDoc.Root.Descendants();
            this.RootNode = new ScopeNode();
            this.RootNode.DisplayName = xDoc.Root.Attribute("name").Value;
            foreach (XElement elm in xelements)
            {
                childscopenode = new ScopeNode();
                childscopenode.DisplayName = elm.Attribute("name").Value;
                this.RootNode.Children.Add(childscopenode);
            }

        }

    }

我得到异常已被调用的目标抛出。

Server stack trace: 
   at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck)
   at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache)
   at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache)
   at System.Activator.CreateInstance(Type type, Boolean nonPublic)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo, StackCrawlMark& stackMark)
   at System.Activator.CreateInstance(String assemblyName, String typeName)
   at System.AppDomain.CreateInstance(String assemblyName, String typeName)
   at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName)
   at Microsoft.ManagementConsole.Internal.SnapInClient.CreateSnapIn(String assemblyName, String typeName)
   at Microsoft.ManagementConsole.Internal.ClassLibraryServices.Microsoft.ManagementConsole.Internal.IClassLibraryServices.CreateSnapIn(String assemblyName, String typeName)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext)

Exception rethrown at [0]: 
   at Microsoft.ManagementConsole.Executive.SnapInInitializationOperation.OnStart()
   at Microsoft.ManagementConsole.Executive.Operation.Start()
   at Microsoft.ManagementConsole.Executive.RunningOperationsTable.EnqueueOperation(Operation operation)
   at Microsoft.ManagementConsole.Executive.StandAloneComponentData..ctor(SnapInRegistrationInfo info, Int32 bookkeepingId)
   at Microsoft.ManagementConsole.Advanced.FrameworkSnapInFactory.Microsoft.ManagementConsole.Advanced.ISnapInFactory.CreateSnapIn(Int32 bookkeepingId, String snapInKey, Object& snapIn)
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1 回答 1

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您的构造函数中可能会抛出许多异常（堆栈跟踪表明这是错误的根源）。它可能是在 XDocument.Load 上引发了格式错误的 XML 异常，如果您正在访问的任何命名节点/属性不存在，它也可能是空引用异常。它可能是文件未找到异常，甚至是 SecurityException - 它甚至可能是更模糊的东西，例如 MMC 要求对您的程序集进行签名.. 不知道您遇到什么类型的异常，任何人都很难帮助您！

正如我在评论中所说，当您在运行时收到无法轻易解释的错误时 - 这是在您的应用程序中进行详细日志记录变得非常有价值的时候！NLog 和 log4net 是 .NET 应用程序最流行的两个日志框架

于 2011-09-06T07:58:30.737 回答