C#四种深拷贝方法(转载)

时间:2019-10-09
本文章向大家介绍C#四种深拷贝方法(转载),主要包括C#四种深拷贝方法(转载)使用实例、应用技巧、基本知识点总结和需要注意事项,具有一定的参考价值,需要的朋友可以参考一下。

原文地址:https://www.cnblogs.com/profession/p/6222489.html

//四种深拷贝方法
        public static T DeepCopyByReflect<T>(T obj)
        {
            //如果是字符串或值类型则直接返回
            if (obj is string || obj.GetType().IsValueType) return obj;

            object retval = Activator.CreateInstance(obj.GetType());
            FieldInfo[] fields = obj.GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
            foreach (FieldInfo field in fields)
            {
                try { field.SetValue(retval, DeepCopyByReflect(field.GetValue(obj))); }
                catch { }
            }
            return (T)retval;
        }

        public static T DeepCopyByXml<T>(T obj)
        {
            object retval;
            using (MemoryStream ms = new MemoryStream())
            {
                XmlSerializer xml = new XmlSerializer(typeof(T));
                xml.Serialize(ms, obj);
                ms.Seek(0, SeekOrigin.Begin);
                retval = xml.Deserialize(ms);
                ms.Close();
            }
            return (T)retval;
        }

        public static T DeepCopyByBin<T>(T obj)
        {
            object retval;
            using (MemoryStream ms = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                //序列化成流
                bf.Serialize(ms, obj);
                ms.Seek(0, SeekOrigin.Begin);
                //反序列化成对象
                retval = bf.Deserialize(ms);
                ms.Close();
            }
            return (T)retval;
        }

        //需要silverlight支持
        public static T DeepCopy<T>(T obj)
        {
            object retval;
            using (MemoryStream ms = new MemoryStream())
            {
                DataContractSerializer ser = new DataContractSerializer(typeof(T));
                ser.WriteObject(ms, obj);
                ms.Seek(0, SeekOrigin.Begin);
                retval = ser.ReadObject(ms);
                ms.Close();
            }
            return (T)retval;
        }

 

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