回读图像功能优化

CurveModule/Views/CurveRecallView.xaml.cs

@@ -24,5 +24,32 @@ namespace CurveModule.Views
         {
             InitializeComponent();
         }
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            try
+            {
+                DrawingVisual drawingVisual = new DrawingVisual();
+                using (DrawingContext context = drawingVisual.RenderOpen())
+                {
+                    VisualBrush brush = new VisualBrush(Chart) { Stretch = Stretch.None };
+                    context.DrawRectangle(brush, null, new Rect(0, 0, Chart.ActualWidth, Chart.ActualHeight));
+                    context.Close();
+                }
+                RenderTargetBitmap targetBitmap = new RenderTargetBitmap((int)Chart.ActualWidth, (int)Chart.ActualHeight, 96d, 96d, PixelFormats.Default);
+                targetBitmap.Render(drawingVisual);
+                PngBitmapEncoder saveEncoder = new PngBitmapEncoder();
+                saveEncoder.Frames.Add(BitmapFrame.Create(targetBitmap));
+                string tempFile = @$"D:\ACP\图片\{DateTime.Now:yyyyMMdd_HHmmss}.png";
+                System.IO.FileStream fs = System.IO.File.Open(tempFile, System.IO.FileMode.OpenOrCreate);
+                saveEncoder.Save(fs);
+                fs.Close();
+                MessageBox.Show($"导出图片成功");
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"导出图片失败：{ex.Message}");
+            }
+
+        }
     }
 }