C# WPF 保存WriteableBitmap图像

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 /// <summary> /// C# WPF 保存WriteableBitmap图像 /// </summary> /// <param name="wtbBmp"></param> /// void SaveXXX(WriteableBitmap wtbBmp) { if (wtbBmp == null) { return; } try { RenderTargetBitmap rtbitmap = new RenderTargetBitmap(wtbBmp.PixelWidth, wtbBmp.PixelHeight, wtbBmp.DpiX, wtbBmp.DpiY, PixelFormats.Default); DrawingVisual drawingVisual = new DrawingVisual(); using (var dc = drawingVisual.RenderOpen()) { dc.DrawImage(wtbBmp, new Rect(0, 0, wtbBmp.Width, wtbBmp.Height)); } rtbitmap.Render(drawingVisual); JpegBitmapEncoder bitmapEncoder = new JpegBitmapEncoder(); bitmapEncoder.Frames.Add(BitmapFrame.Create(rtbitmap)); string strDir = @"D:/XXX/"; string strpath = strDir + DateTime.Now.ToString("yyyyMMddfff") + ".jpg"; if (!Directory.Exists(strDir)) { Directory.CreateDirectory(strDir); } if (!File.Exists(strpath)) { bitmapEncoder.Save(File.OpenWrite(strpath)); } } catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.ToString()); } }









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