Problem with deserialization - C# Discussion Boards

Curtis Schlak.13-Dec-05 5:36

13-Dec-05 5:36

Yes, WindowsApplication4.exe.config is the .config file for the Windows Forms application because the name of the application is WindowsApplication4.exe.

It is located in the same directory as WindowsApplication4.exe.

"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty

fmardani13-Dec-05 5:37

fmardani

13-Dec-05 5:37

ok, so now I will place my appsetting lines in the app.config in the clinet side.

Curtis Schlak.13-Dec-05 5:40

13-Dec-05 5:40

That should work for you. Hope all turns out well. Happy coding.

"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty

fmardani13-Dec-05 5:57

fmardani

13-Dec-05 5:57

This is now clear.
The whole picture is that I have a client layer with the forms and now tha app.config file (for the connection string).
This client layer now connects to the business layer.
The business layer connects to the webservice and the webservice connects to the datalayer where the connection string is required.
How do I get the connectioinstring into the datalayer ?
Thanks

Curtis Schlak.13-Dec-05 6:08

13-Dec-05 6:08

If I understand this correctly, you have the following architecture.

Client Application <-> Business Layer <- INTERNET -> Web Service <-> Data Layer
Windows Forms App      Class Library                 Web Service     Class Library

The assemblies you have will use the following .config files:

Client Application: uses the <applicationName>.exe.config file for the client application
Business Layer: uses the <applicationName>.exe.config file for the client application
Web service: uses the web.config file for the Web service
Data Layer: uses the web.config file for the Web service

"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty

fmardani13-Dec-05 6:22

fmardani

13-Dec-05 6:22

Thank you. I can now use the connection string inside my n-tier application.

Curtis Schlak.13-Dec-05 6:32

Problem with deserialization

13-Dec-05 6:32

I am happy to hear that. Happy coding!

"we must lose precision to make significant statements about complex systems."
-deKorvin on uncertainty

Wjousts13-Dec-05 4:06

Wjousts

13-Dec-05 4:06

I'm having a problem that is really driving me nuts. The setup heres a little complicated, so please bare with me:
I have a dll that contains a class, let's call it Manager, it's job is to search a directory, find other dlls and search them for classes that implement a certain interface, lets call it ICalc. It uses Assembly.LoadFrom to do this. It maintains a list of all the classes it finds that implement ICalc (in an arraylist of Type objects) and returns information about those classes (name and version) to the client program. Manager also has a method, let's call it GetCalc, that will instantiate and return an object that implements ICalc of a type requested by the caller. So far so good, and this seems to work okay.
Now I have another dll that contains a class, lets call it MyCalc that implements ICalc. When MyCalc is instantiated it must instantiate a few other objects that are related to its function. Among these are a class that contains some settings, lets call it MySettings. These settings are actually serialized to the disk and deserialized again by MyCalc using a static method in MySettings, something like:
public static MySettings LoadSettings(string filename)
Hopefully, you are still following this. Now, I create a simple C# console application to test this out and everything works fine - great!! But here's the problem, I'm trying to use LabView[^] as the client for the Manager Dll and this is were I run into trouble. For some reason the deserialization no longer works and chokes with an "Invalid Cast" exception. Basically the line:
MySettings setting = (MySettings) MyFormatter.Deserialize(MyStream)
Doesn't work.
Does anybody have any clue why this might be? I'm really confused by this. I have a guy (a LabView developer) waiting for my DLL and I can't figure this out!

Re: Problem with deserialization

Robert Rohde13-Dec-05 4:51

Robert Rohde

13-Dec-05 4:51

No direct idea what happens but you could find out by checking the type before casting:

object o = MyFormatter.Deserialize(MyStream);
Console.WriteLine(o.GetType().Fullname);

This probably gives you a hint on whats going wrong.

Re: Problem with deserialization

Wjousts14-Dec-05 2:52

Wjousts

14-Dec-05 2:52

Thanks for your reply. I have checked the type of the object returned from deserialization and it is the correct type as far as I can tell. I think the problem is rooted in how the assemblies are being loaded but I'm having a hard time getting to grips with it.

How to get message from Queue?

Rashid.Mahmood13-Dec-05 3:55

Rashid.Mahmood

13-Dec-05 3:55

Hi all,
I have developed a dll in Win32. That dll finds the updated regions
of the desktop and then post these regions data to a C# application
using PostThreadMessage(). But problem is here i m not so much use to
with C# so i havent any idea how can i get it from the Application
message queue of my C# application.

Thanx

C# and VTAPI ACTIVE X CONTROL

CRASH7213-Dec-05 3:52

CRASH72

13-Dec-05 3:52

Has somebody used VTAPI ACTIVE X CONTROL in c# application ?
If "yes", can tells me how do it ?

Bye from Italy !

Test for Network Connection

dbrenth13-Dec-05 3:47

dbrenth

13-Dec-05 3:47

Is there a simple function to return a boolean value whether someone is connected to a network and/or the internet?

Thanks

Brent

pitnu13-Dec-05 4:09

pitnu

13-Dec-05 4:09

u do one thing that on network(If it is LAN then) ping to each node.

and if it give response(means node) then it is connected else not

if u have difficulty that how to ping node in .net u can mail me

prakash_paghdal@gmail.com

MarcelErz13-Dec-05 4:41

13-Dec-05 4:41

Hi!

Try to use the search in this forum. Here is a link to one of these topics:
http://www.codeproject.com/script/comments/forums.asp?forumid=1646&mode=all&userid=2388831&select=1304439&df=100&mpp=50#xx1304439xx[^]

MarcelErz13-Dec-05 4:45

13-Dec-05 4:45

Me again!

Here is the API call for C#:

[DllImport("sensapi.dll")]
private extern static bool IsNetworkAlive(ref int flags);

Like in VB.Net, you can use it in this way:

int liReturn = 0;

if IsNetworkAlive(liReturn) {
// ... Your code (if connected)
} else {
// Not connected code
}

Marcel Erz

C# in the Computer network

dbrenth13-Dec-05 7:21

dbrenth

13-Dec-05 7:21

Thanks for the suggestions. I also found the System.Net.Sockets.TcpClient class which lets me test connect to a remote server.

Brent

richarding13-Dec-05 3:34

richarding

13-Dec-05 3:34

How could I send and receive files between two computers in the LAN? Could someone give me some hints or codes of C#? Wink | ;)

Richard

akyriako7813-Dec-05 3:42

akyriako78

13-Dec-05 3:42

With a pigeon...

(No offense just in the mood for joking)

Poke tongue | ;-P

MarcelErz13-Dec-05 4:37

13-Dec-05 4:37

Hello!

Check out the articles and search for TCP, UDP and Socket. You will find there something helpful.

Marcel Erz

MarcelErz14-Dec-05 2:06

14-Dec-05 2:06

Take a look at this:

http://www.codeproject.com/script/comments/forums.asp?msg=1305908&forumid=1649&mode=all&userid=2388831#xx1305908xx[^]

Judah Gabriel Himango13-Dec-05 4:41

Judah Gabriel Himango

13-Dec-05 4:41

Are you talking about having an application sitting on both computers and sending files between them? Or do you mean via Windows Network file sharing?

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Bought a House!
Judah Himango

richarding18-Dec-05 23:56

richarding

18-Dec-05 23:56

I just want tohave an application sitting on both computers and sending files between them. Thanks Smile | :)

dingwei