in a remoting application, i set a event in the host, and let the client to
book it, and in the host side i set the TypeFilterLevel to Full and open the
callback port in the client side, but told that these was an exception on the
invoked object.
can anyone tell my why? It is a very simple application just to test, and
here is the code, i am using vs2008, thanx in advaned.
----------server side----------------------
using System.Collecti ons.Generic;
using System.Linq;
using System.Text;
using System.Runtime. Remoting;
using System.Runtime. Remoting.Channe ls;
using System.Runtime. Remoting.Channe ls.Ipc;
using System.Runtime. Remoting.Channe ls.Tcp;
using System.Runtime. Serialization.F ormatters;
using System.IO;
using System.Collecti ons;
namespace RcServer
{
class Program
{
static void Main(string[] args)
{
IDictionary pros = new Hashtable();
pros["portName"] = "host";
BinaryServerFor matterSinkProvi der ss = new
BinaryServerFor matterSinkProvi der();
ss.TypeFilterLe vel = TypeFilterLevel .Full;
IChannel cnl = new IpcChannel(pros , new
BinaryClientFor matterSinkProvi der(), ss);
ChannelServices .RegisterChanne l(cnl, false);
RemotingConfigu ration.Register WellKnownServic eType(typeof(Ca t),
"cat", WellKnownObject Mode.Singleton) ;
Cat cat = new Cat();
Console.WriteLi ne("go");
Console.ReadLin e();
}
}
public class Cat : MarshalByRefObj ect
{
public event EventHandler OnScreaming;
public void Scream()
{
Console.WriteLi ne("i am wake");
if (this.OnScreami ng != null)
this.OnScreamin g(this,null);
}
}
}
----------------client side-------------------------
using System;
using System.Collecti ons.Generic;
using System.Linq;
using System.Text;
using System.Runtime. Remoting;
using System.Runtime. Remoting.Channe ls;
using System.Runtime. Remoting.Channe ls.Ipc;
using System.Runtime. Serialization.F ormatters;
using System.Collecti ons;
using RcServer;
namespace RcClient
{
class Program
{
static void Main(string[] args)
{
IChannel cnl = new IpcChannel("MyC allback");
ChannelServices .RegisterChanne l(cnl, false);
RemotingConfigu ration.Register WellKnownClient Type(typeof(Cat ),
@"ipc://host/cat");
Cat c = (Cat)Activator. CreateInstance( typeof(Cat));
Rat jy = new Rat();
jy.ThereIsaCat( c);
c.Scream();
}
}
[Serializable]
public class Rat:MarshalByRe fObject
{
public void ThereIsaCat(Cat cat)
{
cat.OnScreaming += new EventHandler(th is.cat_OnScream ing);
}
void cat_OnScreaming (object sender, EventArgs e)
{
Console.WriteLi ne("cat's awake, run quick!");
}
}
}
2  3513 
I find that using events is a PITA when using remoting. Rather, I would
define a callback interface that the client implements, and then make sure
that the class that implements it derives from MarshalByRefObj ect, and send
that to the server to call back onto when you want to fire an event. It's
much cleaner, and it works.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m
"fairyvoice " <fa********@dis cussions.micros oft.comwrote in message
news:46******** *************** ***********@mic rosoft.com...
in a remoting application, i set a event in the host, and let the client
to
book it, and in the host side i set the TypeFilterLevel to Full and open
the
callback port in the client side, but told that these was an exception on
the
invoked object.
can anyone tell my why? It is a very simple application just to test, and
here is the code, i am using vs2008, thanx in advaned.
----------server side----------------------
using System.Collecti ons.Generic;
using System.Linq;
using System.Text;
using System.Runtime. Remoting;
using System.Runtime. Remoting.Channe ls;
using System.Runtime. Remoting.Channe ls.Ipc;
using System.Runtime. Remoting.Channe ls.Tcp;
using System.Runtime. Serialization.F ormatters;
using System.IO;
using System.Collecti ons;
namespace RcServer
{
class Program
{
static void Main(string[] args)
{
IDictionary pros = new Hashtable();
pros["portName"] = "host";
BinaryServerFor matterSinkProvi der ss = new
BinaryServerFor matterSinkProvi der();
ss.TypeFilterLe vel = TypeFilterLevel .Full;
IChannel cnl = new IpcChannel(pros , new
BinaryClientFor matterSinkProvi der(), ss);
ChannelServices .RegisterChanne l(cnl, false);
RemotingConfigu ration.Register WellKnownServic eType(typeof(Ca t),
"cat", WellKnownObject Mode.Singleton) ;
Cat cat = new Cat();
Console.WriteLi ne("go");
Console.ReadLin e();
}
}
public class Cat : MarshalByRefObj ect
{
public event EventHandler OnScreaming;
public void Scream()
{
Console.WriteLi ne("i am wake");
if (this.OnScreami ng != null)
this.OnScreamin g(this,null);
}
}
}
----------------client side-------------------------
using System;
using System.Collecti ons.Generic;
using System.Linq;
using System.Text;
using System.Runtime. Remoting;
using System.Runtime. Remoting.Channe ls;
using System.Runtime. Remoting.Channe ls.Ipc;
using System.Runtime. Serialization.F ormatters;
using System.Collecti ons;
using RcServer;
namespace RcClient
{
class Program
{
static void Main(string[] args)
{
IChannel cnl = new IpcChannel("MyC allback");
ChannelServices .RegisterChanne l(cnl, false);
RemotingConfigu ration.Register WellKnownClient Type(typeof(Cat ),
@"ipc://host/cat");
Cat c = (Cat)Activator. CreateInstance( typeof(Cat));
Rat jy = new Rat();
jy.ThereIsaCat( c);
c.Scream();
}
}
[Serializable]
public class Rat:MarshalByRe fObject
{
public void ThereIsaCat(Cat cat)
{
cat.OnScreaming += new EventHandler(th is.cat_OnScream ing);
}
void cat_OnScreaming (object sender, EventArgs e)
{
Console.WriteLi ne("cat's awake, run quick!");
}
}
}
thanks Nicholas, when you said "callback interface" did you mean the one in
the asynchronous model, i am not very clear.
May you tell me more precisely or show me a few codes? thanx
"Nicholas Paldino [.NET/C# MVP]" wrote:
I find that using events is a PITA when using remoting. Rather, I would
define a callback interface that the client implements, and then make sure
that the class that implements it derives from MarshalByRefObj ect, and send
that to the server to call back onto when you want to fire an event. It's
much cleaner, and it works.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m
"fairyvoice " <fa********@dis cussions.micros oft.comwrote in message
news:46******** *************** ***********@mic rosoft.com...
in a remoting application, i set a event in the host, and let the client
to
book it, and in the host side i set the TypeFilterLevel to Full and open
the
callback port in the client side, but told that these was an exception on
the
invoked object.
can anyone tell my why? It is a very simple application just to test, and
here is the code, i am using vs2008, thanx in advaned.
----------server side----------------------
using System.Collecti ons.Generic;
using System.Linq;
using System.Text;
using System.Runtime. Remoting;
using System.Runtime. Remoting.Channe ls;
using System.Runtime. Remoting.Channe ls.Ipc;
using System.Runtime. Remoting.Channe ls.Tcp;
using System.Runtime. Serialization.F ormatters;
using System.IO;
using System.Collecti ons;
namespace RcServer
{
class Program
{
static void Main(string[] args)
{
IDictionary pros = new Hashtable();
pros["portName"] = "host";
BinaryServerFor matterSinkProvi der ss = new
BinaryServerFor matterSinkProvi der();
ss.TypeFilterLe vel = TypeFilterLevel .Full;
IChannel cnl = new IpcChannel(pros , new
BinaryClientFor matterSinkProvi der(), ss);
ChannelServices .RegisterChanne l(cnl, false);
RemotingConfigu ration.Register WellKnownServic eType(typeof(Ca t),
"cat", WellKnownObject Mode.Singleton) ;
Cat cat = new Cat();
Console.WriteLi ne("go");
Console.ReadLin e();
}
}
public class Cat : MarshalByRefObj ect
{
public event EventHandler OnScreaming;
public void Scream()
{
Console.WriteLi ne("i am wake");
if (this.OnScreami ng != null)
this.OnScreamin g(this,null);
}
}
}
----------------client side-------------------------
using System;
using System.Collecti ons.Generic;
using System.Linq;
using System.Text;
using System.Runtime. Remoting;
using System.Runtime. Remoting.Channe ls;
using System.Runtime. Remoting.Channe ls.Ipc;
using System.Runtime. Serialization.F ormatters;
using System.Collecti ons;
using RcServer;
namespace RcClient
{
class Program
{
static void Main(string[] args)
{
IChannel cnl = new IpcChannel("MyC allback");
ChannelServices .RegisterChanne l(cnl, false);
RemotingConfigu ration.Register WellKnownClient Type(typeof(Cat ),
@"ipc://host/cat");
Cat c = (Cat)Activator. CreateInstance( typeof(Cat));
Rat jy = new Rat();
jy.ThereIsaCat( c);
c.Scream();
}
}
[Serializable]
public class Rat:MarshalByRe fObject
{
public void ThereIsaCat(Cat cat)
{
cat.OnScreaming += new EventHandler(th is.cat_OnScream ing);
}
void cat_OnScreaming (object sender, EventArgs e)
{
Console.WriteLi ne("cat's awake, run quick!");
}
}
}
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