解决方法：将“异常由调用的目标引发”。 C＃ [英] How to solve: "exception was thrown by the target of invocation" C#

问题描述

C＃

每次运行porgram时，都会出现以下异常：

Every time I run my porgram I get this exception:

但是当我在调试模式下运行时，没有例外，并且程序运行正常，我该怎么办？

But when I run in debug mode, there is no exception and the program works fine, what can I do?

注意：我在项目中的任何地方都不使用 invoke（）

NOTE: I do not use invoke() anywhere in the project

编辑：：好的，这是在详细信息中找到的代码：
如果有人知道如何使用protoBuff，并且知道此问题...。

Okay, here is the code found in the details: If someone know how to use protoBuff, and know this problem....

    ************** Exception Text **************
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> ProtoBuf.ProtoException: Incorrect wire-type deserializing TimeSpan
   at ProtoBuf.ProtoBcl.ProtoTimeSpan.DeserializeTicks(SerializationContext context) in c:\protobuf-net_fixed\trunk\protobuf-net\ProtoBcl\ProtoTimeSpan.cs:line 80
   at ProtoBuf.ProtoBcl.ProtoTimeSpan.DeserializeDateTime(SerializationContext context) in c:\protobuf-net_fixed\trunk\protobuf-net\ProtoBcl\ProtoTimeSpan.cs:line 41
   at ProtoBuf.Property.PropertyDateTimeString`1.DeserializeImpl(TSource source, SerializationContext context) in c:\protobuf-net_fixed\trunk\protobuf-net\Property\PropertyDateTimeString.cs:line 32
   at ProtoBuf.Property.Property`2.Deserialize(TSource source, SerializationContext context) in c:\protobuf-net_fixed\trunk\protobuf-net\Property\Property.cs:line 150
   at ProtoBuf.Serializer`1.Deserialize[TCreation](T& instance, SerializationContext context) in c:\protobuf-net_fixed\trunk\protobuf-net\SerializerT.cs:line 568
   at ProtoBuf.Serializer`1.DeserializeChecked[TCreation](T& instance, SerializationContext source) in c:\protobuf-net_fixed\trunk\protobuf-net\SerializerT.cs:line 400
   at ProtoBuf.SerializerItemProxy`2.Deserialize(TActualClass& instance, SerializationContext source) in c:\protobuf-net_fixed\trunk\protobuf-net\SerializerProxy.cs:line 86
   at ProtoBuf.Serializer.Deserialize[T](SerializationContext source) in c:\protobuf-net_fixed\trunk\protobuf-net\Serializer.cs:line 302
   at ProtoBuf.Serializer.Deserialize[T](Stream source) in c:\protobuf-net_fixed\trunk\protobuf-net\Serializer.cs:line 289
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
   at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at ProtoBuf.Serializer.NonGeneric.Deserialize(Type type, Stream source) in c:\protobuf-net_fixed\trunk\protobuf-net\NonGeneric.cs:line 154
   at ProtoBuf.Serializer.NonGeneric.TryDeserializeWithLengthPrefix(Stream source, PrefixStyle style, Getter`2 typeReader, Object& item) in c:\protobuf-net_fixed\trunk\protobuf-net\NonGeneric.cs:line 128
   at AccessPoint.MainForm.getEventsList() in C:\Users\user\Desktop\accesspoint\AccessPoint\AccessPoint\MainForm.cs:line 97
   at AccessPoint.MainForm.Form1_Load(Object sender, EventArgs e) in C:\Users\user\Desktop\accesspoint\AccessPoint\AccessPoint\MainForm.cs:line 18
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

第97行：

int startIndex = count - 10, index = 0;
                object obj;
                while (Serializer.NonGeneric.TryDeserializeWithLengthPrefix(file, PrefixStyle.Base128, tag =>
                {
                    return index++ >= startIndex ? typeof(EventsWireFrame) : null;
                }, out obj))
                {
                    EventsWireFrame evt = (EventsWireFrame)obj;
                    AddEventToTable(evt.eventDate, evt.eventType, evt.eventKeyNumber, evt.eventKeyName, evt.eventDoor, true);

                }

我听不懂，怎么了？我是否需要添加另一部分代码？也许是seraliztaion？

I can't get it, what's wrong? Do I need to add another part of code? Maybe the seraliztaion?

推荐答案

TargetInvocationException 通过告诉您通常在 something.Invoke 。

您需要做的是查看 InnerException 属性（ TargetInvocationException 对象），这将为您提供实际抛出的异常，并提供更有用的堆栈跟踪。

What you have to do is look at the InnerException property of the exception object (the TargetInvocationException object), this will give you the actual exception that was thrown, with a more useful stack trace.

这篇关于解决方法：将“异常由调用的目标引发”。 C＃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！