是什么导致“参数无效”。从资源设置图像时出现异常

Question

这只是从用户那里报告的。该程序的这一部分已经在野外进行了广泛的测试和使用，并且在一段时间内没有改变。似乎它对她有用，只是最近才开始失败。由于图像来自资源，因此不需要处置。在我的测试中（并通过检查代码），这应该总是发生在 UI 线程上，所以我最好的猜测是程序已经以某种方式损坏，导致资源中的图像实际上是无效的。这是否有意义，或者有更合理的解释。这是调用堆栈：

Msg: Parameter is not valid.
Source: System.Drawing
Assembly: System.Drawing, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a
Stack: at System.Drawing.Image.get_Width()
at System.Drawing.Image.get_Size()
at System.Windows.Forms.PictureBox.GetPreferredSizeCore(Size
proposedSize)
at System.Windows.Forms.Control.GetPreferredSize(Size proposedSize)
at
System.Windows.Forms.Layout.TableLayout.GetElementSize(IArrangedElement
element, Size proposedConstraints)
at System.Windows.Forms.Layout.TableLayout.InflateColumns(ContainerInfo
containerInfo, Size proposedConstraints, Boolean measureOnly)
at System.Windows.Forms.Layout.TableLayout.ApplyStyles(ContainerInfo
containerInfo, Size proposedConstraints, Boolean measureOnly)
at System.Windows.Forms.Layout.TableLayout.LayoutCore(IArrangedElement
container, LayoutEventArgs args)
at System.Windows.Forms.Layout.LayoutEngine.Layout(Object container,
LayoutEventArgs layoutEventArgs)
at System.Windows.Forms.Control.OnLayout(LayoutEventArgs levent)
at System.Windows.Forms.ScrollableControl.OnLayout(LayoutEventArgs
levent)
at System.Windows.Forms.TableLayoutPanel.OnLayout(LayoutEventArgs levent)
at System.Windows.Forms.Control.PerformLayout(LayoutEventArgs args)
at
System.Windows.Forms.Control.System.Windows.Forms.Layout.IArrangedElement.PerformLayout(IArrangedElement
affectedElement, String affectedProperty)
at System.Windows.Forms.Control.PerformLayout(LayoutEventArgs args)
at
System.Windows.Forms.Control.System.Windows.Forms.Layout.IArrangedElement.PerformLayout(IArrangedElement
affectedElement, String affectedProperty)
at System.Windows.Forms.PictureBox.InstallNewImage(Image value,
ImageInstallationType installationType)
at System.Windows.Forms.PictureBox.set_Image(Image value)
at SayMore.Transcription.UI.OralAnnotationRecorderBaseDlg.UpdateDisplay()
at
SayMore.Transcription.UI.OralAnnotationRecorderBaseDlg.BeginRecording(TimeRange
timeRangeOfSourceBeingAnnotated)
at
SayMore.Transcription.UI.OralAnnotationRecorderBaseDlg.HandleRecordAnnotationMouseDown(Object
sender, MouseEventArgs e)
at
SayMore.Transcription.UI.OralAnnotationRecorderBaseDlg.OnLowLevelKeyDown(Keys
key)
at
SayMore.UI.LowLevelControls.MonitorKeyPressDlg.PreFilterMessage(Message& m)
at System.Windows.Forms.Application.ThreadContext.ProcessFilters(MSG&
msg, Boolean& modified)
at
System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)
at
System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FPreTranslateMessage(MSG&
msg)
at
System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr
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.RunDialog(Form form)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at SayMore.Model.Files.ComponentFile.RecordAnnotations(Form frm,
AudioRecordingType annotationType)
at
SayMore.Transcription.UI.TextAnnotationEditor.<>c_DisplayClassb.<HandleRecordedAnnotationButtonClick>b_a()
at
SayMore.Transcription.UI.TextAnnotationEditor.ShowSegmentationDialog(Action
showDialog)
at
SayMore.Transcription.UI.TextAnnotationEditor.HandleRecordedAnnotationButtonClick(Object
sender, EventArgs e)
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e,
ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e,
ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.ToolStripDropDown.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,

这是我们代码中设置图像的方法：

    protected override void UpdateDisplay()
    {
        _recDeviceIndicator.UpdateDisplay();

        _labelListenButton.Image = (_waveControl.IsPlaying && _playingBackUsingHoldDownButton ?
            Resources.ListenToOriginalRecordingDown : Resources.ListenToOriginalRecording);

        _labelRecordButton.Image = (ViewModel.GetIsRecording() ?
            Resources.RecordingOralAnnotationInProgress : Resources.RecordOralAnnotation);

        _labelListenButton.Enabled = !ViewModel.GetIsRecording() &&
            (ViewModel.CurrentUnannotatedSegment != null || !ViewModel.GetIsFullyAnnotated());

        _labelRecordButton.Enabled = (ViewModel.GetSelectedSegmentIsLongEnough() &&
            _userHasListenedToSelectedSegment &&
            AudioUtils.GetCanRecordAudio(true) &&
            !_waveControl.IsPlaying && !ViewModel.GetIsAnnotationPlaying());

        _labelListenHint.Visible = _spaceBarMode == SpaceBarMode.Listen && _labelListenButton.Enabled;
        _labelRecordHint.Visible = _spaceBarMode == SpaceBarMode.Record && _labelRecordButton.Enabled && !_reRecording && _recordingErrorMessage == null;

        if (_spaceBarMode == SpaceBarMode.Done && _recordingErrorMessage == null)
        {
            if (!_labelFinishedHint.Visible)
            {
                _pictureIcon.Image = Resources.Green_check;
                _labelFinishedHint.Visible = true;
                _tableLayoutButtons.Controls.Add(_labelFinishedHint, 1, 0);
                _tableLayoutButtons.SetRowSpan(_labelFinishedHint, 3);
                AcceptButton = _buttonOK;
            }
        }
        else
        {
            UdateErrorMessageDisplay();

            if (_labelErrorInfo.Visible)
            {
                _pictureIcon.Image = Resources.Information_red;
                if (_labelFinishedHint.Visible)
                {
                    _labelFinishedHint.Visible = false;
                    _tableLayoutButtons.Controls.Remove(_labelFinishedHint);
                }
                _labelRecordHint.Visible = false;
            }
            else
            {
                _pictureIcon.Image = Resources.Information_blue;
            }

            float percentage = (_labelErrorInfo.Visible) ? 50 : 100;
            _tableLayoutButtons.RowStyles[0].Height = (_labelErrorInfo.Visible) ? percentage : 0;
            _tableLayoutButtons.RowStyles[1].Height = (_labelListenHint.Visible) ? percentage : 0;
            _tableLayoutButtons.RowStyles[2].Height = (_labelRecordHint.Visible) ? percentage : 0;
        }
        base.UpdateDisplay();
    }

我不确定设置 Image 的哪个调用导致了异常，但根据上下文，我怀疑是 _labelRecordButton.Image 设置为 Resources.RecordingOralAnnotationInProgress。关键是，在每种情况下，图像都只是来自资源，因此它应该始终有效。

Answer 1

可以是任何东西。 Bitmap 类以针对任何类型的错误生成任何类型的异常而闻名，因此问题的原因不能从异常类型派生。我的猜测是内存不足。