我创建了一个每月打印的 FixedDocument 报告。它的平均长度约为 350 页，其中大约一半的页面是约 200kb 的 jpeg 图像。该报告在 DocumentViewer 中显示得很好，但我在尝试打印它时遇到了问题。
使用时
DocumentViewer1.Print()
如果我只是尝试打印前三分之一的月份数据，例如。120页，很好用。但是，如果我尝试整个月，大约在第 160 页，我会收到以下错误
System.OutOfMemoryException: Insufficient memory to continue the execution
of the program.
at System.Windows.Media.Imaging.BitmapSource.CriticalCopyPixels(Int32Rect
sourceRect, IntPtr buffer, Int32 bufferSize, Int32 stride)
at System.Windows.Media.Imaging.BitmapSource.CriticalCopyPixels(Int32Rect
sourceRect, Array pixels, Int32 stride, Int32 offset)
at Microsoft.Internal.GDIExporter.CGDIBitmap.Load(BitmapSource pBitmap,
Byte[] buffer, PixelFormat LoadFormat)
at
Microsoft.Internal.GDIExporter.CGDIRenderTarget.DrawBitmap(BitmapSource
pImage, Byte[] buffer, Rect rectDest)
at Microsoft.Internal.GDIExporter.CGDIRenderTarget.DrawImage(BitmapSource
source, Byte[] buffer, Rect rect)
at
Microsoft.Internal.AlphaFlattener.BrushProxyDecomposer.Microsoft.Internal.Al
phaFlattener.IProxyDrawingContext.DrawImage(ImageProxy image, Rect dest,
Geometry clip, Matrix trans)
at
Microsoft.Internal.AlphaFlattener.PrimitiveRenderer.RenderImage(ImageProxy
image, Rect dest, Geometry bounds, Boolean clipToBounds, Int32 start, Matrix
trans, String desp)
at
Microsoft.Internal.AlphaFlattener.PrimitiveRenderer.RenderImage(ImageProxy
image, Rect dest, Geometry clip, Matrix trans, String desp)
at Microsoft.Internal.AlphaFlattener.Flattener.AlphaRender(Primitive
primitive, List`1 overlapping, Int32 overlapHasTransparency, Boolean
disjoint, String desp)
at
Microsoft.Internal.AlphaFlattener.Flattener.AlphaFlatten(IProxyDrawingContex
t dc, Boolean disjoint)
at Microsoft.Internal.AlphaFlattener.Flattener.Convert(Primitive tree,
ILegacyDevice dc, Double width, Double height, Double dpix, Double dpiy,
Nullable`1 quality)
at Microsoft.Internal.AlphaFlattener.MetroDevice0.FlushPage(ILegacyDevice
sink, Double width, Double height, Nullable`1 outputQuality)
at Microsoft.Internal.AlphaFlattener.MetroToGdiConverter.FlushPage()
at
System.Windows.Xps.Serialization.NgcSerializationManagerAsync.EndPage()
at
System.Windows.Xps.Serialization.NgcFixedPageSerializerAsync.EndPersistObjec
tData(Boolean isManualStartDoc)
at
System.Windows.Xps.Serialization.NgcFixedPageSerializerAsync.AsyncOperation(
NGCSerializerContext context)
at
System.Windows.Xps.Serialization.NgcSerializationManagerAsync.InvokeSaveAsXa
mlWorkItem(Object arg)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate
callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object
source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.DispatcherOperation.InvokeImpl()
at
System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object
state)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at
System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedClea
nup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32
msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam,
IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate
callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object
source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority
priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(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.Unsaf
eNativeMethods.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.Run(ApplicationContext context)
at
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun(
)
at
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoAppl
icationModel()
然后我认为我可以通过将文档拆分为 30 页的小文档来一次打印 30 页来胜过它：
Dim dlg = New PrintDialog()
If dlg.ShowDialog() = True Then
Dim PageCounter As Int32 = 0
Dim ListOfDocs As New List(Of FixedDocument)
Dim CurrentFixedDoc As New FixedDocument
For Each FixedSizePag As FixedPage In PrintListOfPages
Dim FixedSizedPageConten As PageContent = New PageContent
CType(FixedSizedPageConten, IAddChild).AddChild(FixedSizePag)
CurrentFixedDoc.Pages.Add(FixedSizedPageConten)
PageCounter = PageCounter + 1
If PageCounter >= 30 Then
ListOfDocs.Add(CurrentFixedDoc)
PageCounter = 0
CurrentFixedDoc = New FixedDocument
End If
Next
If CurrentFixedDoc.Pages.Count > 0 Then
ListOfDocs.Add(CurrentFixedDoc)
End If
For Each docum In ListOfDocs
dlg.PrintDocument(docum.DocumentPaginator, "Testing - Part " & (ListOfDocs.IndexOf(docum) + 1) & " of " & ListOfDocs.Count)
Next
End If
但这只是导致完全相同的错误。我已经尝试从中点到月底打印一百页，这很有效，所以它必须是页面的数量而不是特定的图像（图像只是 jpeg 全部来自一个来源，最大大小 400kb）。
我看到一次打印 30 页时正在使用的内存量
Start = 96Mb
30 pages = 367Mb
60 pages = 588Mb
90 pages = 825Mb
120 pages = 1003Mb
150 pages = 1238Mb
然后在下一批以 1281Mb 崩溃
我已经在一台真正的打印机和 XPS windows 打印机上进行了测试。当我记下这些内存值时，我一直等到每个部分都完全假脱机并打印出来。
我不明白为什么当我将它们分成单独的单独文档时它只是这样构建。我必须处理一些东西，但我不确定是什么？