Good reference for Plugin based architecture

[Tamir Khason]

Friends, maybe someone knows good references for .NET plugin based program
architecture. E.g I want to be able to "put" class library(dll) in some
place (where I do not the name of the class, but only structure [maybe
abstract???]) and use it "plug-and-play" in main procedure without
recompilation

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

[Chua Wen Ching]

Hi Tamir,

From my understanding, plugin based architecture always involves a plugin
host which is always an executable file (exe) and not dll. Ok, maybe i don't
get what you meant :(

I want to be able to "put" class library(dll) in some

place (where I do not the name of the class, but only structure [maybe
abstract???]) and use it "plug-and-play" in main procedure without
recompilation --> ??? confuse a bit

Cheers.

"Tamir Khason" wrote:
Friends, maybe someone knows good references for .NET plugin based program
architecture. E.g I want to be able to "put" class library(dll) in some
place (where I do not the name of the class, but only structure [maybe
abstract???]) and use it "plug-and-play" in main procedure without
recompilation

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

[Julia]

1.Define your Interface
2.Implement this interface in your concrete class
3.Create your host applicatrion and declare avariable of type Interface
4.Use reflection to create the 'Real' object
(you can put the name of the object and the assembly path in the config
file)
5.Use the Interface.


"Tamir Khason" <ta**********@tcon-NOSPAM.co.il> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

Friends, maybe someone knows good references for .NET plugin based program
architecture. E.g I want to be able to "put" class library(dll) in some
place (where I do not the name of the class, but only structure [maybe
abstract???]) and use it "plug-and-play" in main procedure without
recompilation

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

[Jonathan Yong]

Try this two articles:

http://www.codeproject.com/csharp/PluginsInCSharp.asp

http://www.codeproject.com/csharp/plugins.asp
Tamir Khason wrote:

Friends, maybe someone knows good references for .NET plugin based program
architecture. E.g I want to be able to "put" class library(dll) in some
place (where I do not the name of the class, but only structure [maybe
abstract???]) and use it "plug-and-play" in main procedure without
recompilation

[Tamir Khason]

Tnx
couple of problems with this architecture:
Following:
interface IInterface1
{}
interface IInterface2: Interface1
{}
class MayClass:IInterface2
{}

While doing enumeration thow dlls (public and non abstract) we check for
type of IInterface1 so
Type typeInterface = myType.GetInterface("BaseNamespace.IInterface1", true);

returns some type (IInterface1). go on:

MyPlugin.Instance =

(IInterface1)Activator.CreateInstance(pluginAssemb ly.GetType(pluginType.ToString()));
//

returns error Can not cast. Wich means that class(MyClass inherited from
Interface2, wich inherited from interface1 and not be cased to interface1)

Please advice, it looks stupid that class inh from base interface can not be
cased to it.

TNX

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

"Jonathan Yong" <da*******@someplace.com> wrote in message
news:uz**************@TK2MSFTNGP09.phx.gbl...

Try this two articles:

http://www.codeproject.com/csharp/PluginsInCSharp.asp

http://www.codeproject.com/csharp/plugins.asp
Tamir Khason wrote:

Friends, maybe someone knows good references for .NET plugin based
program architecture. E.g I want to be able to "put" class library(dll)
in some place (where I do not the name of the class, but only structure
[maybe abstract???]) and use it "plug-and-play" in main procedure without
recompilation

[Jon Skeet [C# MVP]]

Tamir Khason <ta**********@tcon-NOSPAM.co.il> wrote:

Tnx
couple of problems with this architecture:
Following:
interface IInterface1
{}
interface IInterface2: Interface1
{}
class MayClass:IInterface2
{}

While doing enumeration thow dlls (public and non abstract) we check for
type of IInterface1 so
Type typeInterface = myType.GetInterface("BaseNamespace.IInterface1", true);

returns some type (IInterface1). go on:

MyPlugin.Instance =

(IInterface1)Activator.CreateInstance(pluginAssemb ly.GetType(pluginType.ToString()));
//

returns error Can not cast. Wich means that class(MyClass inherited from
Interface2, wich inherited from interface1 and not be cased to interface1)

Please advice, it looks stupid that class inh from base interface can not be
cased to it.

Chances are you've got the problem listed here:
http://www.pobox.com/~skeet/csharp/plugin.html

Otherwise, could you post a short but complete program which
demonstrates the problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too