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.
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.
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.
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?
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.
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.
(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).
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" 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 After that stage, you can rename yourself to Heath Stewart or something :p
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
p.s. What is ECMA-334/5 C#/.NET CLR (common language runtime)?
If it's C# you are interested in, then I'd recommend Inside C# by Tom Archer. I certainly think it is the definitive tome on C# the language.
IMO, The only true way to learn is by doing. Books like Teach yourself x in 24 hours are okay for beginners. The best way to learn is to write your own code and read code done by others. There are plenty of good C# examples here at CP to download and read. The only way to learn is to make the mistakes and ask questions when you get stuck.
Sorry for this question but I'm looking for a quick answer.
How does .NET load assemblies? - or better how does .NET find the assemblies to load?
For example: if I have myexe.exe which uses mydll.dll myseconddll.dll, etc. does the runtime scan the folder containing myexe.exe for all .dlls and loads them? What if I have 1000 .dlls in a single folder? Will the runtime load them all or just will scan them all?
My exact question is: I want to organize my program like that
As you might guess what is in ./system/ will always be available and used by main.exe but what is in ./plugins/ could be different.
What methods do we have available to load .dlls? I'm currently reading Sam Haidar's article on late binding. Are there any other methods?
Could you please point me to information, where I can find an answer about this question.
Well, I did plugin loading by first just listing all the DLL files in the plugins directory and then calling Assembly.Load() (I think that's what it was called) for each of them and specifying the file as the parameter.