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  • C#四种深拷贝方法

    C#四种深拷贝方法

        //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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  • 原文地址:https://www.cnblogs.com/grj001/p/12225156.html
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