bitmap bitmapImage byte[] 互相转化

素颜马尾好姑娘i 2022-12-27 02:18 177阅读 0赞

// Bitmap --> BitmapImage
            public static BitmapImage BitmapToBitmapImage(Bitmap bitmap)
            { 
                using (MemoryStream stream = new MemoryStream())
                { 
                    bitmap.Save(stream, ImageFormat.Png);
                    stream.Position = 0;
                    BitmapImage result = new BitmapImage();
                    result.BeginInit();
                    result.CacheOption = BitmapCacheOption.OnLoad;
                    result.StreamSource = stream;
                    result.EndInit();
                    result.Freeze();
                    return result;
                }
            }
    
            // BitmapImage --> Bitmap
            public static Bitmap BitmapImageToBitmap(BitmapImage bitmapImage)
            { 
                using (MemoryStream outStream = new MemoryStream())
                { 
                    BitmapEncoder enc = new BmpBitmapEncoder();
                    enc.Frames.Add(BitmapFrame.Create(bitmapImage));
                    enc.Save(outStream);
                    Bitmap bitmap = new Bitmap(outStream);
                    return new Bitmap(bitmap);
                }
            }
            public static byte[] BitmapToBytes(Bitmap Bitmap)
            { 
                MemoryStream ms = null;
                try
                { 
                    ms = new MemoryStream();
                    Bitmap.Save(ms, ImageFormat.Gif);
                    byte[] byteImage = new Byte[ms.Length];
                    byteImage = ms.ToArray();
                    return byteImage;
                }
                catch (ArgumentNullException ex)
                { 
                    throw ex;
                }
                finally
                { 
                    ms.Close();
                }
            }