"GDI +中发生一般错误".用动画GIF加载PictureBox之后 [英] "A generic error occurred in GDI+" after loading a PictureBox with an animated GIF

问题描述

我在.NET 2.0中有一个Windows Forms应用程序，在窗体上有一个PictureBox，并通过设置PictureBox的ImageLocation属性将其与动画GIF一起加载.当该动画渲染下一帧时，我得到以下异常和堆栈跟踪:

I have a Windows Forms application in .NET 2.0 with a PictureBox on a form and I load it with an animated GIF by setting the PictureBox's ImageLocation property. When it is time for the animation to render the next frame, I get the following exception and stack trace:

A generic error occurred in GDI+.
   at System.Drawing.Image.SelectActiveFrame(FrameDimension dimension, Int32 frameIndex)
   at System.Drawing.ImageAnimator.ImageInfo.UpdateFrame()
   at System.Drawing.ImageAnimator.UpdateFrames()
   at System.Windows.Forms.PictureBox.OnPaint(PaintEventArgs pe)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   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(Form mainForm)
   at AIRNow.IMS.Mapper.MapWizard.Main() in C:\Projects\AIRNowI\IMS\UserInterface\MapWizard\MapWizard.cs:line 14
   at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

推荐答案

我不确定为什么会发生这种情况，但是我找到了解决方法.我将PictureBox的WaitOnLoad属性设置为True.如果我将其更改为False(默认值)，则可以解决此问题.

I'm not entirely sure why this happens, but I found a workaround. I had the PictureBox's WaitOnLoad property set to True. If I change it to False (the default) it resolves the issue.

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