public class SerializeHelper    {        public static string XmlSerialize(List<CustomSearchEntity> obj)        {            XmlSerializer serializer = new XmlSerializer();            return serializer.Serialization(obj, typeof(List<CustomSearchEntity>));        }        public static List<CustomSearchEntity> XmlDeserialize(string xmlStr, Dictionary<string, string> historySearchKeyMapping)        {            List<CustomSearchEntity> list = new List<CustomSearchEntity>();            XmlSerializer serializer = new XmlSerializer();            byte[] array = Encoding.UTF8.GetBytes(xmlStr);            MemoryStream stream = new MemoryStream(array);            list = (List<CustomSearchEntity>)serializer.Deserialize(stream, typeof(List<CustomSearchEntity>));            list.ForEach(item =>                {                    if (historySearchKeyMapping.Keys.Contains(item.CustomSearchCategory))                    {                        item.CustomSearchCategory = historySearchKeyMapping.FirstOrDefault(p => p.Key == item.CustomSearchCategory).Value;                    }                });            return list;        }    }    public class DictionarySerializeHelper    {        public static string SerializeDictionary(Dictionary<string, string> dataitems)        {            List<DataItem> tempdataitems = new List<DataItem>(dataitems.Count);            foreach (string key in dataitems.Keys)            {                tempdataitems.Add(new DataItem(key, dataitems[key].ToString()));            }            XmlSerializer xs = new XmlSerializer();            return xs.Serialization(tempdataitems, typeof(List<DataItem>));        }        //Proj_10969;XAB-3422;Ken        public static Dictionary<string, string> DeserializeDictionary(string RawData, Dictionary<string, string> historySearchKeyMapping)        {            Dictionary<string, string> myDictionary = new Dictionary<string, string>();            XmlSerializer xs = new XmlSerializer();            byte[] array = Encoding.UTF8.GetBytes(RawData);            MemoryStream stream = new MemoryStream(array);            List<DataItem> templist = (List<DataItem>)xs.Deserialize(stream, typeof(List<DataItem>));            foreach (DataItem di in templist)            {                if (historySearchKeyMapping.Keys.Contains(di.Key))                {                    myDictionary.Add(historySearchKeyMapping.FirstOrDefault(p => p.Key == di.Key).Value, di.Value);                }                else                {                    myDictionary.Add(di.Key, di.Value);                }            }            return myDictionary;        }    }    public class DataItem    {        public DataItem()        {        }        public string Key;        public string Value;        public DataItem(string key, string value)        {            Key = key;            Value = http://www.mamicode.com/value;>