C# Discussion Boards - CodeProject

4-Jan-04 8:23

What do you mean? Are you asking where you can ask a question about an object for ASP.NET and C#? You can ask here or in the ASP.NET forum - see the links above.

The word "objective" means that a statement is not biased in any way. For a question, this really doesn't make any sense.

Sending mail using SMTP

gr8tushar4-Jan-04 1:47

gr8tushar

4-Jan-04 1:47

Hi All,
here is a code snippet from my mail program.

SmtpMail.SmtpServer = "localhost";
SmtpMail.Send (myemail);

myemail is an object of MailMessage.

If i run this program for the first time in Visual Studio there is an error saying CDO.Message is not accessible.

When it runs all the mail messages are stored in c:\inetpub\mailroot\queue
they do not reach there destinatin. They all are stored in my computer only.
Please someone tell me how to solve this.
WIll be eagrly waiting for the answer.

Mike Ellison4-Jan-04 3:11

Mike Ellison

4-Jan-04 3:11

Can you post the details of how you're setting up myemail? Make sure the From property is set. Also, use a try/catch block to capture the exception and look for InnerExceptions. An InnerException may give more details as to the nature of the problem.

gr8tushar4-Jan-04 3:43

gr8tushar

4-Jan-04 3:43

Thanx for replying!
i have used this code ..

private void button1_Click(object sender, System.EventArgs e) {

MailMessage myemail = new MailMessage();
myemail.From ="Tushar";
myemail.To ="a_tushar@hotmail.com";
myemail.Subject ="Test";
myemail.Body ="How are you ";

System.Web.Mail.SmtpMail.SmtpServer = "localhost";
System.Web.Mail.SmtpMail.Send (myemail);

}

using this all my mails are stored on my computer only they are not being delivered at a_tushar@hotmail.com

Broken God4-Jan-04 5:59

Broken God

4-Jan-04 5:59

Well, the from should be an e-mail address.

Heath Stewart4-Jan-04 8:18

4-Jan-04 8:18

This isn't his problem. As Mazdak said, we answer his question several days ago. His problem is that he hasn't configured the SMTP Virtual Server in the Internet Information Manager. I gave him pointers how to get started and told him to read the help, but he obviously hasn't.

Mazdak4-Jan-04 5:08

Mazdak

4-Jan-04 5:08

We answer you some days before. Look at those links and see how you should send email by C# and stop reposting the same question please.

Mazy

No sig. available now.

Heath Stewart4-Jan-04 8:21

4-Jan-04 8:21

Once again I'll tell you that you're code isn't the problem - the problem is that you have NOT configured the SMTP Virtual Server at all or correctly. Again, go to Internet Information Manager in your Administrative Tools folder in the Control Panel and find the SMTP Virtual Server. You have to configure this to send mail using SMTP. It isn't setup by default but there's very little to do. Just read the help files which should be easy to understand.

Once again - as Mazdak also said - this is not a problem with your code, hence quit posting it in the C# forum. It is a problem with your machine configuration of the SMTP Virtual Server. If you need additional help, go to http://support.microsoft.com[^]. It really isn't hard to configure, though.

Panel + Keypress

Heroz4-Jan-04 0:26

Heroz

4-Jan-04 0:26

Hello again guys.
I have a new problem.
I made a button, which was had a keypress event and it worked perfectly.
Now I've a panel and it hasn't keypress event among its public stuffz.
How can i add my keypresseventhandler function to this panel?

MS Visual Studio.NET 2003
C#

Mike Ellison4-Jan-04 3:14

Mike Ellison

4-Jan-04 3:14

I may be wrong about this, but I think you have to add the handler to the Form object that contains the Panel, and test if the Panel has the focus.

Heroz4-Jan-04 5:29

Heroz

4-Jan-04 5:29

Well, i tried to add the handler to the form object, but I can't.
Here's what i did:

public Form1()
{
...
this.KeyPress += new KeyPressEventHandler(this.keypressed);
...
}

void keypressed(Object o, KeyPressEventArgs e)
{
switch (e.KeyChar)//Here I made a breakpoint, but the debugger doesnt reach this point, when I
//press a button...
{
...
}
}

What's the problem?

MS Visual Studio.NET 2003
C#

Mike Ellison4-Jan-04 6:27

Mike Ellison

4-Jan-04 6:27

Make sure the Form.KeyPreview property is set to true. There are some other good notes in the sdk documentation for Form.KeyPreview that you might want to check out.

I hope this helps--
--mike

Strange exception in a strange thread

Heroz4-Jan-04 8:04

Heroz

4-Jan-04 8:04

Yeah, thanks.
That works.

MS Visual Studio.NET 2003
C#

Broken God4-Jan-04 0:23

Broken God

4-Jan-04 0:23

I've started getting a very strange exception in my program.

An unhandled exception of type 'System.NullReferenceException' occurred in Unknown Module.

That happens sometimes when a window is created (not a specific window, has happened with messagebox and my own forms).
I am using .Net version 1.1. This is my first app with 1.1, so maybe there was some important detail I missed that has changed from 1.0 to 1.1?

I know threads and UI can cause a mess if done badly, but I am not doing any threading at all.
It seems that before the exception occurs, a new thread with no name is created.
VS cannot tell me anything about the thread: there is no call stack, the stack frame selector is unclickable... nothing.

Re: Strange exception in a strange thread

Heath Stewart4-Jan-04 8:16

Re: Strange exception in a strange thread

4-Jan-04 8:16

Many threads are created that handle various things, like painting a control or for asynchronous operations. You never know.

Make sure you're compiling a debug build. There's other reasons you might not be able to use some of the debugging tools (threads are always funny when it comes to that), but just to eliminate the obvious I mentioned that.

If you think it has something to do with threading, check that your application's Main entry point is attributed with the STAThreadAttribute, which is the main UI thread. Usually, though, you get different errors if your application is started in anything other than an STA.

As far as changes 1.0 to 1.1, there really isn't much besides new methods and a few new classes, and a few methods and properties that are now obsolete - nothing conceptual is mentioned, though.

All I can think is to click on the Debug->Exceptions menu and break on all exceptions. Changes are that you'll end up looking at assembler code, but it should give you some stack frame if the debugging symbols are loaded. If you're not using a checked build of Windows, they are probably stripped. VC++ does install some program database (pdb files), but not for the core libraries. If you dig around though, you should at least be able to determine which library you're in. That could help solve the problem since most libraries are pretty specialized.

Broken God4-Jan-04 9:58

Broken God

4-Jan-04 9:58

OK, thanks for the help. I'll try and see what happens with all exceptions breaking into the debugger on throw.

CSharp Studying

Melanius4-Jan-04 0:04

Melanius

4-Jan-04 0:04

(Not sure if i had to post this here, couldn't find a forums here more fitting, if it's supposed to go elsewhere please remove).

I just finished readying: "Teach yourself C# in 24 Hours, by James Foxall", it really was a nice book, but i feel there are parts it discussed that didn't "fill" my knowledge as much as i'd like. Could someone propose a book, a set of books, or a complete training course that it is best for, learning CSharp, understaning OOP as a concept, and taking you to the next level, an intermediate status to pro (well pro without a proffesional experience).

Thanks in advance

leppie4-Jan-04 1:01

leppie

4-Jan-04 1:01

The next thing is to read all the .NET frameworks docs in MSDN from start to finish. That should keep you busy for a year or 2, but you will be a "pro" Smile | :)

To reach the next level, you will have to study the EMCA-334/5 C#/.NET CLR specs to answer all your questions you have left Smile | :)

After that stage, you can rename yourself to Heath Stewart or something :p

leppie ::AllocCPArticle("Zee blog");
Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.

Melanius4-Jan-04 2:40

Melanius

4-Jan-04 2:40

Thanks ofr pointing these things out for me, but the problem is, i don't trust myself yet to start searching on my own, performing quantum leaps. Even with having finished that book and all the examples/tests in it, i cannot write a simple program on my own, without having 100 backdraws and stuff. Meaning i cannot make code decisions yet, i just type like a blind and hope that this will work. That's why i asked for a book/s that will help me answer questions ( that maybe now i don't know i have, but will surely stumble upon later), and will serve as a quide to get me on knowledge-train, then i will surely have to dig on MSDN library (and CSharp Dev center). And i am also lacking OOP knowledge (only thing i know is what i've read in this book) 'cause C# is the first "real" language i started studying, no c++ background etc.

So if there's a book/s that would fit my needs as i mentioned above, please help me make the right choice Smile | :)

p.s. What is ECMA-334/5 C#/.NET CLR (common language runtime)?

Nick Parker4-Jan-04 6:18

Nick Parker

4-Jan-04 6:18

leppie wrote:
After that stage, you can rename yourself to Heath Stewart or something :p

Good call. Laugh | :laugh:

- Nick Parker
My Blog