Biegral Blog

 				/// <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());
            }
        }