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GeneralRe: Reading the contents of a file into an array Pin
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sitebuilderLuc Pattyn24-May-12 12:08 
AnswerRe: Reading the contents of a file into an array Pin
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GeneralRe: Reading the contents of a file into an array Pin
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AnswerRe: Reading the contents of a file into an array Pin
Luc Pattyn23-May-12 13:56
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GeneralRe: Reading the contents of a file into an array Pin
GeorgieMPorgie23-May-12 15:48
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AnswerRe: Reading the contents of a file into an array Pin
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GeneralRe: Reading the contents of a file into an array Pin
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QuestionVB Remoting - How do you get the server to pass value to client? Pin
Cutha22-May-12 19:57
Cutha22-May-12 19:57 
Hi,

Thanks for taking the time to read my post. I have spent lots of time reading other threads on here and everywhere else I could find and could not find a solution to my issue.

What I am trying to accomplish is to have two way communication between a service and a (single - for now) windows gui interface. I have found some basic examples on the web on how to pass a string to the server and playing around with it I was able to pass a Serializable class to the server and using functions get a class back from the server.

What I don't understand and can't figure out is how to get the server (service) to send an update to a client without the client requesting it, like an event. I found a server/client chat program that this works on but it is too complicated for me to follow and figure out how to do it.

Using the below example I changed the server into a Windows Form Application and then in the CommunicationService class I created a reference to the server form and called a public sub I had defined on it to bring the passed string into it. Although that works it is ugly and I am sure it is not the correct way to do it. How would I make more like a typical even driven system?

Below is an example I found on the net and I started with this to try and figure out how to accomplish my goals. What do I need to change or add to make this work the way I want it to?

Client:
VB
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Ipc
Public Class Form1

    Private Sub cmdSend_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSend.Click
        Dim ipcCh As New IpcChannel("myClient")
        ChannelServices.RegisterChannel(ipcCh, False)

        Dim obj As SharedInterfaces.ICommunicationService = _
          DirectCast(Activator.GetObject(GetType(SharedInterfaces.ICommunicationService), _
          "ipc://IPChannelName/SreeniRemoteObj"), SharedInterfaces.ICommunicationService)
        obj.SaySomething(txtText.Text)

        ChannelServices.UnregisterChannel(ipcCh)
    End Sub

End Class


Server - CommunicationService Class:
VB
Public Class CommunicationService
    Inherits MarshalByRefObject
    Implements SharedInterfaces.ICommunicationService

    
    Public Sub SaySomething(ByVal text As String) Implements SharedInterfaces.ICommunicationService.SaySomething
        Console.WriteLine("The client said : " & text)
    End Sub
End Class


Server - Main:
VB
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
Imports System.Runtime.Remoting.Channels.Ipc
 
Module Main
    Sub Main()
        Dim ipcCh As IpcChannel
        ipcCh = New IpcChannel("IPChannelName")

        ChannelServices.RegisterChannel(ipcCh, False)
        RemotingConfiguration.RegisterWellKnownServiceType( _
             GetType(CommunicationService), "SreeniRemoteObj", _
                           WellKnownObjectMode.Singleton)

        Console.WriteLine("Press ENTER to quit")
        Console.ReadLine()
    End Sub
End Module


SharedInterface:
VB
Public Interface ICommunicationService
    Sub SaySomething(ByVal text As String)
End Interface


Thanks for your time Smile | :)

Seamus
VB.Net 2005

AnswerRe: VB Remoting - How do you get the server to pass value to client? Pin
Bernhard Hiller23-May-12 4:14
Bernhard Hiller23-May-12 4:14 
GeneralRe: VB Remoting - How do you get the server to pass value to client? Pin
Cutha24-May-12 14:57
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QuestionCrystal Report 8.5 Connectivity(Parameterised or data as per record set) with Oracle using VB6 Pin
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QuestionRe: Crystal Report 8.5 Connectivity(Parameterised or data as per record set) with Oracle using VB6 Pin
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AnswerRe: Crystal Report 8.5 Connectivity(Parameterised or data as per record set) with Oracle using VB6 Pin
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GeneralRe: Crystal Report 8.5 Connectivity(Parameterised or data as per record set) with Oracle using VB6 Pin
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GeneralRe: Crystal Report 8.5 Connectivity(Parameterised or data as per record set) with Oracle using VB6 Pin
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QuestionCannot connect to SQL in VB6 COM DLL called from C# Pin
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QuestionGet 1st dimension values of a 2-dimensional array into 1-dimensional array Pin
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AnswerRe: Get 1st dimension values of a 2-dimensional array into 1-dimensional array Pin
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GeneralRe: Get 1st dimension values of a 2-dimensional array into 1-dimensional array Pin
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QuestionWeb Browser without IE 7 dependencies Pin
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AnswerRe: Web Browser without IE 7 dependencies Pin
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QuestionRemote Debugging in Visual Basic 6.0 Pin
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