你好:)我在克隆包含 winForm 中的其他对象和列表的对象时遇到问题。 我想克隆类型为结构的对象 下面提供的类 首先，我尝试过Shallow Clone
public Structure Clone()
{
return this.MemberwiseClone() as Structure;
}
认为它不起作用所以我搜索了https://stackoverflow.com/并且我做了一个深刻的克隆
Deep cloning objects 还有这个 How do you do a deep copy of an object in .NET (C# specifically)?
public static T DeepClone<T>(T obj)
{
using (var ms = new MemoryStream())
{
var formatter = new BinaryFormatter();
formatter.Serialize(ms, obj);
ms.Position = 0;
return (T) formatter.Deserialize(ms);
}
}
我遇到的问题是我正在拍摄对象的备份副本
var backup=DeepClone<Structure>(this.sched); //sched is Structure Object
然后更改this.sched备份更改：（
[Serializable]
public class Sub
{
string name;
int studentsNumber;
int unassaignedStudent;
public Sub(string name, int number)
{
this.name = name;
this.studentsNumber = number;
this.unassaignedStudent = number;
}
public Subject()
{
this.name = "";
this.studentsNumber = 0;
this.unassaignedStudent = 0;
}
public bool Assigne(int count)
{
//stuff
}
public Sub Clone()
{
return this.MemberwiseClone() as Sub;
}
}
[Serializable]
class Room
{
string name;
int studentsNumber;
int full;
private int freeSeats;
List<Sub> subjects;
/// <summary>
/// the list of subjects
/// </summary>
internal List<Sub> Subjects
{
get { return subjects; }
set { subjects = value; }
}
Dictionary<Subject, int> variations;
public Room(string name, int number)
{
this.name = name;
this.studentsNumber = number;
this.full = 0;
this.subjects = new List<Subject>();
this.variations = new Dictionary<Subject, int>();
this.freeSeats = number;
}
public Room(int number)
{
this.studentsNumber = number;
this.full = 0;
this.subjects = new List<Subject>();
this.variations = new Dictionary<Subject, int>();
this.freeSeats = number;
}
public Room()
{
this.name = "R" + count.ToString();
count++;
this.studentsNumber = 0;
this.full = 0;
this.subjects = new List<Sub>();
this.variation= new Dictionary<Sub, int>();
this.freeSeats = 0;
}
public bool addSubject(Sub sbj)
{
//also stuff
}
public bool addPartialSubject(Sub sbj)
{
//stuff
// return false;
}
public Room Clone()
{
return this.MemberwiseClone() as Room;
}
}
[Serializable]
class Period
{
List<Room> rooms;
int conflicts;
List<Sub> subjects;
internal List<Sub> Subjects
{
get { return subjects; }
set { subjects = value; }
}
/// <summary>
/// Create an instance of class Period
/// </summary>
/// <param name="rooms">the rooms in this Period</param>
public Period(List<Room> rooms)
{
this.conflicts = 0;
this.rooms = rooms;
subjects = new List<Subject>();
fillSubjects(ref rooms, ref subjects);
}
public Period()
{
this.conflicts = 0;
this.rooms = null;
subjects = new List<Subt>();
freeSeats = 0;
}
/// <summary>
/// Fill the subjects in the rooms to the list of subjects
/// </summary>
/// <param name="rooms">referance to the list of the rooms</param>
/// <param name="subjects">referance to the list of the subjects</param>
private void fillSubjects(ref List<Room> rooms, ref List<Sub> subjects)
{
foreach (var room in rooms)
{
foreach (var subject in room.Subjects)
{
if (!subjects.Exists(s => s.Name == subject.Name))
subjects.Add(subject);
}
}
}
/// <summary>
/// Adds the given subject to the period if there is a place in any room
/// </summary>
/// <param name="s">the subject to add</param>
/// <returns>true if there is space for this subject and added, otherwise false</returns>
public bool AddSubject(Sub s)
{
foreach (var room in rooms)
{
if (room.addSubject(s))
{
//stuff
}
else
if (room.addPartialSubject(s))
{
//stuff
}
}
return false;
}
private int CalculateConflictions(Sub s)
{
//also a lot of stuff
}
}
[Serializable]
class Structure:IDisposable
{
int days;
/// <summary>
/// the number of days in the Schedual
/// </summary>
public int Days
{
get { return days; }
set { days = value; }
}
int periods;
Period[,] schedualArray;
List<Room> rooms;
internal List<Room> Rooms
{
get { return rooms; }
set { rooms = value; }
}
/// <summary>
/// Creates an instance of the Structure object
/// </summary>
/// <param name="rooms">a list of the rooms in the Schedual</param>
public Structure(int days, int periods,List<Room> rooms)
{
this.days = days;
this.periods = periods;
this.rooms=rooms;
this.schedualArray = new Period[days, periods];
this.subjectCount = 0;
for (int i = 0; i < days; i++)
{
for (int j = 0; j < periods; j++)
{
schedualArray[i, j] = new Period(CloneList(ref rooms)); //here i cloned the list to be in the safe side and it didn't work also
}
}
}
public Structure()
{
this.days = 0;
this.totalEval = Int32.MaxValue;
this.periods = 0;
this.rooms = null;
this.subjectCount = 0;
this.schedualArray = null;
}
internal bool AddSubject(Sub subject, int day, int period)
{
//add the subject into inner lists (room)
}
public void PrintStruct()
{
for (int i = 0; i < days; i++)
{
for (int j = 0; j < periods; j++)
{
foreach (var subject in schedualArray[i, j].Subjects)
{
Console.Write("\t\t");
}
Console.Write("\t\t");
}
Console.WriteLine();
}
}
public Structure Clone()
{
return this.MemberwiseClone() as Structure;
}
public List<Room> CloneList(ref List<Room> rooms)
{
var lst = new List<Room>();
foreach (var room in rooms)
{
lst.Add(DeepClone<Room>(room));
}
return lst;
}
internal void RemoveSubject(Sub subject)
{
//..................
}
#region IDisposable Members
public void Dispose()
{
GC.Collect(g, GCCollectionMode.Forced);
}
#endregion
}
我现在还不知道克隆过程的细节是什么，但是我的要求是用对象中的连续对象和对象的hirarachy克隆整个对象以及完成的项目。列表不仅指向参考 请任何人帮助我，我真的迷路了:(，提前感谢所有有兴趣帮助我的人）。 Yaser
使用方法@WiiMaxx 时，编辑
Structure backup=XamlClone(this.sched);
private Structure XamlClone(Structure s)
{
//First Step
// create a XAML string
string stCopie = XamlWriter.Save(s);
//Secound Step
// convert him back to an Object of YourTyp
return XamlReader.Load(XmlReader.Create(new StringReader(stCopie))) as Structure;
}
但内部period[,]被克隆为null
能帮助我 @WiiMaxx
修改2.0
我还检查了这篇关于3种方法深度克隆的文章，我想我的代码中有循环引用，这就是为什么这对我不起作用的原因
http://blog.nuclex-games.com/mono-dotnet/fast-deep-cloning/
结束修改
答案 0 :(得分：2)
好的，现在应该真的有效 （我也删除了我的旧解决方案，因为它完全不符合您的需求）
public class Sub: ICloneable
{
struct datenStruct
{
internal int studentsNumber;
internal int unassaignedStudent;
internal string name;
}
private datenStruct USE;
int studentsNumber;
public string Name
{
get { return USE.name; }
set { USE.name = value; }
}
private Sub(datenStruct struc)
{
this.USE = struc;
}
public Sub(string name, int number)
{
this.USE = new datenStruct();
this.USE.name = name;
this.USE.studentsNumber = number;
this.USE.unassaignedStudent = number;
}
public bool Assigne(int count)
{
//stuff
return true;
}
public object Clone()
{
var copie = new datenStruct();
copie.name = USE.name;
copie.unassaignedStudent = USE.unassaignedStudent;
copie.studentsNumber = USE.studentsNumber;
return new Sub(copie);
}
}
public class Room: ICloneable
{
struct datenStruct
{
internal int studentsNumber;
internal int full;
internal string name;
internal int freeSeats;
internal List<Sub> subjects;
internal Dictionary<Sub, int> variations;
}
private datenStruct USE;
/// <summary>
/// the list of subjects
/// </summary>
internal List<Sub> Subjects
{
get { return USE.subjects; }
set { USE.subjects = value; }
}
public Room(string name, int number)
{
this.USE = new datenStruct();
this.USE.name = name;
this.USE.studentsNumber = number;
this.USE.full = 0;
this.USE.subjects = new List<Sub>();
this.USE.variations = new Dictionary<Sub, int>();
this.USE.freeSeats = number;
}
public Room(int number)
{
this.USE = new datenStruct();
this.USE.studentsNumber = number;
this.USE.full = 0;
this.USE.subjects = new List<Sub>();
this.USE.variations = new Dictionary<Sub, int>();
this.USE.freeSeats = number;
}
private Room(datenStruct struc)
{
USE = struc;
}
public bool addSubject(Sub sbj)
{
//also stuff
return false;
}
public bool addPartialSubject(Sub sbj)
{
//stuff
return false;
}
public object Clone()
{
var copie = new datenStruct();
copie.studentsNumber = USE.studentsNumber;
copie.full = USE.full;
copie.freeSeats = USE.freeSeats;
var SubListCopie = new List<Sub>();
foreach (Sub origSub in USE.subjects)
SubListCopie.Add((Sub)origSub.Clone());
copie.subjects = SubListCopie;
var SubDictCopie = new Dictionary<Sub, int>();
foreach (KeyValuePair<Sub, int> KvP in USE.variations)
SubDictCopie.Add((Sub)KvP.Key.Clone(),KvP.Value);
copie.variations = SubDictCopie;
return new Room(copie);
}
}
public class Period: ICloneable
{
struct datenStruct
{
internal List<Room> rooms;
internal List<Sub> subjects;
internal string name;
internal int conflicts;
}
private datenStruct USE;
internal List<Sub> Subjects
{
get { return USE.subjects; }
set { USE.subjects = value; }
}
/// <summary>
/// Create an instance of class Period
/// </summary>
/// <param name="rooms">the rooms in this Period</param>
public Period(List<Room> rooms)
{
this.USE.conflicts = 0;
this.USE.rooms = rooms;
this.USE.subjects = new List<Sub>();
fillSubjects(ref USE.rooms, ref USE.subjects);
}
private Period(datenStruct struc)
{
USE = struc;
}
/// <summary>
/// Fill the subjects in the rooms to the list of subjects
/// </summary>
/// <param name="rooms">referance to the list of the rooms</param>
/// <param name="subjects">referance to the list of the subjects</param>
private void fillSubjects(ref List<Room> rooms, ref List<Sub> subjects)
{
foreach (var room in rooms)
{
foreach (var subject in room.Subjects)
{
if (!subjects.Exists(s => s.Name == subject.Name))
subjects.Add(subject);
}
}
}
/// <summary>
/// Adds the given subject to the period if there is a place in any room
/// </summary>
/// <param name="s">the subject to add</param>
/// <returns>true if there is space for this subject and added, otherwise false</returns>
public bool AddSubject(Sub s)
{
foreach (var room in USE.rooms)
{
if (room.addSubject(s))
{
//stuff
}
else
if (room.addPartialSubject(s))
{
//stuff
}
}
return false;
}
private int CalculateConflictions(Sub s)
{
//also a lot of stuff
return 1;
}
public object Clone()
{
var copie = new datenStruct();
copie.name = USE.name;
copie.conflicts = USE.conflicts;
var RoomListCopie = new List<Room>();
foreach (Room origSub in USE.rooms)
RoomListCopie.Add((Room)origSub.Clone());
copie.rooms = RoomListCopie;
var SubListCopie = new List<Sub>();
foreach (Sub origSub in USE.subjects)
SubListCopie.Add((Sub)origSub.Clone());
copie.subjects = SubListCopie;
return new Period(copie);
}
}
public class Structure : IDisposable,ICloneable
{
struct datenStruct
{
internal int days;
internal int subjectCount;
internal int periods;
internal Period[,] schedualArray;
internal List<Room> rooms;
}
private datenStruct USE;
/// <summary>
/// the number of days in the Schedual
/// </summary>
public int Days
{
get { return USE.days; }
set { USE.days = value; }
}
internal List<Room> Rooms
{
get { return USE.rooms; }
set { USE.rooms = value; }
}
/// <summary>
/// Creates an instance of the Structure object
/// </summary>
/// <param name="rooms">a list of the rooms in the Schedual</param>
public Structure(int days, int periods, List<Room> rooms)
{
this.USE.days = days;
this.USE.periods = periods;
this.USE.rooms = rooms;
this.USE.schedualArray = new Period[days, periods];
this.USE.subjectCount = 0;
for (int i = 0; i < days; i++)
{
for (int j = 0; j < periods; j++)
{
USE.schedualArray[i, j] = new Period(CloneList(ref rooms)); //here i cloned the list to be in the safe side and it didn't work also
}
}
}
private Structure(datenStruct struc)
{
this.USE = struc;
}
internal bool AddSubject(Sub subject, int day, int period)
{
//add the subject into inner lists (room)
return true;
}
public void PrintStruct()
{
for (int i = 0; i < USE.days; i++)
{
for (int j = 0; j < USE.periods; j++)
{
foreach (var subject in USE.schedualArray[i, j].Subjects)
{
Console.Write("\t\t");
}
Console.Write("\t\t");
}
Console.WriteLine();
}
}
public List<Room> CloneList(ref List<Room> rooms)
{
var lst = new List<Room>();
foreach (var room in rooms)
{
lst.Add((Room)room.Clone());
}
return lst;
}
internal void RemoveSubject(Sub subject)
{
//..................
}
#region IDisposable Members
public void Dispose()
{
// GC.Collect(g, GCCollectionMode.Forced);
}
#endregion
public object Clone()
{
var copie =new datenStruct();
copie.days = USE.days;
copie.subjectCount = USE.subjectCount;
copie.periods = USE.periods;
var RoomListCopie = new List<Room>();
foreach (Room origSub in USE.rooms)
RoomListCopie.Add((Room)origSub.Clone());
copie.rooms = RoomListCopie;
copie.schedualArray = new Period[copie.days, copie.periods];
for (int i = 0; i < copie.days; i++)
{
for (int j = 0; j < copie.periods; j++)
{
copie.schedualArray[i, j] = new Period(CloneList(ref copie.rooms));
}
}
return new Structure(copie);
}
}
答案 1 :(得分：0)
我写了这段代码我觉得它解决了我的问题，但如果你有任何其他答案，请通知我。
private Structure SpecialClone(Structure s)
{
var rooms = Cloner.DeepClone<List<Room>>(s.Rooms);
var perds = Cloner.DeepClone<Period[,]>(s.SchedualArray);
var days = s.Days;
var periods = s.Periods;
return new Structure(days, periods, rooms, perds, s.SubjectCount);
}
我添加了一个重载到Structure Constructure来执行此操作：
public Structure(int days, int periods, List<Room> rooms, Period[,] _periods,int subjectCount)
{
this.days = days;
this.periods = periods;
this.rooms = rooms.DeepClone();
this.subjectCount = subjectCount;
this.schedualArray = _periods.Clone() as Period[,];
}