普利亚框架称为WPFWEBREQUESTHELPER难以理解的

问题描述 投票：0回答：0
我有一个非常奇怪的问题，我不知道该如何分析。它仅发生在客户的系统上，而不出现在我的机器上。每次客户端重新启动软件并首次打开特定对话框...

创建对话框时，软件将冻结100秒。当对话框创建对话框时，我设法通过附加到软件并打破呼吸箱来获取呼叫储备。看起来WPF正在使用100秒的超时进行WebRequest，但我不明白为什么。我们在代码中不做任何Web Requests，而是以某种方式决定必须进行WebRequest。 diD有人遇到类似的问题，或者可以想象为什么每次打开此对话框时都会发生这个呼叫？任何提示都可能有帮助...

callstack：

file:///C:/Windows/system32/spool/drivers/color/sRGB%20Color%20Space%20Profile.icm TimeOut 100000 ntdll.dll!00007fffc8f246d4() Unknown KernelBase.dll!00007fffc653f310() Unknown WindowsBase.ni.dll!00007fff7073069e() Unknown [Managed to Native Transition] WindowsBase.dll!System.Windows.Threading.DispatcherSynchronizationContext.Wait(System.IntPtr[] waitHandles, bool waitAll, int millisecondsTimeout) Unknown [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) Unknown mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) Unknown System.dll!System.Net.FileWebRequest.GetResponse() Unknown > PresentationCore.dll!MS.Internal.WpfWebRequestHelper.GetResponse(System.Net.WebRequest request) Unknown PresentationCore.dll!System.Windows.Media.ColorContext.Initialize(System.Uri profileUri, bool isStandardProfileUriNotFromUser) Unknown PresentationCore.dll!System.Windows.Media.ColorContext.ColorContext(System.Windows.Media.PixelFormat pixelFormat) Unknown PresentationCore.dll!System.Windows.Media.Imaging.BitmapSource.CreateCachedBitmap(System.Windows.Media.Imaging.BitmapFrame frame, System.Windows.Media.Imaging.BitmapSourceSafeMILHandle wicSource, System.Windows.Media.Imaging.BitmapCreateOptions createOptions, System.Windows.Media.Imaging.BitmapCacheOption cacheOption, System.Windows.Media.Imaging.BitmapPalette palette) Unknown PresentationCore.dll!System.Windows.Media.Imaging.BitmapFrameDecode.FinalizeCreation() Unknown PresentationCore.dll!System.Windows.Media.Imaging.BitmapDecoder.SetupFrames(System.Windows.Media.Imaging.BitmapDecoder decoder, System.Collections.ObjectModel.ReadOnlyCollection<System.Windows.Media.Imaging.BitmapFrame> frames) Unknown PresentationCore.dll!System.Windows.Media.Imaging.BitmapDecoder.Frames.get() Unknown PresentationCore.dll!System.Windows.Media.Imaging.BitmapFrame.CreateFromUriOrStream(System.Uri baseUri, System.Uri uri, System.IO.Stream stream, System.Windows.Media.Imaging.BitmapCreateOptions createOptions, System.Windows.Media.Imaging.BitmapCacheOption cacheOption, System.Net.Cache.RequestCachePolicy uriCachePolicy) Unknown PresentationCore.dll!System.Windows.Media.ImageSourceConverter.ConvertFrom(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value) Unknown PresentationFramework.dll!System.Windows.TemplateContent.TrySharingValue(System.Windows.DependencyProperty property, object value, string parentName, System.Xaml.XamlReader xamlReader, bool allowRecursive, out System.Windows.PropertyValue? sharedValue) Unknown PresentationFramework.dll!System.Windows.TemplateContent.TrySharingProperty(System.Xaml.XamlReader xamlReader, System.Xaml.XamlType parentType, string parentName, MS.Utility.FrugalObjectList<System.Xaml.NamespaceDeclaration> previousNamespaces, out System.Windows.PropertyValue? sharedValue) Unknown PresentationFramework.dll!System.Windows.TemplateContent.ParseNode(System.Xaml.XamlReader xamlReader, System.Windows.TemplateContent.StackOfFrames stack, System.Collections.Generic.List<System.Windows.PropertyValue> sharedProperties, ref int nameNumber, out object newValue) Unknown PresentationFramework.dll!System.Windows.TemplateContent.ParseNodes(System.Windows.TemplateContent.StackOfFrames stack, System.Collections.Generic.List<System.Windows.PropertyValue> sharedProperties, ref int nameNumber) Unknown PresentationFramework.dll!System.Windows.TemplateContent.ParseTree(System.Windows.TemplateContent.StackOfFrames stack, System.Collections.Generic.List<System.Windows.PropertyValue> sharedProperties, ref int nameNumber) Unknown PresentationFramework.dll!System.Windows.TemplateContent.ParseXaml() Unknown PresentationFramework.dll!System.Windows.FrameworkTemplate.Template.set(System.Windows.TemplateContent value) Unknown System.Xaml.dll!MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(object inst, System.Xaml.XamlMember property, object value) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.Logic_ApplyPropertyValue(MS.Internal.Xaml.Context.ObjectWriterContext ctx, System.Xaml.XamlMember prop, object value, bool onParent) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.Logic_DoAssignmentToParentProperty(MS.Internal.Xaml.Context.ObjectWriterContext ctx) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.WriteEndMember() Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.TransformNodes(System.Xaml.XamlReader xamlReader, System.Xaml.XamlObjectWriter xamlWriter, bool onlyLoadOneNode, bool skipJournaledProperties, bool shouldPassLineNumberInfo, System.Xaml.IXamlLineInfo xamlLineInfo, System.Xaml.IXamlLineInfoConsumer xamlLineInfoConsumer, MS.Internal.Xaml.Context.XamlContextStack<System.Windows.Markup.WpfXamlFrame> stack, System.Windows.Markup.IStyleConnector styleConnector) Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.Load(System.Xaml.XamlReader xamlReader, System.Xaml.IXamlObjectWriterFactory writerFactory, bool skipJournaledProperties, object rootObject, System.Xaml.XamlObjectWriterSettings settings, System.Uri baseUri) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.CreateObject(System.Windows.Baml2006.KeyRecord key) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.OnGettingValue(object key, ref object value, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.OnGettingValuePrivate(object key, ref object value, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValueWithoutLock(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValue(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.DeferredResourceReference.GetValue(System.Windows.BaseValueSourceInternal valueSource) Unknown PresentationFramework.dll!System.Windows.StaticResourceExtension.TryProvideValueImpl(System.IServiceProvider serviceProvider, bool allowDeferredReference, bool mustReturnDeferredResourceReference) Unknown PresentationFramework.dll!System.Windows.StaticResourceExtension.ProvideValueInternal(System.IServiceProvider serviceProvider, bool allowDeferredReference) Unknown System.Xaml.dll!MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(System.Windows.Markup.MarkupExtension me, System.IServiceProvider serviceProvider) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.Logic_ProvideValue(MS.Internal.Xaml.Context.ObjectWriterContext ctx) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.Logic_AssignProvidedValue(MS.Internal.Xaml.Context.ObjectWriterContext ctx) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.WriteEndMember() Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.TransformNodes(System.Xaml.XamlReader xamlReader, System.Xaml.XamlObjectWriter xamlWriter, bool onlyLoadOneNode, bool skipJournaledProperties, bool shouldPassLineNumberInfo, System.Xaml.IXamlLineInfo xamlLineInfo, System.Xaml.IXamlLineInfoConsumer xamlLineInfoConsumer, MS.Internal.Xaml.Context.XamlContextStack<System.Windows.Markup.WpfXamlFrame> stack, System.Windows.Markup.IStyleConnector styleConnector) Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.Load(System.Xaml.XamlReader xamlReader, System.Xaml.IXamlObjectWriterFactory writerFactory, bool skipJournaledProperties, object rootObject, System.Xaml.XamlObjectWriterSettings settings, System.Uri baseUri) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.CreateObject(System.Windows.Baml2006.KeyRecord key) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.OnGettingValue(object key, ref object value, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.OnGettingValuePrivate(object key, ref object value, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValueWithoutLock(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValue(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValueWithoutLock(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValue(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValueWithoutLock(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.GetValue(object key, out bool canCache) Unknown PresentationFramework.dll!System.Windows.ResourceDictionary.Lookup(object key, bool allowDeferredResourceReference, bool mustReturnDeferredResourceReference, bool canCacheAsThemeResource) Unknown PresentationFramework.dll!System.Windows.StaticResourceExtension.FindResourceInEnviroment(System.IServiceProvider serviceProvider, bool allowDeferredReference, bool mustReturnDeferredResourceReference) Unknown PresentationFramework.dll!System.Windows.StaticResourceExtension.TryProvideValueImpl(System.IServiceProvider serviceProvider, bool allowDeferredReference, bool mustReturnDeferredResourceReference) Unknown PresentationFramework.dll!System.Windows.StaticResourceExtension.ProvideValueInternal(System.IServiceProvider serviceProvider, bool allowDeferredReference) Unknown System.Xaml.dll!MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(System.Windows.Markup.MarkupExtension me, System.IServiceProvider serviceProvider) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.Logic_ProvideValue(MS.Internal.Xaml.Context.ObjectWriterContext ctx) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.Logic_AssignProvidedValue(MS.Internal.Xaml.Context.ObjectWriterContext ctx) Unknown System.Xaml.dll!System.Xaml.XamlObjectWriter.WriteEndMember() Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.TransformNodes(System.Xaml.XamlReader xamlReader, System.Xaml.XamlObjectWriter xamlWriter, bool onlyLoadOneNode, bool skipJournaledProperties, bool shouldPassLineNumberInfo, System.Xaml.IXamlLineInfo xamlLineInfo, System.Xaml.IXamlLineInfoConsumer xamlLineInfoConsumer, MS.Internal.Xaml.Context.XamlContextStack<System.Windows.Markup.WpfXamlFrame> stack, System.Windows.Markup.IStyleConnector styleConnector) Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.Load(System.Xaml.XamlReader xamlReader, System.Xaml.IXamlObjectWriterFactory writerFactory, bool skipJournaledProperties, object rootObject, System.Xaml.XamlObjectWriterSettings settings, System.Uri baseUri) Unknown PresentationFramework.dll!System.Windows.Markup.WpfXamlLoader.LoadBaml(System.Xaml.XamlReader xamlReader, bool skipJournaledProperties, object rootObject, System.Xaml.Permissions.XamlAccessLevel accessLevel, System.Uri baseUri) Unknown PresentationFramework.dll!System.Windows.Markup.XamlReader.LoadBaml(System.IO.Stream stream, System.Windows.Markup.ParserContext parserContext, object parent, bool closeStream) Unknown

Edit：

我在此视图中使用DataTemplate：
<DataTemplate DataType="{x:Type shared:PreviewPageViewModel}">
<Grid Background="White">
  <Grid.RowDefinitions>
    <RowDefinition Height="*" />
  </Grid.RowDefinitions>
  <Image Source="{Binding PreviewPicturePath, Converter={StaticResource StringToImageSourceConverter}}" 
                 Stretch="Uniform" 
                 StretchDirection="Both"
                 Grid.Row="0"
                 Visibility="{Binding PicturePathValid, Converter={StaticResource BooleanToVisibilityConverter}}" />
  <ContentControl Grid.Row="0"
                          BorderBrush="DarkGray"
                          BorderThickness="10"
                          HorizontalAlignment="Center"
                          VerticalAlignment="Center"
                          Content="{Binding Path=FunctionViewAdapter}"
                          ContentTemplateSelector="{StaticResource HintTemplateSelector}"
                          Visibility="{Binding ShowFallbackPreview, Converter={StaticResource BooleanToVisibilityConverter}}"
                          Opacity="0.85">
  </ContentControl>
</Grid>


  

绑定的属性只是一个字符串：


  string directory = Path.GetDirectoryName(panelPath);
  string panelPicturePath = Path.Combine(directory, "PreviewPicture.png");

  if (File.Exists(panelPicturePath))
  {
    PreviewPicturePath = panelPicturePath;
  }


  
     public class StringToImageSourceConverter : IValueConverter
  {
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
  if (!(value is string valueString))
  {
    return null;
  }
  try
  {
    ImageSource image = BitmapFrame.Create(new Uri(valueString), BitmapCreateOptions.IgnoreImageCache, BitmapCacheOption.OnLoad);
    return image;
  }
  catch { return null; }
}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
  throw new NotImplementedException();
}

}

    

	
确保您没有任何线程池/耗尽问题。
我也有类似的问题。 colorContext尝试读取C：/Windows/System32/spool/drivers/color/srgb颜色空间配置文件。icm，使用wpfwebrequesthelper。同时，另一个WPF控件使用了计时器，该计时器试图调用调度程序。召唤每100ms，但是调度员正在等待WPFWebrequestHelper。这导致了这种情况，其中多个计时器线程（来自线程池）被锁定在dispatcher.invoke上。我想WPFWEBREQUESTHELPER和计时器都试图使用同一线程池，在我的情况下，这只是精疲力尽。我通过避免多个调度程序来修复它。
    

	


c#

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