近期遇到一个问题。窗口在Loaded同一时候Resize会出现黑屏或者直接崩溃， 调查发现是WPF后端的Render线程渲染UI到DirectX时崩溃。

关于WPF有2个线程的解释例如以下：

遇到的这个问题就是用于处理呈现的线程挂了，异常例如以下：

Exception from HRESULT: 0x88980406

Stack Trace:

0000000021a4d8d8 000007fef7a66869 [HelperMethodFrame: 0000000021a4d8d8]

0000000021a4da20 000007fee485ae0f System.Windows.Media.Composition.DUCE+Channel.SyncFlush()*** WARNING: Unable to verify checksum for PresentationCore.ni.dll

0000000021a4dae0 000007fee3e95615 System.Windows.Interop.HwndTarget.UpdateWindowSettings(Boolean, System.Nullable`1<ChannelSet>)

0000000021a4dd10 000007fee3eabfec System.Windows.Interop.HwndTarget.UpdateWindowSettings(Boolean)

0000000021a4dd80 000007fee3eabd0e System.Windows.Interop.HwndTarget.UpdateWindowPos(IntPtr)

0000000021a4dee0 000007fee3e95fd7 System.Windows.Interop.HwndTarget.HandleMessage(MS.Internal.Interop.WindowMessage, IntPtr, IntPtr)

0000000021a4e070 000007fee3e93d14 System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)

0000000021a4e0c0 000007fee4b2b450 MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)

1. Update your video drivers, and/or try different video hardware in the problem machine(s). 【试过560、660、770、970显卡都不会解决这个问题。 试过320.18, 320.49, 353.30等驱动也都不会解决这个问题】

2. Disable Hardware rendering. As a quick test, you can use the DisableHWAcceleration registry value discussed here. You would set the value to 1 in order to disable WPF‘s hardware rendering pipeline. Note that this affects all WPF applications running in that user‘s session, so be advised you might be impacting more than one application. There are other options for disabling hardware acceleration at a more granular level. Starting in .Net 3.5, you can disable it programmatically on a per-window basis by using the HwndTarget.RenderMode property. Starting in .Net 4.0, you can disable it programmatically on a per-process basis by using the RenderOptions.ProcessRenderMode property. 【更改注冊表不会解决这个问题】

3. Upgrade to the latest version and service pack level of the .Net Framework available for your target platform. 【升级到Net 4.5后。问题解决。降级到4.0后。又出现】

4. Disable the use of Windows.AllowsTransparency and Popup.AllowsTransparency in your application.【包装的应用窗口的AllowsTransparency为False】

5. If you are on Windows XP or Windows 2003, test on a newer operating system, and upgrade if possible.【没有測试。升级OS不太可能】

6. If System.OutOfMemoryExceptions are being reported, then monitor the process‘s memory usage in Performance Monitor; particularly the Process\Virtual Bytes, Process\Private Bytes, and .NET CLR Memory\# Bytes in All Heaps counters. Also monitor the User Objects and GDI Objects for the process in Windows Task Manager. If you can determine that a specific resource is being exhausted, then troubleshoot the application to fix whatever is causing that resource consumption. Ultimately that should resolve the System.OutOfMemoryException.【查看内存和句柄等，没有内存泄露】

微软说明 Net 4.5解决此问题：