/// <summary>

     /// Image(支持 XML 序列化)

     /// </summary>

     [XmlRoot("XmlImage")]

     public class XmlImage : IXmlSerializable

     {

         public System.Drawing.Image Image { get; set; }

         #region 构造函数

         public XmlImage()

         { }

         protected XmlImage(SerializationInfo info, StreamingContext context)

         { }

         #endregion 构造函数

         #region IXmlSerializable Members

         public XmlSchema GetSchema() => null;

         /// <summary>

         ///     从对象的 XML 表示形式生成该对象(反序列化)

         /// </summary>

         /// <param name="xr"></param>

         public void ReadXml(XmlReader xr)

         {

             if (xr.IsEmptyElement)

                 return;

             xr.ReadToFollowing(nameof(XmlImage));

             Image = FromBase64String(xr.ReadElementContentAsString());

             xr.ReadEndElement();

         }

         /// <summary>

         ///     将对象转换为其 XML 表示形式(序列化)

         /// </summary>

         /// <param name="xw"></param>

         public void WriteXml(XmlWriter xw)

         {

             xw.WriteStartElement(nameof(XmlImage));

             xw.WriteValue(ToBase64String(Image, ImageFormat.Png));

             xw.WriteEndElement();

         }

         #endregion IXmlSerializable Members

         private static string ToBase64String(System.Drawing.Image img, ImageFormat format)

         {

             if (img != null)

             {

                 using (var ms = new MemoryStream())

                 {

                     img.Save(ms, format);

                     byte[] buffer = ms.ToArray();

                     return Convert.ToBase64String(buffer);

                 }

             }

             return string.Empty;

         }

         private static System.Drawing.Image FromBase64String(string base64Str)

         {

             System.Drawing.Image img = null;

             using (var ms = new MemoryStream())

             {

                 try

                 {

                     var buffer = Convert.FromBase64String(base64Str);

                     ms.Write(buffer, , buffer.Length);

                     img = System.Drawing.Image.FromStream(ms);

                 }

                 catch

                 {

                     // ignored

                 }

             }

             return img;

         }

     }