Invocation Error.

Invocation Error.

• Luxsy

  This is whats causing the error,

  Private Sub ThreadCopy_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles ThreadCopy.DoWork

  Dim objLock As Object = New Object

  ThreadCopy.WorkerReportsProgress = True

  SyncLock objLock

  Copy(strGlobalSource, strGlobalDest)

  End SyncLock

  End Sub

  Copy is a procedure that copies a file from one destination to another. Its only called from this event and the variables strGlobalSource and StrGlobalDest are only used by this event. They are given values when the program loads up.

  Thanks

  
  

• Viniciusgf

  Im really confused now. Its not the code i posted before thats starts the error. When the error happens the debugger doesnt highlight any code it just shows me the error so i dont know whats causing the problem.

  Ive looked into what it all means but its just says somthing about reflection i dont even know what reflection is. Can someone please let me know how to handle the error. Its really bugging me now.

  The strange thing is it didnt use to happen but now it happens all the time and i havent even changed my code.

  
  

• soung

  The above details mention line 81 this is whats on that line

  Public Sub ShowFrmMain(ByVal bolStealthArg As Boolean) '//LINE 81

  If bolStealthArg = True Then

  sysTray.Visible = True

  Me.Visible = False

  Else

  sysTray.Visible = False

  Me.Visible = True

  Me.WindowState = FormWindowState.Normal

  Me.StartPosition = FormStartPosition.CenterScreen

  Me.Show()

  End If

  End Sub

  
  

• wanwiz

  Hi,

  After you click on the blue STOP square in Visual Studio can you post your code here please or the SUB or FUNCTION or the MODULE or the CLASS the error occurs in at least

   It should stop with the exception by highlighting the problem line.

   

  Regards,

  S_DS

   

  
  
  

• SHRESHTH

  I copied the details of the exception and here they are.

  System.Reflection.TargetInvocationException was unhandled
  Message="Exception has been thrown by the target of an invocation."
  Source="mscorlib"
  StackTrace:
  at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
  at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
  at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
  at System.Delegate.DynamicInvokeImpl(Object[] args)
  at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
  at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
  at System.Threading.ExecutionContext.runTryCode(Object userData)
  at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
  at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
  at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
  at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
  at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
  at System.Windows.Forms.Control.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
  at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
  at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
  at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
  at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
  at System.Windows.Forms.Application.Run(ApplicationContext context)
  at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
  at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
  at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
  at BMS.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
  at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
  at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
  at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
  at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
  at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
  at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
  at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
  at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
  at System.Threading.ThreadHelper.ThreadStart()

  
  
• Invocation Error.