获取最高质量的图像/截图C# wpf

RenderTargetBitmap renderTargetBitmap = new RenderTargetBitmap((int)width, (int)height, 96, 96, PixelFormats.Pbgra32);
renderTargetBitmap.Render(yourVisualElement); // 替换为要截图的Visual对象
PngBitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(renderTargetBitmap));
using (FileStream file = new FileStream("screenshot.png", FileMode.Create))
{
    encoder.Save(file);
}

using System.Drawing;
using System.Windows.Forms;

Rectangle screenBounds = Screen.PrimaryScreen.Bounds;
Bitmap screenshot = new Bitmap(screenBounds.Width, screenBounds.Height);
using (Graphics graphics = Graphics.FromImage(screenshot))
{
    graphics.CopyFromScreen(screenBounds.X, screenBounds.Y, 0, 0, screenBounds.Size);
}
screenshot.Save("screenshot.png", ImageFormat.Png);