Getting data from the server to the client?

Getting data from the server to the client?

• Mike Woods

  Thank you for the reply,
  
  I think I should be a little more specific:  The server makes an instance of a local object and it updates and maintains this object.  The client then creates a remote object (on the server) that would like to get data from the server's local object.  These objects are in the same namespace but they do not have any relation between themselves.  eg. One object doesn't know that the other exists!
  
  I can call each other's static methods because they are in the same namespace but I can't use each other's member objects (which contain the data!!)
  
  In regards to the singleton, I looked into this a bit and it seems to be used to share data across clients and I only have 1 client..  I am planning on more research into this shortly.  I will let you all know what I come up with.
  
  I would love some input on this matter.  A link to an example or explanation would be great.
  
  Thank you
  
  

• Gombly

  Hi .

  I think you can solve the problem without any server architecture changes simple by using the AppDomains SetData when you createing the object Foo and getData when accesing the object foo via the client activated object Bar

  Distef

   

   

   

  
  

• Laurentiu Cristofor

  Hey,
  If you go back to remoting basics, there are multiple modes of remoting - Singlecall, Singleton.
  
  I assume you are using Singleclass objects. In this case, the members are not shared. But you might consider using singleton remoting which will allow you to share the members.
  
  Maybe it solves the problem. I am not too sure if it will because I did remoting long time back.
  
  Anyways, this is the line that you need to think on.
  

• Roland Weiss

  Okay,

  I get your problem. Your server creates an object Foo that it uses to store some data.

  Your client requests an object Bar that needs to get access to the data in Foo.

  If the server only makes one Foo, you should use the Singleton Pattern for Foo that is (in VB.net)

  <serializable()>
  public class foo
    implements IFoo

  private shared m_Instance as foo=new foo()
  public shared readonly property instance as foo

  get

  return m_Instance

  end get

  end property
  private sub new()
  'do any initialization here
  end sub
  ' you can add any public methods or whatever here.

  end class

  The singleton pattern ensures that only one instance of the foo class will ever exist. That instance can be accessed with a Shared (static) property. Any class can get the one instance of the foo that needs it.

  Now your bar can say

  public shared method getFoo() as IFOO

  return Foo.getInstance()

  end method

  
  
  

• Jomo Fisher MSFT

  These forums have been down for a day or two so I have posted this question on experts-exchange.com in the programming section under the title ".Net Remoting c# Getting data from server to client"
  
  This link might work http://www.experts-exchange.com/Programming/Q_21663804.html
  
  I would greatly appreciate any comments on this matter.
  
  Thanks
  
  

• goelectric

  I am marking this as the answer but ivolved and distef01 have very interesting comments that I will look into. Thanks!
  
  I have a deadline approaching so I implemented a not-so-elegant solution.  Basically I am chaining events between the client and the server and sending the data as an arguement to the events.  This allows communication but I can't use ref params or return values,  but I guess it is "loosely coupled" which is good.  The lack of return values is a bummer because I have to send a message, one way, which I handle and then trigger another one way message to be sent back.
  
  This is how I did it:  Server creates object A which is implemented in library.  Client creates object A which is implemented in library.  Client creates object B which inherits from a different object (C) implemented in library.  Client ties event from object A to delegate in object C.  The event from A is handled by a function in C which calls another function in C which is abstract, BUT implemented on the client in object B.
  
  Soooo, Server fires event in A which is caught by C which then gets data to B.  It is a little tricky to code but it works fine.  Now, you have to code the whole thing in reverse to send data back.
  
  
• Getting data from the server to the client?