How to serialize a C++ object through .Net Remoting

[benkial]

Below is a custom exception class that I created to be shared by my C+
+ and
C# code. It works fine till I need to pass the exception object
through Remoting: every time a FtException is raized in the Remoting
server side, the client got the following error (see below). Based on
my Google search, I did the best I can to have a constructor that
takes SerializationIn fo and StreamingContex t as input. But it seemed
that
client side still cannot get the constructor to deserialize
FtException object.
What did I do wrong???

Also, how do I write the construction (right now is just a printf
statemet :-) so that I can pass the _errMsg, and _errNo members and
recreate the object on the client side.

Thanks in advance,

Ben

=============== =============== =============== ===============
[Serializable]
public __gc class FtException : public System::Excepti on
{
public:
String *_errMsg;
int _errNo;

FtException(Sys tem::Runtime::S erialization::S erializationInf o __gc*
info,
System::Runtime ::Serialization ::StreamingCont ext __gc* context);
FtException(int errNo, String* errMsg);
System.Runtime. Serialization.S erializationExc eption: The constructor
to deserialize an object of type Ft.ServiceUtils .FtException was not
found.

Server stack trace:

at
System.Runtime. Serialization.O bjectManager.Co mpleteISerializ ableObject(Obje ct
obj, SerializationIn fo info, StreamingContex t context)
at
System.Runtime. Serialization.O bjectManager.Fi xupSpecialObjec t(ObjectHolder
holder)
at System.Runtime. Serialization.O bjectManager.Do Fixups()
at
System.Runtime. Serialization.F ormatters.Soap. ObjectReader.De serialize(Heade rHandler
handler, ISerParser serParser)
at
System.Runtime. Serialization.F ormatters.Soap. SoapFormatter.D eserialize(Stre am
serializationSt ream, HeaderHandler handler)
at
System.Runtime. Remoting.Channe ls.CoreChannel. DeserializeSoap ResponseMessage (Stream
inputStream, IMessage requestMsg, Header[] h, Boolean bStrictBinding)
at
System.Runtime. Remoting.Channe ls.SoapClientFo rmatterSink.Des erializeMessage (IMethodCallMes sage
mcm, ITransportHeade rs headers, Stream stream)
at
System.Runtime. Remoting.Channe ls.SoapClientFo rmatterSink.Syn cProcessMessage (IMessage
msg)

Exception rethrown at [0]:
at Ft.FTConsole.Op tionsDialog.tbP olicyServer_Key Up(Object sender,
KeyEventArgs e) in ....

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

be*****@gmail.c om wrote:

Below is a custom exception class that I created to be shared by my C+
+ and
C# code. It works fine till I need to pass the exception object
through Remoting: every time a FtException is raized in the Remoting
server side, the client got the following error (see below). Based on
my Google search, I did the best I can to have a constructor that
takes SerializationIn fo and StreamingContex t as input. But it seemed
that
client side still cannot get the constructor to deserialize
FtException object.
What did I do wrong???

Also, how do I write the construction (right now is just a printf
statemet :-) so that I can pass the _errMsg, and _errNo members and
recreate the object on the client side.

[Serializable]
public __gc class FtException : public System::Excepti on
{
public:
String *_errMsg;
int _errNo;

FtException(Sys tem::Runtime::S erialization::S erializationInf o __gc*
info,
System::Runtime ::Serialization ::StreamingCont ext __gc* context);
FtException(int errNo, String* errMsg);
System.Runtime. Serialization.S erializationExc eption: The constructor
to deserialize an object of type Ft.ServiceUtils .FtException was not
found.

I think you need a constructor with no arguments.

Arne

PS: This is a C# group.

[benkial]

On Jul 31, 5:47 pm, Arne Vajhøj <a...@vajhoej.d kwrote:

benk...@gmail.c om wrote:

Below is a custom exception class that I created to be shared by my C+
+ and
C# code. It works fine till I need to pass the exception object
through Remoting: every time a FtException is raized in the Remoting
server side, the client got the following error (see below). Based on
my Google search, I did the best I can to have a constructor that
takes SerializationIn fo and StreamingContex t as input. But it seemed
that
client side still cannot get the constructor to deserialize
FtException object.
What did I do wrong???

Also, how do I write the construction (right now is just a printf
statemet :-) so that I can pass the _errMsg, and _errNo members and
recreate the object on the client side.
[Serializable]
public __gc class FtException : public System::Excepti on
{
public:
String *_errMsg;
int _errNo;

FtException(Sys tem::Runtime::S erialization::S erializationInf o __gc*
info,
System::Runtime ::Serialization ::StreamingCont ext __gc* context);
FtException(int errNo, String* errMsg);

System.Runtime. Serialization.S erializationExc eption: The constructor
to deserialize an object of type Ft.ServiceUtils .FtException was not
found.

I think you need a constructor with no arguments.

Arne

PS: This is a C# group.

Thanks for the reply. I added an constructor w/ no arguments
"FtException()" .
But the same error of
"System.Runtime .Serialization. SerializationEx ception" is
still there.

Ben

PS. I believe my question is still C# related. And I hope I am not the
only
C# developer that needs to struggle with the integration with an
existing
C++ library...

[Samuel R. Neff]

If you look at your assembly in a decompiler (Reflector) is the
constructor there? Seems like an odd problem, the only thing that
causes that error is missing the SerializationIn fo, StreamingContex t
constructor but you have it declared.

Not that it matters for this problem, but the serialization
constructor is usually declared protected.

While this may be related to c# integration, sounds like a weird
c++/cli problem and you may have better luck in a different group.

HTH,

Sam

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On Tue, 31 Jul 2007 15:05:31 -0700, be*****@gmail.c om wrote:

>============== =============== =============== =============== =
[Serializable]
public __gc class FtException : public System::Excepti on
{
public:
String *_errMsg;
int _errNo;

FtException(Sys tem::Runtime::S erialization::S erializationInf o __gc*
info,
System::Runtime ::Serialization ::StreamingCont ext __gc* context);
FtException(int errNo, String* errMsg);
System.Runtime .Serialization. SerializationEx ception: The constructor
to deserialize an object of type Ft.ServiceUtils .FtException was not
found.

Server stack trace:

at
System.Runtime .Serialization. ObjectManager.C ompleteISeriali zableObject(Obj ect
obj, SerializationIn fo info, StreamingContex t context)