COMException: 页面文件太小，无法完成操作。 (异常来自 HRESULT:0x800705AF)
StackTrace:
   在 System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
   在 System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode, IntPtr errorInfo)
   在 MS.Internal.Text.TextInterface.Native.Util.ConvertHresultToException(Int32 hr)
   在 MS.Internal.Text.TextInterface.FontFace.GetDesignGlyphMetrics(UInt16* pGlyphIndices, UInt32 glyphCount, GlyphMetrics* pGlyphMetrics)
   在 System.Windows.Media.GlyphTypeface.GlyphMetrics(UInt16* pGlyphIndices, Int32 characterCount, GlyphMetrics* pGlyphMetrics, Double emSize, Single pixelsPerDip, TextFormattingMode textFormattingMode, Boolean isSideways)
   在 System.Windows.Media.GlyphTypeface.GetGlyphMetricsAndIndicesOptimized(UInt32* pCodepoints, Int32 characterCount, Double emSize, Single pixelsPerDip, UInt16[] glyphIndices, GlyphMetrics[] glyphMetrics, TextFormattingMode textFormattingMode, Boolean isSideways)
   在 System.Windows.Media.GlyphTypeface.GetGlyphMetricsOptimized(CharacterBufferRange characters, Double emSize, Single pixelsPerDip, UInt16[] glyphIndices, GlyphMetrics[] glyphMetrics, TextFormattingMode textFormattingMode, Boolean isSideways)
   在 System.Windows.Media.Typeface.CheckFastPathNominalGlyphs(CharacterBufferRange charBufferRange, Double emSize, Single pixelsPerDip, Double scalingFactor, Double widthMax, Boolean keepAWord, Boolean numberSubstitution, CultureInfo cultureInfo, TextFormattingMode textFormattingMode, Boolean isSideways, Boolean breakOnTabs, Int32& stringLengthFit)
   在 MS.Internal.TextFormatting.SimpleRun.CreateSimpleTextRun(CharacterBufferRange charBufferRange, TextRun textRun, TextFormatterImp formatter, Int32 widthLeft, Boolean emergencyWrap, Boolean breakOnTabs, Double pixelsPerDip)
   在 MS.Internal.TextFormatting.SimpleRun.Create(FormatSettings settings, CharacterBufferRange charString, TextRun textRun, Int32 cp, Int32 cpFirst, Int32 runLength, Int32 widthLeft, Int32 idealRunOffsetUnRounded, Double pixelsPerDip)
   在 MS.Internal.TextFormatting.SimpleTextLine.Create(FormatSettings settings, Int32 cpFirst, Int32 paragraphWidth, Double pixelsPerDip)
   在 MS.Internal.TextFormatting.TextFormatterImp.FormatLineInternal(TextSource textSource, Int32 firstCharIndex, Int32 lineLength, Double paragraphWidth, TextParagraphProperties paragraphProperties, TextLineBreak previousLineBreak, TextRunCache textRunCache)
   在 MS.Internal.TextFormatting.TextFormatterImp.FormatLine(TextSource textSource, Int32 firstCharIndex, Double paragraphWidth, TextParagraphProperties paragraphProperties, TextLineBreak previousLineBreak, TextRunCache textRunCache)
   在 System.Windows.Controls.TextBlock.MeasureOverride(Size constraint)
   在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   在 System.Windows.UIElement.Measure(Size availableSize)
   在 System.Windows.ContextLayoutManager.UpdateLayout()
   在 System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   在 System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   在 System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   在 System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   在 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   在 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)