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.Reflecti on.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. SerializationEx ception' 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.LoadFr om( assFile );
IFormatter formatter = new SoapFormatter() ;
MemoryStream stream = new MemoryStream();
formatter.Seria lize( stream, ass );
return stream.ToArray( );
}
Client application:
[STAThread]
static void Main(string[] args)
{
localhost.Assem blyContainer ac = new localhost.Assem blyContainer();
byte[] assByteArray = ac.GetAssembly( "someFile.dll") ;
MemoryStream stream = new MemoryStream( assByteArray );
IFormatter formater = new SoapFormatter() ;
Assembly ass = formater.Deseri alize( stream );
}
Here is the trace of memory stream, ie. serialized assembly object:
<SOAP-ENV:Envelope xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http ://www.w3.org/2001/XMLSchema"
xmlns:SOAP-ENC="http://schemas.xmlsoap .org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap .org/soap/envelope/"
xmlns:clr="http ://schemas.microso ft.com/soap/encoding/clr/1.0"
SOAP-ENV:encodingSty le="http://schemas.xmlsoap .org/soap/encoding/">
<SOAP-ENV:Body>
<a1:UnitySerial izationHolder id="ref-1"
xmlns:a1="http://schemas.microso ft.com/clr/ns/System">
<Data id="ref-2">SemaphoreRes ource, Version=1.0.160 0.33496,
Culture=neutral , PublicKeyToken= null</Data>
<UnityType>6</UnityType>
<AssemblyName href="#ref-2"/>
</a1:UnitySeriali zationHolder>
</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
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.Reflecti on.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. SerializationEx ception' 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.LoadFr om( assFile );
IFormatter formatter = new SoapFormatter() ;
MemoryStream stream = new MemoryStream();
formatter.Seria lize( stream, ass );
return stream.ToArray( );
}
Client application:
[STAThread]
static void Main(string[] args)
{
localhost.Assem blyContainer ac = new localhost.Assem blyContainer();
byte[] assByteArray = ac.GetAssembly( "someFile.dll") ;
MemoryStream stream = new MemoryStream( assByteArray );
IFormatter formater = new SoapFormatter() ;
Assembly ass = formater.Deseri alize( stream );
}
Here is the trace of memory stream, ie. serialized assembly object:
<SOAP-ENV:Envelope xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http ://www.w3.org/2001/XMLSchema"
xmlns:SOAP-ENC="http://schemas.xmlsoap .org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap .org/soap/envelope/"
xmlns:clr="http ://schemas.microso ft.com/soap/encoding/clr/1.0"
SOAP-ENV:encodingSty le="http://schemas.xmlsoap .org/soap/encoding/">
<SOAP-ENV:Body>
<a1:UnitySerial izationHolder id="ref-1"
xmlns:a1="http://schemas.microso ft.com/clr/ns/System">
<Data id="ref-2">SemaphoreRes ource, Version=1.0.160 0.33496,
Culture=neutral , PublicKeyToken= null</Data>
<UnityType>6</UnityType>
<AssemblyName href="#ref-2"/>
</a1:UnitySeriali zationHolder>
</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
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