DBEntityEntry类

    class Program
    {
        static void Main(string[] args)
        {
            using (var ctx = new Jason_TestEntities())
            {
                //数据加载到context
                wolf_example example = ctx.wolf_example.Find(20051);
                //编辑name 
                example.Name = "编辑名称";
                //获取实体对象的
                var entry = ctx.Entry(example);
                //获取实体信息，例如全名
                Console.WriteLine("Entity Name：{0}", entry.Entity.GetType().FullName);
                Console.WriteLine("Entity State：{0}",entry.State);
                Console.WriteLine("********属性值********");
                foreach (var propertyName in entry.CurrentValues.PropertyNames)
                {
                    Console.WriteLine("Property Name: {0}", propertyName);

                    //原始的值
                    var orgVal = entry.OriginalValues[propertyName];
                    Console.WriteLine("     Original Value: {0}", orgVal);

                    //现在的值
                    var curVal = entry.CurrentValues[propertyName];
                    Console.WriteLine("     Current Value: {0}", curVal);
                }         
                Console.ReadKey();
            }
        }
    }