Re: third post: Marshal by value remoting
From: Sam Santiago (ssantiago_at_n0spam-SoftiTechture.com)
Date: 12/14/04
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Date: Mon, 13 Dec 2004 17:21:47 -0800
I am not clear on the question you are asking. With a MBV you don't have a
remote object. You simply have an object that can be transported across
process boundaries. The return value of the MBR is the MBV object, so you
simply treat it like any other object. For example:
myMBV = myMBR.GetMBVObject()
myMBV.InvokeAMethod()
myMBV.GetPropertyValue
Thanks,
Sam
-- _______________________________ Sam Santiago ssantiago@n0spam-SoftiTechture.com http://www.SoftiTechture.com _______________________________ "ALI-R" <newbie@microsoft.com> wrote in message news:eK7OooX4EHA.1976@TK2MSFTNGP09.phx.gbl... > ok,you are completely right,the object has been created on the server and > has been serialized to the client (and I shouldn't instanciate the object > in > client again).So far so good.It is exactly what I want.I'd like to know > how > to get a hold of that object.they say that Remoting framework deserialize > the object ,but where is it? how can call a method of the local copy of my > remote object . > > Thank you both for monitoring this thread. > > "Sam Santiago" <ssantiago@n0spam-SoftiTechture.com> wrote in message > news:%23TbXTkX4EHA.4008@TK2MSFTNGP15.phx.gbl... >> Wrong. What we're are saying is that a marshal-by-value object is >> simply >> an object that is serializable. Where you create this object and how > you >> use it is going to determine if remoting is involved or not. If you >> declare a variable locally of that MBV type and then call an MBR that >> returns a MBV to you, then you have involved remoting. The MBV was > created >> on the server and returned to you. The instantiation of that object >> occurred on the server. If you instantiate the object locally and use it > as >> a parameter to a MBR object then remoting is involved again. The object > was >> instantiated on the client and sent to the server as a parameter to a >> MBR. >> If you instantiate the object locally and use it locally without >> involving >> an MBR then remoting is not involved, it's simply a serializable object. >> >> Thanks, >> >> Sam >> >> -- >> _______________________________ >> Sam Santiago >> ssantiago@n0spam-SoftiTechture.com >> http://www.SoftiTechture.com >> _______________________________ >> "ALI-R" <newbie@microsoft.com> wrote in message >> news:%23SrzzbX4EHA.2196@TK2MSFTNGP14.phx.gbl... >> > So you guys mean that I am doing something which is not >> > possible(getting > a >> > remote object by value and not by refernece) right?? >> > >> > "Sam Santiago" <ssantiago@n0spam-SoftiTechture.com> wrote in message >> > news:OFNPROX4EHA.604@TK2MSFTNGP10.phx.gbl... >> >> Marshal-by-value is simply an object that is serializable. If you >> >> want >> > this >> >> object created on the server, then it must be sent to the client. In >> > order >> >> to initiate a server action you must invoke a method on a remoted >> >> object - >> > a >> >> marshal by reference objects. Marshal-by-value objects are either >> >> parameters or return values of remoted methods. It is a valid object >> > class, >> >> so there is nothing stopping you from instantiated an instance of this >> > class >> >> on your client. Here's another example on GotDotNet: >> >> >> >> http://samples.gotdotnet.com/quickstart/howto/ >> >> >> >> >> >> Thanks, >> >> >> >> Sam >> >> >> >> -- >> >> _______________________________ >> >> Sam Santiago >> >> ssantiago@n0spam-SoftiTechture.com >> >> http://www.SoftiTechture.com >> >> _______________________________ >> >> "ALI-R" <newbie@microsoft.com> wrote in message >> >> news:%23A8$69W4EHA.3380@TK2MSFTNGP09.phx.gbl... >> >> >I tried no using GetObject but it makes the instance of my local copy > of >> >> >the >> >> > object and no matter wether the server host application is up or >> >> > down >> > ,it >> >> > creates the instance from local object. >> >> > So you mean no body can use Marshal By Value alone without using >> >> > MarshalByRefObject,I don't think so because these are classified as > two >> >> > comletely differnet methods to work remotely so there should be a >> >> > workaround >> >> > this.I want to know how to use object in client ,,it seems that on > the >> >> > server there is no problem cause I said I can get the soap > description >> > of >> >> > it.there should be a way in client to get the copied object. I think >> > there >> >> > is someting wrong in my client config file. >> >> > >> >> > Thanks for your help,, >> >> > "Ken Kolda" <ken.kolda@elliemae-nospamplease.com> wrote in message >> >> > news:OCy3s3W4EHA.1404@TK2MSFTNGP11.phx.gbl... >> >> >> Although I've never tried this, I don't believe you can use >> >> >> GetObject() >> >> > with >> >> >> a non-MarshalByRef class. Keep in mind that the call to GetObject() >> >> > actually >> >> >> just creates a proxy. With marshal-by-value objects, there should >> >> >> be >> >> >> no >> >> >> proxy, so it makes sense this mechanism won't work. >> >> >> >> >> >> What you need to do is create a MarshalByRef object that you >> >> >> remote. >> > Then >> >> >> create a method on it, such as GetCompanyList(), which will return >> >> >> your >> >> >> serializable company list. >> >> >> >> >> >> Ken >> >> >> >> >> >> >> >> >> "ALI-R" <newbie@microsoft.com> wrote in message >> >> >> news:ed7v0nW4EHA.524@TK2MSFTNGP09.phx.gbl... >> >> >> > it is exactly what I do except I am trying to marshal an object >> >> >> > by >> >> >> > value >> >> >> to >> >> >> > client (not server) when I use >> >> >> > >> >> >> >> >> > >> > > cLst=(ListServer.CompanyList)Activator.GetObject(typeof(ListServer.CompanyLi >> >> >> > st),"tcp://magid1017:9000/ListServer") >> >> >> > >> >> >> > I get this error: >> >> >> > >> >> >> > Trying to create a proxy to an unbound type >> >> >> > >> >> >> > What is this error for? >> >> >> > >> >> >> > Thanks for you help >> >> >> > >> >> >> > "Sam Santiago" <ssantiago@n0spam-SoftiTechture.com> wrote in > message >> >> >> > news:uD81fPW4EHA.4092@TK2MSFTNGP14.phx.gbl... >> >> >> > > Here's an example from MS KB: >> >> >> > > >> >> >> > > How To Marshal an Object to a Remote Server by Value by Using >> > Visual >> >> >> Basic >> >> >> > > .NET >> >> >> > > http://support.microsoft.com/default.aspx?scid=kb;en-us;301116 >> >> >> > > >> >> >> > > Thanks, >> >> >> > > >> >> >> > > Sam >> >> >> > > >> >> >> > > -- >> >> >> > > _______________________________ >> >> >> > > Sam Santiago >> >> >> > > ssantiago@n0spam-SoftiTechture.com >> >> >> > > http://www.SoftiTechture.com >> >> >> > > _______________________________ >> >> >> > > "ALI-R" <newbie@microsoft.com> wrote in message >> >> >> > > news:OLODRsV4EHA.1188@tk2msftngp13.phx.gbl... >> >> >> > > >I have a remote object containg two classes ,one marked as >> >> >> > > >seriazable >> >> >> and >> >> >> > > > the other one has inherited MarshalByRefObject.I have my own >> >> >> > > > host >> >> >> > > > programme >> >> >> > > > which loads remote object on the server .On the client when I >> > work >> >> >> with >> >> >> > > > the >> >> >> > > > class which has inherited MarshalByRefObject,there is no > problem >> > at >> >> >> > > > all.but >> >> >> > > > the other class which has marked with [Serializable] seems to > be >> >> > goofy >> >> >> > > > since >> >> >> > > > wether the host is up or not ,when I try to use it ,,it uses > the >> >> > local >> >> >> > > > copy >> >> >> > > > of assemly in my computer (in client) and if I change the > class >> > to >> >> >> > inherit >> >> >> > > > MarshalByRefObject,it agian starts working.I am using config >> >> >> > > > file >> >> >> > > > in >> >> >> > > > client >> >> >> > > > and have to have a local copy of remote object referenced in > my >> >> >> > > > application. >> >> >> > > > >> >> >> > > > I would appreciate if somebody can solve this problem,I have >> >> >> > > > been >> >> >> > posting >> >> >> > > > several messages but there is no reply yet. >> >> >> > > > >> >> >> > > > Thanks, >> >> >> > > > ALI >> >> >> > > > >> >> >> > > > >> >> >> > > >> >> >> > > >> >> >> > >> >> >> > >> >> >> >> >> >> >> >> > >> >> > >> >> >> >> >> > >> > >> >> > >
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