C#四種深拷貝方法
阿新 • • 發佈:2020-12-24
//四種深拷貝方法 public static T DeepCopyByReflect<T>(T obj) { //如果是字串或值型別則直接返回 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); //反序列化成物件 retval = bf.Deserialize(ms); ms.Close(); } return (T)retval; } //需要silverlight支援 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; }