Since upgrading to Visual Studio 2003 and using the .Net framework v1.1 I am recieving an error while trying to use the examples found in chapter 5 with events.

Additional information: Type System.DelegateSerializationHolder and the types derived from it (such as System.DelegateSerializationHolder) are not permitted to be deserialized at this security level.

The error occurs when trying to add the handler.

Any help on this subject would be greatly appreaciated.

Thank you,

Christopher P. Cooper

It's important for us to explain to our nation that life is important. It's not only life of babies, but it's life of children living in, you know, the dark dungeons of the Internet."— George W. Bush - Arlington Heights, Ill., Oct. 24, 2000

__________________
Vote Kerry/Edwards 2004

It\'s important for us to explain to our nation that life is important. It\'s not only life of babies, but it\'s life of children living in, you know, the dark dungeons of the Internet.\"— George W. Bush - Arlington Heights, Ill., Oct. 24, 2000

check this url
http://www.ingorammer.com/RemotingFAQ/Changes2003.html

Hello, I am get this trouble too. And I found answer on this question in discussion
http://www.thinkdotnet.com/default.a...ic&TopicID=149
This is more complete guide, but a simle instructions include in message of James Wu :
"Starting with .NET Framework v1.1, the remoting infrastructure doesn't automatically deserialize certain types on the server. You must set the server's deserialization level to Full to support automatic deserialization of all types that remoting supports in all situations.

For delegate callbacks working properly, the client's type information or metadata must be present on the server during run-time. Here I just copy the client assembly to the server root directory for convenience. A better solution for that would be creating an EventShim as described in Mike Woodring's sample page(http://staff.develop.com/woodring/dotnet/#RemoteEvents).

Here is the procedure:

Step 1 - Update the channel element in JobClient\JobClient.exe.config to:

channel ref="http" port="0"
serverProviders
formatter ref="binary" typeFilterLevel="Full" /
/serverProviders
clientProviders
formatter ref="binary" /
/clientProviders
/channel

Step 2 - Update the channel element in JobServer\JobServer.exe.config to:

channel ref="http" port="4000"
serverProviders
formatter ref="binary" typeFilterLevel="Full" /
/serverProviders
clientProviders
formatter ref="binary" /
/clientProviders
/channel

Step 3 - Copy JobClient\bin\Debug\JobClient.exe to JobServer\bin\Debug\ "

I am run this f$%@g example from Chapter 3 after changin configuration files and "Step 3". I am ready send my config files for you, if need.

Thank you for attention.

Best regards,

cyber soft

I too just encountered this problem and the replies helped, but no one ever posted exactly what you needed to do to fix this so I will:

Here's the new Confserv.vb:
============================
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp
Imports Conference

Module ConfServer

    Sub Main()
        Dim chan As TcpChannel
        Dim props As IDictionary = New Hashtable
        Dim serverProv As BinaryServerFormatterSinkProvider = New BinaryServerFormatterSinkProvider
        Dim clientProv As BinaryClientFormatterSinkProvider = New BinaryClientFormatterSinkProvider

        Console.WriteLine("Server started")

        serverProv.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilter Level.Full

        props("port") = 8086

        chan = New TcpChannel(props, clientProv, serverProv)
        ChannelServices.RegisterChannel(chan)

        RemotingConfiguration.RegisterWellKnownServiceType ( _
            GetType(Conference.Conference), "MyConference.rem", WellKnownObjectMode.Singleton)

        Console.ReadLine()

    End Sub
End Module

And the new ConfClient.vb:
==========================
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Tcp


Module ConfClient
    Sub Main()

        Dim commands As String
        Dim port As Integer
        Dim props As IDictionary = New Hashtable
        Dim chan As TcpChannel
        Dim serverProv As BinaryServerFormatterSinkProvider = New BinaryServerFormatterSinkProvider
        Dim clientProv As BinaryClientFormatterSinkProvider = New BinaryClientFormatterSinkProvider

        commands = Microsoft.VisualBasic.Command

        If commands.Length = 0 Then
            props("port") = 8088
        Else
            props("port") = CInt(commands)
        End If

        serverProv.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilter Level.Full
        chan = New TcpChannel(props, clientProv, serverProv)

        ChannelServices.RegisterChannel(chan)

        Dim attendee As New ConfAttendee.ConfAttendee
        attendee.Run()

    End Sub
End Module

Dear Sirs
Would you please send me the "Visual Basic .NET Remoting Handbook" source code. I can not find it from the wrox publisher, but I need it really. my email address are: [email protected] OR [email protected]
Thanks all of you!
LY HE from Beijing, China

LY HE: Please read:
http://p2p.wrox.com/topic.asp?TOPIC_ID=268
under the heading:
"What happened to the code downloads for the other Wrox books"

Jim Minatel
Acquisitions Director
Wiley Technology Publishing
WROX Press