数据差异过大时，设置过度狭窄的y轴范围会导致部分数据被压缩或消失，建议使用对数坐标轴或适当调整y轴范围。

有没有大神知道的，最好贴出获取标题编号的代码，先谢谢了

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https://cloud.tencent.com/developer/article/1871437 我之前遇到过这样的 但是因为渲染方式不同导致图像覆盖在wpf 控件上，如果你想要wpf控件覆盖到视频上请参考此方法

可以尝试下： XAML： <Window x:Class="ScrollViewerTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525" DataContext="{Binding RelativeSource={RelativeSource Self}}"> <StackPanel> <TextBlock Text="{Binding Path=Progress, StringFormat=Progress: {0}}" /> <Image Source="{Binding Path=Image}" /> </StackPanel> </Window> 代码： public partial class MainWindow : Window, INotifyPropertyChanged { #region Public Properties private int _progress; public int Progress { get { return _progress; } set { if (_progress != value) { _progress = value; if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs("Progress")); } } } private BitmapImage image; public BitmapImage Image { get { return image; } set { if (image != value) { image = value; if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs("Image")); } } } #endregion BackgroundWorker worker = new BackgroundWorker(); public MainWindow() { InitializeComponent(); worker.DoWork += backgroundWorker1_DoWork; worker.ProgressChanged += new ProgressChangedEventHandler(worker_ProgressChanged); worker.WorkerReportsProgress = true; worker.RunWorkerAsync(@"http://Tools.CentralShooters.co.nz/Images/ProgressiveSample1.jpg"); } // This function is based on code from // http://devtoolshed.com/content/c-download-file-progress-bar private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { // the URL to download the file from string sUrlToReadFileFrom = e.Argument as string; // first, we need to get the exact size (in bytes) of the file we are downloading Uri url = new Uri(sUrlToReadFileFrom); System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url); System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse(); response.Close(); // gets the size of the file in bytes Int64 iSize = response.ContentLength; // keeps track of the total bytes downloaded so we can update the progress bar Int64 iRunningByteTotal = 0; // use the webclient object to download the file using (System.Net.WebClient client = new System.Net.WebClient()) { // open the file at the remote URL for reading using (System.IO.Stream streamRemote = client.OpenRead(new Uri(sUrlToReadFileFrom))) { using (Stream streamLocal = new MemoryStream((int)iSize)) { // loop the stream and get the file into the byte buffer int iByteSize = 0; byte[] byteBuffer = new byte[iSize]; while ((iByteSize = streamRemote.Read(byteBuffer, 0, byteBuffer.Length)) > 0) { // write the bytes to the file system at the file path specified streamLocal.Write(byteBuffer, 0, iByteSize); iRunningByteTotal += iByteSize; // calculate the progress out of a base "100" double dIndex = (double)(iRunningByteTotal); double dTotal = (double)byteBuffer.Length; double dProgressPercentage = (dIndex / dTotal); int iProgressPercentage = (int)(dProgressPercentage * 100); // update the progress bar, and we pass our MemoryStream, // so we can use it in the progress changed event handler worker.ReportProgress(iProgressPercentage, streamLocal); } // clean up the file stream streamLocal.Close(); } // close the connection to the remote server streamRemote.Close(); } } } void worker_ProgressChanged(object sender, ProgressChangedEventArgs e) { Dispatcher.BeginInvoke( System.Windows.Threading.DispatcherPriority.Normal, new Action(delegate() { MemoryStream stream = e.UserState as MemoryStream; BitmapImage bi = new BitmapImage(); bi.BeginInit(); bi.StreamSource = new MemoryStream(stream.ToArray()); bi.EndInit(); this.Progress = e.ProgressPercentage; this.Image = bi; } )); } public event PropertyChangedEventHandler PropertyChanged; }

StaticResource将在对象构造上解析。 每当控制需要资源时，DynamicResource将被评估和解决

我也遇到了这个问题。首先，你必须手动建立你的DLL项目，右键单击Build。然后它会工作。

下面是一个使用故事板动画矩形渐变的例子。 <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="GradientBrushAnimation.MainWindow" x:Name="Window" Title="MainWindow" Width="640" Height="480"> <Window.Resources> <Storyboard x:Key="Storyboard1"> <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[0].(GradientStop.Color)" Storyboard.TargetName="rectangle"> <EasingColorKeyFrame KeyTime="0:0:2" Value="Red"/> </ColorAnimationUsingKeyFrames> <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).(GradientBrush.GradientStops)[1].(GradientStop.Color)" Storyboard.TargetName="rectangle"> <EasingColorKeyFrame KeyTime="0:0:2" Value="#FF71FF00"/> </ColorAnimationUsingKeyFrames> </Storyboard> </Window.Resources> <Window.Triggers> <EventTrigger RoutedEvent="FrameworkElement.Loaded"> <BeginStoryboard Storyboard="{StaticResource Storyboard1}"/> </EventTrigger> </Window.Triggers> <Grid x:Name="LayoutRoot"> <Rectangle x:Name="rectangle" Margin="78,102,292,144" Stroke="Black"> <Rectangle.Fill> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="Black" Offset="0"/> <GradientStop Color="White" Offset="1"/> </LinearGradientBrush> </Rectangle.Fill> </Rectangle> </Grid> </Window>

它们不是同一样东西。 x:Name是一个xaml概念，主要用于引用元素。当你给一个元素x：Name xaml属性时，“指定x:Name变成当处理xaml时在底层代码中创建的字段的名称，并且该字段保存对该对象的引用。（MSDN）所以，这是一个设计器生成的字段，默认情况下具有内部访问权限。 Name是a的现有字符串属性FrameworkElement，以xaml属性的形式列示为任何其他wpf元素属性。 因此，这也意味着x:Name可以用于更广泛的对象。这是一种使xaml中的任何内容都能被给定名称引用的技术。