microsoft.public.dotnet.framework.remoting

Sunny

7/6/2004 3:46:00 PM

Hi,

not exactly remoting, but ...

if you need to transfer the assembly as a file, you have to look in WSE
(web service enhancements).

Sunny

In article <9e1fd687.0407060512.63705e1a@posting.google.com>,
dejan.skvorc@ck.htnet.hr says...
> Hello!
>
> I need to make an ASP.NET XML Web Service serving as an assembly
> container. Web Service loads the assembly from a given file, and
> returns that assembly to the caller.
> Since ASP.NET doesn''t support serialization of objects of type
> System.Reflection.Assembly into XML, I decided to use SoapFormatter or
> BinaryFormatter class to serialize assembly object into memory stream,
> then construct byte array from memory stream, and finaly return that
> byte array to the caller. It seems to work.
>
> Problem occurs on the client side when I''m trying to deserialize
> assembly object from memory stream. Client application throws
> following exception:
>
> An unhandled exception of type
> ''System.Runtime.Serialization.SerializationException'' occurred in
> mscorlib.dll
> Additional information: Insufficient state to deserialize the object.
> More information is needed.
>
>
>
> Here is sample of code:
>
>
> Web Service:
> [WebMethod]
> public byte[] GetAssembly( string assFile )
> {
> Assembly ass = Assembly.LoadFrom( assFile );
>
> IFormatter formatter = new SoapFormatter();
> MemoryStream stream = new MemoryStream();
> formatter.Serialize( stream, ass );
>
> return stream.ToArray();
> }
>
>
>
>
> Client application:
> [STAThread]
> static void Main(string[] args)
> {
> localhost.AssemblyContainer ac = new localhost.AssemblyContainer();
>
> byte[] assByteArray = ac.GetAssembly("someFile.dll");
>
> MemoryStream stream = new MemoryStream( assByteArray );
> IFormatter formater = new SoapFormatter();
> Assembly ass = formater.Deserialize( stream );
> }
>
>
>
> Here is the trace of memory stream, ie. serialized assembly object:
>
> <SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-inst...
> xmlns:xsd="http://www.w3.org/2001/XMLSc...
> xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encod...
> xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envel...
> xmlns:clr="http://schemas.microsoft.com/soap/encoding/clr...
> SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encod...>
> <SOAP-ENV:Body>
> <a1:UnitySerializationHolder id="ref-1"
> xmlns:a1="http://schemas.microsoft.com/clr/ns/System...
> <Data id="ref-2">SemaphoreResource, Version=1.0.1600.33496,
> Culture=neutral, PublicKeyToken=null</Data>
> <UnityType>6</UnityType>
> <AssemblyName href="#ref-2"/>
> </a1:UnitySerializationHolder>
> </SOAP-ENV:Body>
> </SOAP-ENV:Envelope>
>
>
>
>
>
> There is no difference if I use BinaryFormatter instead of
> SoapFormatter.
>
> Could anyone answer me why this doesn''t work?
> Does anyone know how to serialize assembly objects?
>
> Thanks in advance,
> Dejan
>