TargetInvocationException was unhandled - C #

Question

I really can not understand what is happening and why it continues to occur.
An exception is selected as the target of the call.

code executed in frm5

then the error is displayed on the Program.cs page:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace BlueStitch
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new frmMain());
        }
    }
}  

he was in line Application.Run(new frmMain());

He says TargetInvocationException was unhandled - Exception has been thrown by the target of an invocation.

This is an exception

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentException: Parameter is not valid.
at System.Drawing.Image.get_FrameDimensionsList()
at System.Drawing.ImageAnimator.CanAnimate(Image image)
at System.Drawing.ImageAnimator.ImageInfo..ctor(Image image)
at System.Drawing.ImageAnimator.Animate(Image image, EventHandler onFrameChangedHandler)
at System.Windows.Forms.PictureBox.Animate(Boolean animate)
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at BlueStitch.frmStitch.backgroundWorker1_RunWorkerCompleted(Object sender, RunWorkerCompletedEventArgs e) in C:\Users\Freddie Rosillo\Documents\Visual Studio 2008\Projects\BlueStitch\BlueStitch\BlueStitch\frmStitch.cs:line 976
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& 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.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.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 BlueStitch.Program.Main() in C:\Users\Freddie Rosillo\Documents\Visual Studio 2008\Projects\BlueStitch\BlueStitch\BlueStitch\Program.cs:line 21

Answer 1

Some code is being executed inside your frmMain constructor, which should not be executed there. Move this code and execute it in the Form Shown event.

Answer 2

I don't really like the graphics, but the bad line:

System.Drawing.Image.get_FrameDimensionsList ()

GDI + , , FrameDimensionsCount ... gif , ? TIFF?

GdipImageGetFrameDimensionsCount , - . :

[Browsable(false)]
    public Guid[] FrameDimensionsList
    {
      get
      {
        int count;
        int frameDimensionsCount = SafeNativeMethods.Gdip.GdipImageGetFrameDimensionsCount(new HandleRef((object) this, this.nativeImage), out count);
        if (frameDimensionsCount != 0)
          throw SafeNativeMethods.Gdip.StatusException(frameDimensionsCount);
        if (count <= 0)
          return new Guid[0];
        int num1 = Marshal.SizeOf(typeof (Guid));
        IntPtr num2 = Marshal.AllocHGlobal(num1 * count);
        if (num2 == IntPtr.Zero)
          throw SafeNativeMethods.Gdip.StatusException(3);
        int frameDimensionsList = SafeNativeMethods.Gdip.GdipImageGetFrameDimensionsList(new HandleRef((object) this, this.nativeImage), num2, count);
        if (frameDimensionsList != 0)
        {
          Marshal.FreeHGlobal(num2);
          throw SafeNativeMethods.Gdip.StatusException(frameDimensionsList);
        }
        else
        {
          Guid[] guidArray = new Guid[count];
          try
          {
            for (int index = 0; index < count; ++index)
              guidArray[index] = (Guid) System.Drawing.UnsafeNativeMethods.PtrToStructure((IntPtr) ((long) num2 + (long) (num1 * index)), typeof (Guid));
          }
          finally
          {
            Marshal.FreeHGlobal(num2);
          }
          return guidArray;
        }
      }
    }

Answer 3

, BackgroundWorker . , , . , ?

, ArgumentException COM . SafeNativeMethods.Gdip.StatusException ArgumentException, 2, 13, 14, 15, 16, 19 20. .

Answer 4

FrameDimensionsList frmStitch.backgroundWorker1_RunWorkerCompleted, , BackgroundWorker. RunWorkerCompleted , BackgroundWorker.

BackgroundWorker.ReportProgress BGW . - ( , ), BGW, BGW , - .

,

Answer 5

.NET Application.Run(new frmMain());, , , .

, GDI +, GDI , , - .

, , , , , , , . WPF, WPF . WPF .NET Forms Windows Forms .