C# Discussion Boards - CodeProject

Re: KeyChar reference, does it vary with keyboard?

8-Oct-07 3:27

It's not system dependent because if you look at ASCII Table you can see that it's a standard notation for CR.

c#_keithy wrote:
e.KeyChar == 13

My recommendation is to use the Keys enumeration to compare with e.KeyChar

Hope it helps.

There are 10 kinds of people: those who understand binary and those who don't

c#_keithy8-Oct-07 3:35

c#_keithy

8-Oct-07 3:35

Just found an mdn article on using Keypress events, which uses the following compare statement

e.KeyChar == (char)Keys.Return

KeyPressArticle[^]

Thanks for your input

Give me strength, give me caffeine

How to determine provider type

jpasher8-Oct-07 2:41

jpasher

8-Oct-07 2:41

Hi,
I am able to list all available providers in the system presently windows using c#.
I can do that with the wql query i.e. select * from __Provider. But if i want to determine what type of provider it is, like say an instance provider or method provider etc then how do I determine that?

Also different classes use different types of providers like classes with events use event providers and those with use of methods use method provider.
But how to determine which event or method provider etc is being used by the class?

Communicating with a service

Lars Lie8-Oct-07 2:30

Lars Lie

8-Oct-07 2:30

First og all.....I'm a newbee.....!!!

I need to make a service, that on a given time executes an application (APPL_1).
Furthermore I need to be able to tell the service to execute APPL_1 manually from another og my C# applications (APPL_2) by clicking a button.

So what I need is a way to "communicate" between the service and APPL_2 in order to execute APPL_1.

I hope the above isn't to cryptic.. *ss*

All kind of "help" would be appriciated.

/Lars Lie

Re: Communicating with a service

Judah Gabriel Himango8-Oct-07 4:34

Judah Gabriel Himango

8-Oct-07 4:34

If you need to communicate between processes, you have several options.

Look up a technology called .NET remoting. It allows you to "communicate" with other processes. There are several articles and examples on this site.

There are plenty of other options too: web services (your service exists on the web, called by either other web applications or desktop applications), as well as the new Windows Communication Foundation technology (WCF). Any of those 3 should work for you.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Feast of Tabernacles (audio)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

using events as arguments

Bekjong8-Oct-07 2:30

Bekjong

8-Oct-07 2:30

Since there's no default method that let's me unhook all listeners from an event at once, I sometimes do this:

public event PropertyChangedEventHandler PropertyChanged;

        public void UnHook()
        {
            if (this.PropertyChanged != null)
            {
                Delegate[] list = this.PropertyChanged.GetInvocationList();
                foreach (Delegate d in list) this.PropertyChanged -= d as PropertyChangedEventHandler;
            }
        }

However, since I find it kind of annoying to write this code for different types of events I'd really like to be able to do something this:

public static void Unhook<T>(event x)
        {
            Delegate[] list = x.GetInvocationList();
            foreach (Delegate d in list) x -= d as T;
        }

My question: Does anyone know of a way to implement parsing of events as method arguments? Thanks in advance...

Standards are great! Everybody should have one!

Pete O'Hanlon8-Oct-07 2:41

8-Oct-07 2:41

Let me point you over towards EventPools[^]. They tackle the management of events in a different way.

Deja View - the feeling that you've seen this post before.

Bekjong8-Oct-07 3:11

Bekjong

8-Oct-07 3:11

Ok, that looks promising, thanks. Still I'm curious if it's in anyway possible to realize parsing of events as arguments...

Standards are great! Everybody should have one!

Scott Dorman8-Oct-07 3:57

Scott Dorman

8-Oct-07 3:57

Great article. I'm going to explorer this idea some more for some UI stuff I'm currently working on.

Scott.

—In just two days, tomorrow will be yesterday.

[Forum Guidelines] [Articles] [Blog]

Pete O'Hanlon8-Oct-07 4:00

Re: how to read rext file?

8-Oct-07 4:00

Thanks for that. Ever since I first stumbled on Marc's article I've found it easier to use EventPools. This article just grew out of my heavy use of EventPool - BTW, it makes implementing the MVC pattern really straight forward.

Deja View - the feeling that you've seen this post before.

WSS 3.0 Config Database

lsconyer8-Oct-07 2:22

lsconyer

8-Oct-07 2:22

Hello Developers. I realize this is a C# message board but I can't help but ask folks for advice. I recently upgraded our teams Sharepoint site from 2.0 to 3.0. I've run into a problem adding a content database but I'm afraid my biggest problem is I can't change the configuration database. As of right now, the site and the databases are on separate servers but we need them on the same server. If anyone can help me with this problem or send me a link that could help, I'd greatly appreciate it. Thanks for all responses in advance.

Lester
http://www.lestersconyers.com

how to read rext file?

P_Elza8-Oct-07 0:52

P_Elza

8-Oct-07 0:52

hi friends
i want to read a txt file using c#. i have some txt files with different informations. ex

       txt 1
customr:abc
article:zxy
page number: 4

        txt 2
customr:fgh
article:ser
page number: 3

   txt 3
customr:yhu
article:fgr
page number:10

the problem is : how i can find the value. how to read this txt file. i tried. but it is reading only if we fave given the full length. i want to find what will be the value of customer of txt 1.
plz do help me.
thank u.

Andrei Ungureanu8-Oct-07 0:59

Re: how to read rext file?

8-Oct-07 0:59

string text = File.ReadAllText(filename)

You can then search for different strings within your string using IndexOf, Substring etc. If you don't like this approach study MDSN for System.IO.File class. It has a lot of static methods that can help you read a text file in different ways.

Do your best to be the best

rajansethi8-Oct-07 2:47

rajansethi

8-Oct-07 2:47

You can use the readline function of the StreamReader. If the line contains the desired text such as txt 1, then read the next line and you will get the customer name etc.

How to convert a PDF document to JPG.

Exelioindia8-Oct-07 0:48

Exelioindia

8-Oct-07 0:48

Hi all,

How can i convert a PDF to JPG image page by page. Also I wish to save the images with the page number as file name.

For Eg:

If the PDF has 5 Pages. The first page should be converted as jpg and saved in the name as 1.jpg, for the second page 2.jpg................5.jpg

Is it possible to create this without using any third party tools/DLL. I wish to cretae this application using C#.NET 2.0

Plz help me.

Thanks in advance

Know is Drop, Unknown is Ocean

Re: How to convert a PDF document to JPG.

Christian Graus8-Oct-07 1:12

Christian Graus

8-Oct-07 1:12

Exelioindia wrote:
Is it possible to create this without using any third party tools/DLL.

The reason third party libraries exist is that C# has no support for this. Otherwise, no-one would buy the libraries. The PDF standard is free to download, your other option is to write your own, or look around source forge for something free.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: How to convert a PDF document to JPG.

Exelioindia8-Oct-07 2:28

Exelioindia

8-Oct-07 2:28

Hi,

Thanks for your suggestion. Now i got clear. Is there any dll with source, so that i can learn how they did it. Plz give me some samples to link's from where i can learn myself and do it.

Thanks once again

Know is Drop, Unknown is Ocean

Re: How to convert a PDF document to JPG.

Pete O'Hanlon8-Oct-07 2:43

WindowsPrincipal object gives null value for username when checked in component

8-Oct-07 2:43

Christian already pointed you towards SourceForge. Try there.

Deja View - the feeling that you've seen this post before.

Naveen S H8-Oct-07 0:41

Naveen S H

8-Oct-07 0:41

Hi,

WindowsPrincipal object gives null value when checked in component .It throws me a exception "unable to cast object of type "system.security.principal.genericprincipal to type system.security.principal.windowsprincipal " where as if the same code is used in winforms I get the current windows username correctly.The one line code that I use is,
" WindowsPrincipal user = (WindowsPrincipal)System.Threading.Thread.CurrentPrincipal;"

does that mean that current thread of the windows application has different authentication than its own components.

Iam confused ..!!any help..

Regards,
Naveen

Where will be the assembly stores in the System

pashitech8-Oct-07 0:40

pashitech

8-Oct-07 0:40

Hi I wanna know Assembly path....(the path where all the assemblies are stored...)
Thanks,
Prashanth

Re: Where will be the assembly stores in the System

Pete O'Hanlon8-Oct-07 1:45

Error while using System.Net.Mail.SmtpClient to send mail

8-Oct-07 1:45

Have a look at this[^] article on Fusion. Fusion provides you with information on the GAC (as well as other assembly locations).

Deja View - the feeling that you've seen this post before.

A M SOMAN7-Oct-07 22:59

A M SOMAN

7-Oct-07 22:59

I am trying to send a mail through my console application which is in .Net 2.0 with C# language. I am using the class System.Net.Mail.SmtpClient to send a mail. This was decided because the older version of this class System.Web.Mail.SmtpMail is now totally obsolete.
But I get an error message as "Failure sending mail." when I run my code.
I tried to resolve this by following:
1. Tried pinging the address from command prompt. It shows reply.
2. Assigned port number as number 25. Doesn't work. Gives same error.
Following is my code

FromEmail = "anil.soman@xyz.com";
strEmailAddre = "somebody@xyz.com";
strSubject = "some subject";
strBody = "some text for body";
System.Net.Mail.SmtpClient SMTPClient = new System.Net.Mail.SmtpClient();
SMTPClient.Host = "smtpservername";
SMTPClient.Port = 25;
SMTPClient.Send(FromEmail, strEmailAddre, strSubject, strBody);

What could be the reason for this? Any suggessions? Thanks in advance.

Regards,
Anil

Re: Error while using System.Net.Mail.SmtpClient to send mail

Andrei Ungureanu7-Oct-07 23:23

Re: Error while using System.Net.Mail.SmtpClient to send mail

7-Oct-07 23:23

A M SOMAN wrote:
Any suggessions?

1) Create an MailMessage object. I know it's the same thing but...you can give it a try.
2) Check the port number, because usually it's 25 but it can differ from one server to another
3) Try configuring an email client like Outlook and if that doesn't also work....it's from somewhere else than your App

Hope it helps.

Do your best to be the best

A M SOMAN8-Oct-07 0:49

A M SOMAN

8-Oct-07 0:49

Thanks for your suggessions karkster. Unfortunately it's not working.
I came to know that the code is not working because my local machine does not have SMTP server installed on it. So I need to run the code on a machine where it is installed already. Will try for this.

Re: Error while using System.Net.Mail.SmtpClient to send mail

Andrei Ungureanu8-Oct-07 1:02