Icon直接保存成ico文件会严重失真，可以保存为png格式。

 

但如果要转换到byte，直接使用Icon.ToBitmap().Save方法会出错，需要带一点参数。具体代码如下

 

public class IconHelper    {        /// 
        /// Byte转Icon        /// 
        ///         /// 
             public static Icon FromByte(byte[] buffer)        {            return Icon.FromHandle(new System.Drawing.Bitmap(new MemoryStream(buffer)).GetHicon());        }        /// 
        /// Icon转Byte        /// 
        ///         /// 
             public static byte[] ToByte(Icon icon)        {            Encoder myEncoder = Encoder.Quality;            EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 100);            EncoderParameters encoders = new EncoderParameters(1);            encoders.Param[0] = myEncoderParameter;            ImageCodecInfo myImageCodecInfo = GetEncoderInfo("image/png");            using (MemoryStream ms = new MemoryStream())            {                icon.ToBitmap().Save(ms, myImageCodecInfo, encoders);                return ms.GetBuffer();            }        }        private static ImageCodecInfo GetEncoderInfo(string mimeType)        {            int j;            ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();            for (j = 0; j < encoders.Length; ++j)            {                if (encoders[j].MimeType == mimeType)                    return encoders[j];            }            return null;        }    }