[WPF] Control to Image

using System.IO; using System.Windows; using System.Windows.Media; using System.Windows.Media.Imaging; namespace WpfApp4 {     public class Function     {         /// <summary>         /// Grid를 Bitmap이미지로 변환         /// </summary>         /// <param name="grid">이미지 변환 할 Grid</param>         /// <param name="filePath">저장될 png 파일 경로</param>         /// <returns></returns>         public static void SaveControlToImage(FrameworkElement grid, string filePath)         {             Size size = new Size(grid.ActualWidth, grid.ActualHeight);             if (!size.IsEmpty)             {                 RenderTargetBitmap result = new RenderTargetBitmap((int)size.Width, (int)size.Height, 96, 96, PixelFormats.Pbgra32);                 DrawingVisual drawingvisual = new DrawingVisual();                 using (DrawingContext context = drawingvisual.RenderOpen())                 {                     context.DrawRectangle(new VisualBrush(grid), null, new Rect(new Point(), size));                     context.Close();                 }                 result.Render(drawingvisual);                 FileStream stream = new FileStream(filePath, FileMode.Create);                 PngBitmapEncoder encoder = new PngBitmapEncoder();                 encoder.Frames.Add(BitmapFrame.Create(result));                 encoder.Save(stream);                 stream.Close();             }         }     } }