扩展帮助类--Object

 public static partial class Extention
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        static Extention()
        {
            JsonSerializerSettings setting = new JsonSerializerSettings();
            JsonConvert.DefaultSettings = new Func<JsonSerializerSettings>(() =>
            {
                //日期类型默认格式化处理
                setting.DateFormatHandling = DateFormatHandling.MicrosoftDateFormat;
                setting.DateFormatString = "yyyy-MM-dd HH:mm:ss";
                return setting;
            });
        }

        /// <summary>
        /// 将一个object对象序列化，返回一个byte[]         
        /// </summary> 
        /// <param name="obj">能序列化的对象</param>
        /// <returns></returns> 
        public static byte[] ToBytes(this object obj)
        {
            using (MemoryStream ms = new MemoryStream())
            {
                IFormatter formatter = new BinaryFormatter();
                formatter.Serialize(ms, obj);
                return ms.GetBuffer();
            }
        }

        /// <summary>
        /// 判断是否为Null或者空
        /// </summary>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static bool IsNullOrEmpty(this object obj)
        {
            if (obj == null)
                return true;
            else
            {
                string objStr = obj.ToString();
                return string.IsNullOrEmpty(objStr);
            }
        }

        /// <summary>
        /// 将对象序列化成Json字符串
        /// </summary>
        /// <param name="obj">需要序列化的对象</param>
        /// <returns></returns>
        public static string ToJson(this object obj)
        {
            var serializerSettings = new JsonSerializerSettings();
            serializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
            return JsonConvert.SerializeObject(obj);
        }

        /// <summary>
        /// 实体类转json数据，速度快
        /// </summary>
        /// <param name="t">实体类</param>
        /// <returns></returns>
        public static string EntityToJson(this object t)
        {
            if (t == null)
                return null;
            string jsonStr = "";
            jsonStr += "{";
            PropertyInfo[] infos = t.GetType().GetProperties();
            for (int i = 0; i < infos.Length; i++)
            {
                jsonStr = jsonStr + "\"" + infos[i].Name + "\":\"" + infos[i].GetValue(t).ToString() + "\"";
                if (i != infos.Length - 1)
                    jsonStr += ",";
            }
            jsonStr += "}";
            return jsonStr;
        }

        /// <summary>
        /// 深复制
        /// </summary>
        /// <typeparam name="T">类型</typeparam>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static T DeepClone<T>(this T obj) where T : class
        {
            if (obj == null)
                return null;

            return obj.ToJson().ToObject<T>();
        }

        /// <summary>
        /// 改变实体类型
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="targetType">目标类型</param>
        /// <returns></returns>
        public static object ChangeType(this object obj, Type targetType)
        {
            return obj.ToJson().ToObject(targetType);
        }

        /// <summary>
        /// 改变实体类型
        /// </summary>
        /// <typeparam name="T">目标泛型</typeparam>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static T ChangeType<T>(this object obj)
        {
            return obj.ToJson().ToObject<T>();
        }

        /// <summary>
        /// 初始化时间默认值
        /// </summary>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static T InitDateTime<T>(this T obj) where T : class
        {
            obj.GetType().GetProperties().ForEach(aProperty =>
            {
                if (aProperty.PropertyType == typeof(DateTime))
                {
                    aProperty.SetValue(obj, DateTime.Now);
                }
            });

            return obj;
        }

        /// <summary>
        /// 将对象序列化为XML字符串
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="obj">对象</param>
        /// <returns></returns>
        public static string ToXmlStr<T>(this T obj)
        {
            var jsonStr = obj.ToJson();
            var xmlDoc = JsonConvert.DeserializeXmlNode(jsonStr);
            string xmlDocStr = xmlDoc.InnerXml;

            return xmlDocStr;
        }

        /// <summary>
        /// 将对象序列化为XML字符串
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <param name="obj">对象</param>
        /// <param name="rootNodeName">根节点名(建议设为xml)</param>
        /// <returns></returns>
        public static string ToXmlStr<T>(this T obj, string rootNodeName)
        {
            var jsonStr = obj.ToJson();
            var xmlDoc = JsonConvert.DeserializeXmlNode(jsonStr, rootNodeName);
            string xmlDocStr = xmlDoc.InnerXml;

            return xmlDocStr;
        }

        /// <summary>
        /// 获取某属性值
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="propertyName">属性名</param>
        /// <returns></returns>
        public static object GetPropertyValue(this object obj, string propertyName)
        {
            return obj.GetType().GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static).GetValue(obj);
        }

        /// <summary>
        /// 获取某属性值
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="propertyName">属性名</param>
        /// <param name="value">值</param>
        /// <returns></returns>
        public static void SetPropertyValue(this object obj, string propertyName, object value)
        {
            obj.GetType().GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static).SetValue(obj, value);
        }
        /// <summary>
        /// 获取枚举特性名
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string GetStateAttributeName(this object value)
        {
            Type type = value.GetType();
            var field = type.GetField(value.ToString());
            if (field != null)
            {
                Remark attribute = (Remark)field.GetCustomAttribute(typeof(Remark), true);
                return attribute.RemarkName;
            }
            else
            {
                return value.ToString();
            }
        }
        /// <summary>
        /// 遍历类字段以及字段值
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="t"></param>
        /// <returns></returns>
        public static DmModel getNameAndValue<T1, T2>(T1 t1, T2 t2)
        {

            System.Reflection.PropertyInfo[] properties1 = t1.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public);
            DmModel dmModel = new DmModel();
            foreach (System.Reflection.PropertyInfo item in properties1)
            {
                //t1属性值
                var t1_value = GetPropertyValue(t1, item.Name);
                //t2属性值
                var t2_value = GetPropertyValue(t2, item.Name);

                if (t1_value != t2_value)
                {
                    dmModel.Key = item.Name;
                    dmModel.Values = t2_value.ToString();
                }
            }
            return dmModel;
        }
    }