Re: Problem with serializing business object instead of core objec

Tech-Archive recommends: Fix windows errors by optimizing your registry

From: Alex (Alex_at_discussions.microsoft.com)
Date: 09/18/04

  • Next message: douluvme95630_at_yahoo.com: "scalability with Remoting" 
    Date: Sat, 18 Sep 2004 12:35:07 -0700

    OK, I still don't think I've solved this. Since I am marking the class as
    Serializable, this marshals by value which would mean they don't need to have
    a remote identity. If I derive from MarshalByRef, wouldn't I then have to
    insure the class does have a remote identity on the server? I don't want to
    do this since the server does not need to know the type of object I am
    passing and will, in fact, be passed a number of different object types which
    are just going to get stored in cache and then returned to the client when
    requested.

    I have a feeling I am misunderstanding something pretty fundamental with
    remoting, but not sure what it is. Thanks for bearing with me.

    Alex

    "Ken Kolda" wrote:

    > My guess is that you have defined the RemoteTest class twice -- once in your
    > server assembly and once in the client assembly. Since the assembly name is
    > part of the full name of a class (which is passed as part of the
    > serialization info), these type definitions will not be recognized as the
    > same, even if the namespaces and the class names are exactly the same in the
    > client and server assemblies. To solve this, put this class definition in a
    > separate assembly which will be shared by both client and server.
    >
    > That said, it looks like you must already be doing this to some degree since
    > your able to use the IApptikRemoteCache interface (which I assume is in a
    > separate assembly). So, if what I described above isn't the problem, let me
    > know.
    >
    > Ken
    >
    >
    > "Alex" <Alex@discussions.microsoft.com> wrote in message
    > news:C7DC2C7D-30D4-457B-95E4-418037C0FE7F@microsoft.com...
    > > I have created a simple remoting client-server setup where I am having
    > > problems when attempting to deal with business objects. If I run the
    > client
    > > and server, and pass in a standard object such as a string, integer, guid,
    > > etc., everything works fine. However, if I try to pass in a business
    > object
    > > that I have marked as serializable, I get the following error:
    > >
    > > Unable to find assembly '__codeyqhbdlhs, Version=0.0.0.0, Culture=neutral,
    > > PublicKeyToken=null'.
    > >
    > > I have marked the business object as serializable and to test, I created a
    > > simple business object that just has a couple of string fields. The error
    > > also appears to occur when I try to run deserialize or serialize directly
    > on
    > > an object instead of allowing the framework to handle the serialization so
    > > the problem seems to be serialization. The same error occurs whether I
    > use
    > > Binary or SOAP formatters. I am running my server as a windows app. The
    > > relevant code to activate remoting on the server is as follows:
    > >
    > > private void button1_Click(object sender, EventArgs e)
    > > {
    > > BinaryServerFormatterSinkProvider ServerProvider = new
    > > BinaryServerFormatterSinkProvider();
    > > TcpServerChannel tsc = new TcpServerChannel("TCPChannel",
    > 7777,
    > > ServerProvider);
    > > ChannelServices.RegisterChannel(tsc);
    > >
    > >
    > RemotingConfiguration.RegisterWellKnownServiceType(typeof(ApptikRemoteObject
    > ), "ApptikCache", WellKnownObjectMode.SingleCall);
    > >
    > > infobox.Items.Add("Initializing cache server initialized");
    > >
    > >
    > > stopped = false;
    > >
    > > }
    > >
    > > }
    > >
    > >
    > > The relevant client portion is run from an asp page and is as follows:
    > >
    > > Global.asax
    > > System.Runtime.Remoting.Channels.BinaryClientFormatterSinkProvider
    > > ClientProvider = new
    > > System.Runtime.Remoting.Channels.BinaryClientFormatterSinkProvider();
    > > System.Runtime.Remoting.Channels.Tcp.TcpClientChannel tsc = new
    > > System.Runtime.Remoting.Channels.Tcp.TcpClientChannel("TCPChannel",
    > > ClientProvider);
    > >
    > System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(tsc);
    > >
    > > appobject.aspx
    > >
    > > IApptikRemoteCache remoteobj =
    > > (IApptikRemoteCache)Activator.GetObject(typeof(IApptikRemoteCache),
    > > "tcp://localhost:7777/ApptikCache");
    > >
    > > RemoteTest findtestvalue = (RemoteTest)
    > > remoteobj.Find("RemoteTestTest11");
    > > if (findtestvalue == null)
    > > {
    > >
    > > HttpContext.Current.Trace.Write("Test not found");
    > > // if I pass a string in the next line instead of remotetest
    > object
    > > // then everything works fine
    > > RemoteTest test = new RemoteTest();
    > > remoteobj.Add("RemoteTestTest11", test, null);
    > > }
    > > else
    > > {
    > >
    > > HttpContext.Current.Trace.Write("Test " +
    > > findtestvalue.Test2.ToString());
    > >
    > > }
    > >
    > > The remote class that I am attempting to pass through is as follows:
    > >
    > > [Serializable]
    > > public class RemoteTest {
    > >
    > > private string test = string.Empty;
    > > private string test2 = string.Empty;
    > > public string Test2
    > > {
    > > get
    > > {
    > > return test2;
    > > }
    > >
    > > set
    > > {
    > > test2 = value;
    > > }
    > > }
    > >
    > >
    > > public RemoteTest()
    > > {
    > >
    > > test2 = "Palookaville";
    > >
    > > }
    > >
    > > }
    > >
    > >
    > >
    >
    >
    >

  • Next message: douluvme95630_at_yahoo.com: "scalability with Remoting"
    • Quantcast