重现步骤
1.从https://github.com/supershopping/OxyPlotPrintTest克隆存储库
1.运行应用程序
1.点击“添加数据”按钮
1.点击“打印”按钮，选择一台打印机打印在“信纸大小的纸”。
平台：WPF
.NET版本：.NET 7
预期行为：我的目标是打印WPF UI Datagrid“ReportGrid”或窗口“Main”。打印代码只是转换/重新调整UI以适应一个“字母”页面。Oxyplot应该调整大小并打印。
实际行为：一旦UI被打印，你可以看到UI右侧的按钮被打印，但Oxyplot是空白的，没有打印。我有另一个应用程序使用.NET Framework 4.8而不是.NET 7。使用相同的打印代码，UI打印工作正常。这似乎是使用.NET 7的Oxyplot库的兼容性问题，我不知道如何解决这个问题，或者有解决办法吗？

<Window x:Class="OxyPlotPrintTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:OxyPlotPrintTest"
    xmlns:oxy="http://oxyplot.org/wpf"
    Title="MainWindow" Height="800" Width="1280"
    Name="Main">

<Grid Name="ReportGrid">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="5*"/>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>

    <oxy:PlotView x:Name="plot"/>

    <StackPanel Grid.Column="1">
        <Button  Content="Add Data" Click="Button_Click_1" Height="150"/>
        <Button Content="Print" Click="Button_Click" Height="150"/>
    </StackPanel>

</Grid>
</Window>



 public partial class MainWindow : Window
{

 public PlotModel MyModel { get; private set; }

 public MainWindow()
 {
     MyModel = new PlotModel { Title = "Example 1" };
     MyModel.Series.Add(new FunctionSeries(Math.Cos, 0, 10, 0.1, "cos(x)"));
     
 }

 private void Button_Click(object sender, RoutedEventArgs e)
 {
     Visual visual = ReportGrid as Visual;
     Print(visual);
 }

 private void Print(Visual v)
 {

     System.Windows.FrameworkElement e = v as System.Windows.FrameworkElement;

     if (e == null)
         return;

     PrintDialog pd = new PrintDialog();
     pd.PrintTicket.PageOrientation = System.Printing.PageOrientation.Landscape;
     if (pd.ShowDialog() == true)
     {
         //store original scale
         Transform originalScale = e.LayoutTransform;
         //get selected printer capabilities
         System.Printing.PrintCapabilities capabilities = pd.PrintQueue.GetPrintCapabilities(pd.PrintTicket);

         //get scale of the print wrt to screen of WPF visual
         double scale = Math.Min(capabilities.PageImageableArea.ExtentWidth / e.ActualWidth, capabilities.PageImageableArea.ExtentHeight /
                        e.ActualHeight);

         //Transform the Visual to scale
         e.LayoutTransform = new ScaleTransform(scale, scale);

         //get the size of the printer page
         System.Windows.Size sz = new System.Windows.Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);

         //update the layout of the visual to the printer page size.
         e.Measure(sz);
         e.Arrange(new System.Windows.Rect(new System.Windows.Point(capabilities.PageImageableArea.OriginWidth, capabilities.PageImageableArea.OriginHeight), sz));

         //now print the visual to printer to fit on the one page.
         pd.PrintVisual(v, "My Print");

         //apply the original transform.
         e.LayoutTransform = originalScale;
     }
 }

 private void Button_Click_1(object sender, RoutedEventArgs e)
 {
     plot.Model = MyModel;
 }
}

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x1c 0d1x的数据