WPF Image控件 Source: Byte[] ,BitmapImage 相互转换

来源:转载


文件转为byte[]

FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read);byte[] desBytes = new byte[fs.Length];fs.Read(desBytes, 0, desBytes.Length);fs.Close();

byte[]转换为BitmapImage:

public static BitmapImage ByteArrayToBitmapImage(byte[] byteArray) { BitmapImage bmp = null; try { bmp = new BitmapImage(); bmp.BeginInit(); bmp.StreamSource = new MemoryStream(byteArray); bmp.EndInit(); } catch { bmp = null; } return bmp; }

BitmapImage转换为byte[]:

public static byte[] BitmapImageToByteArray(BitmapImage bmp) { byte[] byteArray = null; try { Stream sMarket = bmp.StreamSource; if (sMarket != null && sMarket.Length > 0) { //很重要,因为Position经常位于Stream的末尾,导致下面读取到的长度为0。 sMarket.Position = 0; using (BinaryReader br = new BinaryReader(sMarket)) { byteArray = br.ReadBytes((int)sMarket.Length); } } } catch { //other exception handling } return byteArray; } WriteableBitmap wb = new WriteableBitmap(img.Source as BitmapSource);//将Image对象转换为WriteableBitmap byte[] b = Convert.FromBase64String(GetBase64Image(wb));//得到byte数组

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