c# - TargetInvocationException 未处理 - C#

Question

我真的不知道发生了什么，为什么会一直发生
调用目标抛出异常。

代码在 frm5

中运行

然后错误显示在
程序.cs:

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());
        }
    }
}  

它在行 Application.Run(new frmMain());

它说 TargetInvocationException 未处理 - 调用目标抛出异常。

这是个异常(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

您正在 frmMain 构造函数中执行一些不应该在那里执行的代码。移动该代码并在 Form Shown 事件上执行它。