bmp转二进制：

FileStream fs = File.OpenRead(filepath); //filepath文件路径   Byte[] tempBuff = new Byte[fs.Length];   fs.Read(tempBuff, 0, tempBuff.Length);

二进制还原bmp

BitmapImage BI = new BitmapImage();   BI.BeginInit();   BI.StreamSource = new MemoryStream(bufPic);  //bufPic是图片二进制，byte类型 BI.EndInit();  image_emp.Source = BI;//image_emp是图片控件