Convert One class to another class

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I have a WPF client which calls WCF service, that service again calls another wcf service which is residing in another location (WPF --> WCF Service1(dummy) --> Wcf Service2 (Another location)). I can't directly call service 2 from WPF due to design, WPF client should not be exposed, so I am taking this route.

Now, Service 2 returns a data contract to service1 as response object. I have to convert that data contract in service 1 and send the response back to WPF client. I created same datacontract in service1 with exact same properties. Does any one know any way to convert the custom type, I thought of looping and assigning each property manually, but I believe there would be some better solution. Could any one suggest with some example available please.

Thanks in advance.

Posted 18-Oct-13 3:48am

sam3440

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Sergey Alexandrovich Kryukov · Accepted Answer · 2013-10-18T04:36:00

Solution 1

First of all, the need in "conversion" between class members (you do not "convert" types, you "convert" the instances) is a pretty sure sign of a flaw in the code design.

If two types are not related (one is not derived from another directly or indirectly) you cannot just make a cast between them. All you can do is to create a brand new instance of the target type and copy all data from source instance. Moreover, you may or may not need to deep-clone some data. Please see my past answer, by the way:
How to implement ICloneable for a List Class?[^].

For some syntactic sugar, you can develop a type conversion operator in one or another type. Please see:
http://msdn.microsoft.com/en-us/library/85w54y0a.aspx[^].

See also:
http://en.wikipedia.org/wiki/Deep_copy#Deep_copy[^],
http://en.wikipedia.org/wiki/Syntactic_sugar[^].

But first things first. I repeat, first thing would be to review your architecture and design of your data structures, it can be a big flaw.

—SA

Posted 18-Oct-13 4:36am

Sergey Alexandrovich Kryukov

Comments

sam3440 18-Oct-13 16:09pm

Can you suggest any Serializer which convert one class instance to another class instance.

Sergey Alexandrovich Kryukov 18-Oct-13 16:23pm

Why serializer? Anyway, if you need to use a serializer, it's better be Data Contract (and then you can achieve matching name and "automate" the process), as I demonstrated in my answer referenced above. But, as I say, this is ugly. You really want to review your architecture and data structures.
—SA

sam3440 18-Oct-13 16:29pm

I don't understand why this is ugly, because I don't want my client to call external service directly. So instead I am creating dummy service and making call with that service to external service (WPF --> WCF Service1(dummy) --> Wcf Service2 (Another location)). I looking for serializer because, WcfService 2 returns response object (class name: FormList) so I want to convert that response object in Service 1 and send it back to client. If I send the response directly, then I am indirectly exposing client to service2

Sergey Alexandrovich Kryukov 18-Oct-13 16:37pm

Well, and I don't understand why do you have unrelated classes with same or semantically close members. And you are telling me it can possibly may be not ugly? Well, well...
Anyway, I answered your question in full, will you accept it formally (green "Accept" button)?
—SA

sam3440 18-Oct-13 16:56pm

thank you for the response

Sergey Alexandrovich Kryukov 18-Oct-13 17:05pm

Oh, you are very welcome.
Good luck, call again.
—SA