如何两个对象数据比对

 public partial class ModelStatusDictionary<T> where T : new()
    {
        static readonly DynamicMethod<T> _dynamicMethod = new DynamicMethod<T>();

        /// <summary>
        /// 判断指定特性的属性
        /// </summary>
        /// <param name="obj">对象</param>
        /// <param name="NonStance">是否获取基类的属性</param>
        /// <param name="NonProperty">排除的属性</param>
        /// <returns></returns>
        public static (bool state, string message) ModelVerified(T obj, bool NonStance = true, ICollection<string> NonProperty = null)
        {
            bool isEmpty = true;

            string msge = string.Empty;

            var ps = typeof(T).GetProperties();
            if (!NonStance)
                ps = typeof(T).GetProperties(BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance);
            if (NonProperty != null)
                ps = ps.Where(x => !NonProperty.Contains(x.Name)).ToArray();

            var vModel = (from p in ps
                          where p.GetCustomAttribute<DisplayNameAttribute>(true) != null
                          select new
                          {
                              name = p.Name,
                              dname = p.GetCustomAttribute<DisplayNameAttribute>(true).DisplayName,
                              velue = _dynamicMethod.GetValue(obj, p.Name),

                          }).Distinct().ToList();
            var fiel = vModel.Where(x => !Isfield(x.velue)).ToList();
            if (fiel.Count > 0)
            {
                isEmpty = false;
                msge = $"{string.Join(",", fiel.Select(x => x.dname).ToList())},Required fields cannot be empty!";
            }
            return (isEmpty, msge);
        }
        /// <summary>
        /// 两个类型一样的对象做比较
        /// </summary>
        /// <param name="model">A</param>
        /// <param name="modelData">B</param>
        public static (bool state, List<ModelEqualDictionary> dictionary) ModelEquals(T lastModel, T newModel)
        {
            bool isEquals = true;
            var ps = typeof(T).GetProperties();
            var _last = GetObject(ps, lastModel);// (from p in ps
            var _new = GetObject(ps, newModel);
            var fields = _new.Except(_last).Where(x => !string.IsNullOrWhiteSpace(x.dname)).Select(x => new ModelEqualDictionary() { DisplayName = x.dname, LostValue = _last.Where(y => y.name == x.name).FirstOrDefault().value, NewValue = x.value }).ToList();
            if (fields != null)
                if (fields.Any())
                    isEquals = false;
            return (isEquals, fields);
        }

        static IEnumerable<dynamic> GetObject(PropertyInfo[] property, object model) 
        {
            if (model == null)
            {
                model = new T();
            }
            var dy = (from p in property
                      where p.GetCustomAttribute<DisplayNameAttribute>(true) != null
                      select new
                      {
                          name = p.Name,
                          dname = p.GetCustomAttribute<DisplayNameAttribute>(true).DisplayName,
                          value = GetModelValue(model, p),
                      });
            return dy;
        }
        /// <summary>
        /// 两个类型一样的对象做比较
        /// </summary>
        /// <param name="model">A</param>
        /// <param name="modelData">B</param>
        /// <param name="noProperty">C</param>
        public static (bool state, List<ModelEqualDictionary> dictionary) ModelEqual(T lastModel, T newModel,bool nonProperty = false,ICollection<string> NonProperty = null)
        {
            bool isEquals = true;
            var ps = typeof(T).GetProperties();
            if (NonProperty != null)
            {
                ps = ps.Where(x => !NonProperty.Contains(x.Name)).ToArray();
            }        
            var _last = nonProperty ? GetNonPropertyModel(ps,lastModel): GetModel(ps, lastModel);
            var _new = nonProperty ? GetNonPropertyModel(ps, newModel) : GetModel(ps, newModel);
            var fields = _new.Except(_last).Select(x => new ModelEqualDictionary() { DisplayName = x.dname, LostValue = _last.Where(y => y.name == x.name).FirstOrDefault().value, NewValue = x.value }).ToList();
            if (fields != null)
                if (fields.Any())
                    isEquals = false;
            return (isEquals, fields);
        }

        static IEnumerable<dynamic> GetNonPropertyModel(PropertyInfo[] property, object model)
        {
            var a = property.Where(p => p.GetCustomAttribute<IsRequiredAttribute>(true) != null).ToList();
            var dy = (from p in property
                      where p.GetCustomAttribute<IsRequiredAttribute>(true) != null
                      select new
                      {
                          name = p.Name,
                          dname = p.GetCustomAttribute<IsRequiredAttribute>(true).IsRequired,
                          value = GetModelValue(model, p),
                      });
            return dy;
        }

        static IEnumerable<dynamic> GetModel(PropertyInfo[] property, object model)
        {
            var a = property.Where(p => p.GetCustomAttribute<IsRequiredAttribute>(true) != null).ToList();
            var dy = (from p in property
                      where p.GetCustomAttribute<IsRequiredAttribute>(true) != null
                      select new
                      {
                          name = p.Name,
                          dname = p.GetCustomAttribute<IsRequiredAttribute>(true).IsRequired,
                          value = GetModelValue(model, p),
                      });
            return dy;
        }
        static object GetModelValue(object obj, PropertyInfo property)
        {
            object value = string.Empty;
            if (getPropertyType(property.PropertyType) == typeof(Nullable))
            {
                var nextObj = obj.GetType().GetProperty(property.Name).GetValue(obj, null);
                if (property.PropertyType.BaseType.Name == "Enum")
                {
                    value = nextObj;
                }
                else if (nextObj != null)
                {
                    if (getPropertyType(nextObj.GetType()) == typeof(DateTime))
                    {
                        value = nextObj;
                    }
                    else
                    {
                        var ps = nextObj.GetType().GetProperties();
                        var thisObj = GetObject(ps, nextObj);
                        value = string.Join(",", thisObj ?? thisObj.Select(x => x.value).ToList());
                    }
                }
            }
            else
            {
                value = obj.GetType().GetProperty(property.Name).GetValue(obj, null);
            }
            return value;
        }

        static bool Isfield(object value)
        {
            if (value == null) return false;

            var val = value.GetType().ToString();
            switch (val)
            {
                case "System.Boolean":
                    return value == null ? false : true;
                case "System.Byte":
                    return value == null ? false : true;
                case "System.SByte":
                    return value == null ? false : true;
                case "System.Char":
                    return string.IsNullOrWhiteSpace(value.ToString()) ? false : true;
                case "System.Decimal":
                    return value == null ? false : true;
                case "System.Double":
                    return value == null ? false : true;
                case "System.Single":
                    return value == null ? false : true;
                case "System.Int32":
                    return value == null ? false : true;
                case "System.UInt32":
                    return value == null ? false : true;
                case "System.Int64":
                    return value == null ? false : true;
                case "System.UInt64":
                    return value == null ? false : true;
                case "System.Object":
                    return value == null ? false : true;
                case "System.Int16":
                    return value == null ? false : true;
                case "System.UInt16":
                    return value == null ? false : true;
                case "System.String":
                    return string.IsNullOrWhiteSpace(value.ToString()) ? false : true;
                case "System.DateTime.Date":
                    return value == null ? false : true;
                case "System.DateTime":
                    return value == null ? false : true;
                case "System.Guid":
                    return value == null ? false : true;
                default:
                    return true;
            }



        }

        static Type getPropertyType(Type obj)
        {
            if (obj == null) return typeof(DBNull);
            var val = obj.ToString();
            switch (val)
            {
                case "System.Boolean":
                    return typeof(Boolean);
                case "System.Byte":
                    return typeof(Byte);
                case "System.SByte":
                    return typeof(SByte);
                case "System.Char":
                    return typeof(char);
                case "System.Decimal":
                    return typeof(Decimal);
                case "System.Double":
                    return typeof(Double);
                case "System.Single":
                    return typeof(Single);
                case "System.Int32":
                    return typeof(Int32);
                case "System.UInt32":
                    return typeof(UInt32);
                case "System.Int64":
                    return typeof(Int64);
                case "System.UInt64":
                    return typeof(UInt64);
                case "System.Object":
                    return typeof(Object);
                case "System.Int16":
                    return typeof(Int16);
                case "System.UInt16":
                    return typeof(UInt16);
                case "System.String":
                    return typeof(string);
                case "System.DateTime.Date":
                    return typeof(DateTime);
                case "System.DateTime":
                    return typeof(DateTime);
                case "System.Guid":
                    return typeof(Guid);
                case "System.Enum":
                    return typeof(Enum);
                default:
                    return typeof(Nullable);
            }
        }
    }
    public class ModelEqualDictionary
    {
        public string DisplayName { get; set; }
        public object LostValue { get; set; }
        public object NewValue { get; set; }
    }