Re: Copy Class to Another Class - Cast Problem - C# Discussion Boards

13-Sep-09 3:12

I have two class;

public class AkdPerson
{
public int PersonID { get; set; }
public string PersonName { get; set; }
}

public class XPOPerson
{
public int PersonID { get; set; }
public string PersonName { get; set; }
}

How can I deep copy AkdPerson to XPOPerson, and XPOPerson to AkdPerson.

Actually I write DeepCopy metod, like this;

public static T DeepCopy<T>(T obj)
{
object result = null;
using (var ms = new MemoryStream())
{
var formatter = new BinaryFormatter();
formatter.Serialize(ms, obj);
ms.Position = 0;
result = (T)formatter.Deserialize(ms);
ms.Close();
}
return (T)result;
}

But I can't conver to AkdPerson to XPOPerson.
I GET ERROR - IMPLICITY CONVERT
AkdPerson akdPerson = new AkdPerson();
akdPerson.PersonID = 1;
akdPerson.PersonName = "Joe";
XPOPerson xpoPerson = DeepCopy(akdPerson);

N a v a n e e t h13-Sep-09 3:25

N a v a n e e t h

13-Sep-09 3:25

Why don't you create an interface and both classes implement this interface. So you can cast.

Navaneeth

How to use google | Ask smart questions

dataminers13-Sep-09 3:50

13-Sep-09 3:50

If I write

IPerson xpoPerson = DeepCopy(akdPerson);

but if I write

AkdPerson xpoPerson = DeepCopy(akdPerson);

not work. And I dont want to any drive metod, because these classes autogenerated. And contain different attributes, like [Key] for OR/M, [DataContract] for WCF etc...

Any idea??

N a v a n e e t h13-Sep-09 17:49

N a v a n e e t h

13-Sep-09 17:49

You can use reflection and copy the values from source to target for all the matching members. You should do something like,

1) DeepCopy method should take two types, source and target and return the target type
2) Get all fields including private fields from source.
3) Look for the same field name in target.
4) Assign source field value to target field value.
5) Continue until you finish all members.

Here is a generic DeepCopy implementation.

TSource Clone<TSource>(TSource source)
{
    TSource cloned = default(TSource);
    using (var stream = new MemoryStream())
    {
        BinaryFormatter formatter = new BinaryFormatter();
        formatter.Serialize(stream, source);
        stream.Position = 0;
        cloned = (TSource)formatter.Deserialize(stream);
    }
    return cloned;
}

TTarget DeepCopy<TSource,TTarget>(TSource source) where TTarget: new()
{
    // cloning the source
    TSource cloned = Clone(source);

    Type targetType = typeof(TTarget);
    TTarget target = new TTarget();

    BindingFlags memberSearchFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic;
    BindingFlags fieldSearchFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.GetField;

    MemberInfo[] targetMembers = targetType.GetMembers(fieldSearchFlags);

    foreach (MemberInfo sourceMember in typeof(TSource).GetMembers(memberSearchFlags))
    {
        if(sourceMember.MemberType == MemberTypes.Field)
        {
            FieldInfo sourceField = (FieldInfo) sourceMember;
            FieldInfo targetField = (FieldInfo) targetMembers.SingleOrDefault(m => m.Name == sourceField.Name);

            if (targetField != null)
                targetField.SetValue(target, sourceField.GetValue(source));
        }
    }
    return target;
}

Use this like.

AkdPerson akd = new AkdPerson() { PersonID = 10, PersonName = "Chuck Norris" };
XPOPerson xpo = DeepCopy<AkdPerson,XPOPerson>(akd);

Note : This will copy only the members whose name matches. This will leave all other members uninitialized and you should take care about initializing them before you use them.

Smile | :)

Navaneeth

How to use google | Ask smart questions

dataminers14-Sep-09 23:33

14-Sep-09 23:33

Thanks...

Eddy Vluggen13-Sep-09 3:42

Eddy Vluggen

13-Sep-09 3:42

Create a base-class called "Person" and derive both classes from it Smile | :)

dataminers13-Sep-09 3:51

13-Sep-09 3:51

If I write

Person xpoPerson = DeepCopy(akdPerson);

but if I write

AkdPerson xpoPerson = DeepCopy(akdPerson);

not work. And I dont want to any drive metod, because these classes autogenerated. And contain different attributes, like [Key] for OR/M, [DataContract] for WCF etc...

Any idea??

Eddy Vluggen13-Sep-09 3:54

Eddy Vluggen

13-Sep-09 3:54

Yup, use reflection to determine what properties to copy Smile | :)

I are Troll Smile | :)

dataminers13-Sep-09 4:01

13-Sep-09 4:01

How can I following class for my class;
I GET ERROR

public object Copy(Type source, object sourceToCopy, Type destination)
{
XmlSerializer serializer = new XmlSerializer(source);
MemoryStream memoryStream = new MemoryStream();

XmlSerializerNamespaces nameSpacesList = new XmlSerializerNamespaces();
nameSpacesList.Add("", "");

serializer.Serialize(memoryStream, sourceToCopy, nameSpacesList);

byte[] byteArr = memoryStream.ToArray();
ASCIIEncoding encoder = new ASCIIEncoding();
string xmlString = encoder.GetString(byteArr);

ASCIIEncoding newEncoder = new ASCIIEncoding();
byte[] newByteArr = newEncoder.GetBytes(xmlString);
MemoryStream newMemoryStream = new MemoryStream(newByteArr);

XmlSerializer deSer = new XmlSerializer(destination);

object deserializedObject = deSer.Deserialize(newMemoryStream);

return deserializedObject;
}

J4amieC13-Sep-09 4:53

J4amieC

13-Sep-09 4:53

Are you just trying things randomly until one works?

J4amieC13-Sep-09 4:55

J4amieC

13-Sep-09 4:55

There is a more fundamental question here; why are you trying to "copy" one of these things to another?

If both Person classes have the same properties, they should probably derive from the same class or interface, meaning any reference to the concrete XPOPerson or AkdPerson is irrelevant.

What is it you are trying to achive? That would enable us to get a better answer for you.

The remote certificate is invalid according to the validation procedure.

PIEBALDconsult13-Sep-09 5:10

PIEBALDconsult

13-Sep-09 5:10

Yeah, some base class is a good idea. Or consider writing converters -- look into the implicit and explicit operators.

khosnur13-Sep-09 2:17

pop3 secure mail download using C#

13-Sep-09 2:17

When i send mail above error occurred.
would anyone say:

code is below:

MailAddress SendFrom = new MailAddress("test@nibssolutions.net");

MailAddress SendTo = new MailAddress("rudro_aiub@yahoo.com");
MailMessage myMessage = new MailMessage(SendFrom, SendTo);

myMessage.Subject = "Subject";
myMessage.Body = "Body";

SmtpClient _smtpClient = new SmtpClient("mail.nibssolutions.net", 587);

_smtpClient.EnableSsl = true;
_smtpClient.Credentials = new System.Net.NetworkCredential("test@nibssolutions.net", "********");

_smtpClient.Send(myMessage);
//}
MessageBox.Show("Mail Sent...");

khosnur13-Sep-09 0:51

13-Sep-09 0:51

i download insecure pop3 mail. But i can not download secure mail like gmail.
would you help me?

Thanks in advance

Shafik

Richard MacCutchan13-Sep-09 1:31

Richard MacCutchan

13-Sep-09 1:31

khosnur wrote:
i can not download secure mail like gmail.

Without a better description of your problem it's impossible to offer any advice. What exactly do you mean by this? Is it something to do with your internet connection, its speed, your PC, ... ?

khosnur13-Sep-09 2:22

13-Sep-09 2:22

thanks for ur reply.

i would like to tell u that i can download programmatically(C#) in secure po3 mail. but when i download secure pop3 mail like when i download gmail's mail then i can not would u help me how? i am developing a software like ms outlook

Richard MacCutchan13-Sep-09 3:18

Richard MacCutchan

13-Sep-09 3:18

khosnur wrote:
when i download secure pop3 mail like when i download gmail's mail then i can not

What does this mean? You may as well say "when I try to drive my car it won't work"!

dan!sh 13-Sep-09 1:42

dan!sh

13-Sep-09 1:42

See this[^] or this[^].

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

khosnur13-Sep-09 2:28

13-Sep-09 2:28

thank u very much for ur reply.

first link : they use a third party library but they dont upload but in code they call the method.

2nd link: they also use third party dll but the wanna sell.

i searching not that kind stupid help.

would tell me any idea? i can download insecure pop mail.but i can not download secure pop mail like gmail's mail.

plz help me.

thanks in advance