C# Discussion Boards - CodeProject

Heath Stewart19-Dec-03 3:43

19-Dec-03 3:43

You should search CodeProject. There is lots of examples and topics regarding socket programming.

How do you know the data types? You're the one sending and receiving them, so you dictate what those structures are. If you didn't create these structures for either the client or the server, then you need to consult the documentation for the socket client or server that you're trying to talk to. As far as sending files, you just send them using a buffer (a Byte[] array) as is. For strings and XML, just send the character data using the proper encoding (see System.Text.Encoding for more information). You get the Byte[] array for the characters based on an agreed encoding between client and server. You can either assume a single encoding between the two, or send data (much like HTTP, SMTP/MIME, etc.) using an encoding that one dictates.

-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----

create new dial_up connection

heba_zien19-Dec-03 3:15

heba_zien

19-Dec-03 3:15

hi i making a program to make dial-up connection and connecting to the net ,i dial with numbers stored in database , i use win API
like(InternetDial() ,InternetHangUp()), but i have two problems

1)InternetDial is dialing with default network connection on pc.
i need to make it taking numbers from database.?????

2) i want to create a new dial-up connection on pc, idont now what function i can use

thank u for advanced help
send me on hz_csharp@hotmail.com

Re: create new dial_up connection

Heath Stewart19-Dec-03 3:39

Heath Stewart

19-Dec-03 3:39

Assuming you're the same person as before, I already covered this with you: http://www.codeproject.com/script/comments/forums.asp?msg=694424&forumid=1649#xx694424xx[^]. InternetDial can accept a phone number to dial.

Also, creating an actual connection file/config seems to be platform dependent. You should search MSDN Online for ways to do this.

Re: create new dial_up connection

Member 74005419-Dec-03 12:13

Member 740054

19-Dec-03 12:13

it try to use internetdial() to take numbers,but i can't because it take name of connection to dial with (existing connecton on pc) as a parameter
plz tell me how to make it take numbers

Runtime Control Resizer

Jinwah19-Dec-03 2:29

Jinwah

19-Dec-03 2:29

I am after a component that will enable users to resize visual objects such as an image at runtime. Just like in a standard art package.

I wrote 1 myself in Delphi and I could port it to C# but I am not sure how I would implement some of the Mouse capture routines...

Besides there must be an open source control that I can use/develop further to achieve what I want.

TIA and Merry Christmas

Luke

Re: Runtime Control Resizer

Heath Stewart19-Dec-03 3:36

Heath Stewart

19-Dec-03 3:36

Jinwah wrote:
Besides there must be an open source control that I can use/develop further to achieve what I want.

Well, did you try searching for one? There should be plenty of examples here on CP.

Also, read the documentation for the System.Windows.Forms.Control class. That has all the mouse events and properties you need to do this.

Application configuration?

dophka18-Dec-03 23:36

dophka

18-Dec-03 23:36

I am new to C#. I am developing a small windows application to train myself with. I faced an issue and can't figure out a good approach to it.

My application needs a few configuration settings that shall be available for altering from users interface. I can build a form etc. but the problem is that I don't know how to keep custom settings. I tried application configuration file, defining a custom section and using IDictionary class instance for reading them. Well, I can read them but can't save them as they only get saved in System.Collections.IDictionary and don't get saved in the application config file.

Is there any simple way to arrange custom configuration and read-write it?

Can someone share a simple understandable example of it?

I hope I explained it clear enough.

Thank you all.

Re: Application configuration?

Kannan Kalyanaraman18-Dec-03 23:58

Kannan Kalyanaraman

18-Dec-03 23:58

Take a look at the "Isolated Storage" in the docs and also have a look at this[^] article.

Regards,
Kannan

Re: Application configuration?

dophka19-Dec-03 0:30

dophka

19-Dec-03 0:30

I guess this might help and I am trying to read the article.

However, the code in the article looks bit complicated. Can you (someone) maybe give me a simple example of reading/writing a couple of settings?

like nick : real name?

thanks a lot lot lot!

Re: Application configuration?

Heath Stewart19-Dec-03 3:27

Heath Stewart

19-Dec-03 3:27

The .config file is just an XML file, so use the System.Xml namespace elements to append/insert/delete your settings. Note that this will not update your configuration options while the process is running. For information on how to do that, search the comments for this forum for keywords like AppDomainSetup because I've already covered how to do this a couple times. Of course, you could always update your settings in the running, cached instance if you provide an instance property for your configuration section object (which the IConfigurationSectionHandler implementation creates) and update your UI accordingly.

Re: Application configuration?

zuhx19-Dec-03 4:33

zuhx

19-Dec-03 4:33

Look at XML serialization. You can create an xml file that contains your app settings. You would simply 1. open a file stream 2. create xml formatter 3. serialize the settings you choose to the xml file.
Take a look at serialization. You could use the .config file but this is read only, therefore you cannot create a user interface to modify it.

Re: Application configuration?

Heath Stewart19-Dec-03 4:56

Heath Stewart

19-Dec-03 4:56

And if the config file contained other stuff not for his section? This would NOT be a good idea because the other IConfigurationSectionHandler implementations provided in the .NET BCL do not use XML serialization. XML Serialization would wipe out the file and create a new one (based on your stream preferences).

Re: Application configuration?

Alvaro Mendez19-Dec-03 8:20

Alvaro Mendez

19-Dec-03 8:20

For a simple solution take a look at my Profile article[^].

Regards,
Alvaro

He who laughs last, thinks slowest.

New table in database...

Amirjalaly18-Dec-03 23:01

Amirjalaly

18-Dec-03 23:01

How can i create a new datatable in a database ?
We have a connection and a dataadaptor .

I mean programically.

Regards' Amir Jalaly

life is tow days'
one is paid for love someone '
and one day is paid for hate him'

Re: New table in database...

Torsten Mauz19-Dec-03 0:19

Torsten Mauz

19-Dec-03 0:19

You need to execute a SQL "CREATE TABLE" statement. Here is the documentation for MS Sql

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/tsqlref/ts_create2_8g9x.asp[^]

That should give you enough to get started...may be different for other DB's, just read the documentation for their specific "create table" implementation.

HTH

VB statment to C# statment..

Amirjalaly18-Dec-03 22:58

Amirjalaly

18-Dec-03 22:58

I want to convert this code from vb.net to c#.net:

Declare Function ExitWindowEx Lib "User32" (Byval l as long ,Byval s as long ) as long or this:

Declare Function FormatMessage Lib "kernel32" Alias _<br />
	 "FormatMessageA" (ByVal dwFlags As Int32, ByVal lpSource As Int32, _<br />
	 ByVal dwMessageId As Int32, ByVal dwLanguageId As Int32, _<br />
	 ByVal lpBuffer As StringBuilder, ByVal nSize As Int32, ByVal Arguments As Int32) _<br />
	 As Int32

what is equal for Declare and lib in C#?

Regards'Amir Jalaly

life is tow days'
one is paid for love someone '
and one day is paid for hate him'

Re: VB statment to C# statment..

Nick Parker19-Dec-03 2:18

Nick Parker

19-Dec-03 2:18

Amirjalaly wrote:
what is equal for Declare and lib in C#?

Check the documentation for DllImportAttribute Class[^].

- Nick Parker
My Blog

Last time I checked, all programmers have selective ignorance. I know nothing about 3D graphics. I know a lot about COM. VB gets under people's skin because one can be ignorant of computer architecture and ASM and still get a lot done. - Don Box

converting C structure ??

azusakt18-Dec-03 22:02

azusakt

18-Dec-03 22:02

Hello,
I'm going to use C struct in C#, but I'm not sure how to convert the struct to C# structure?

struct HeaderStruct
{
 void *FileHeader;
 void *Info;
     char *input;
}

could anybody help me? Thank you~~

Re: converting C structure ??

Heath Stewart19-Dec-03 3:24

Heath Stewart

19-Dec-03 3:24

[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
public struct HeaderStruct
{
  public IntPtr FileHeader;
  public IntPtr Info;
  public string input;
}

Re: Requesting Assistance

Heath Stewart19-Dec-03 3:23

Heath Stewart

19-Dec-03 3:23

Use a custom ListViewItem or something with the properties you want, and in the handler for the ListView.SelectedIndexChanged event, set the PropertyGrid.SelectedObject to your custum ListViewItem. You should read about the classes in the System.ComponentModel namespace for ways to provide custom TypeConverters and UITypeEditors for those properties if you require it.

ToolBar flat style

araku18-Dec-03 19:37

araku

18-Dec-03 19:37

Hi all!

Possible do toolbar flat as in IE6.0?

I know that in VC6.0 this was not a problem.
But in VC.NET, I can not do this.

Re: ToolBar flat style

Heath Stewart19-Dec-03 3:21

Heath Stewart

19-Dec-03 3:21

ToolBar.Appearance = ToolBarAppearance.Flat

Re: ToolBar flat style

araku19-Dec-03 5:01

araku

19-Dec-03 5:01

Many thanks.

You me much helped.

Custom Exception

Member 33502218-Dec-03 18:37

Member 335022

18-Dec-03 18:37

Hi Guys!
we know that there is a way to handle custom exceptions in
asp dot net by specify the error page.
is there any way to do the same in csharp windows form.
i.e custom windows form.
i don't want to write try/catch block in my programm
in all places.i just want to write it once where it can handle all the program exception. is there a way.

i want to write only one try/catch block that can handle all the exceptions of the whole applications(windows Application), which off-course may contains multiple windows forms

Ali Khan

Re: Custom Exception

Heath Stewart19-Dec-03 3:20

Heath Stewart

19-Dec-03 3:20

AppDomain.UnhandledException

You can get the current AppDomain with AppDomain.Current.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.