C# Discussion Boards - CodeProject

Re: how do u create a stand alone C# program

8-Jun-03 11:23

Afraid not. Your friend will have to DL the .NET framework for it to work.

There are only 10 types of people in this world....those that understand binary, and those that do not.

9-Jun-03 0:43

Absolutely correct but you should remember that it DOESN'T mean your user has to have Visual Studio .net or the .NET Framework SDK installed. All they need is the .NET Framework Redistributable which should be on your VS.NET installation.

I have seen this misconception surface quite a bit!!!

If you are deploying your code on CD you can include it on there... otherwise as has been said they will have to download it...

Big Grin | :-D

How can i determine the click on one master-detail DataGrid is in the master table or in the detail table ?

Xpeive8-Jun-03 5:35

Xpeive

8-Jun-03 5:35

how can i determine the click on one master-detail DataGrid is in the master table or in the detail table ?

the DataGrid dataSource is binding from the master table

thanks.
Confused | :confused:

Xpelive

Re: How can i determine the click on one master-detail DataGrid is in the master table or in the detail table ?

A.Wegierski8-Jun-03 23:37

A.Wegierski

8-Jun-03 23:37

If You have DataSource=anyTable You have no master/detail Smile | :)

. Should be DataSource=anyDataSet, DataMember="anyTable". See HitTest(), HitTestInfo, HitTestType in help

Hi,
AW

Books

Makover8-Jun-03 2:33

8-Jun-03 2:33

Hello all (My first Post here Blush | :O

)

I would like to start learning C# next week. Up untill now I have experiance in C, C++ and Java but I've only done console applications.

The Q: With which books should I start with? I'm not interested in books that spend 2 chapters on flow control but on the other hand I rather pass books that "convert" you from Java to C# (as "C# for Java programmers"...).
I thought about 3 options :

1) Programming C#, Jesse Liberty.
2) Microsoft Visual C# Step by Step, John Sharp.
3) C# How to Program, Deitel.

For a first book I would prefer learning only about console applications. later I wil ask about Visual C# Books Big Grin | :-D

.

So what would you recommend?

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

Rocky Moore8-Jun-03 5:52

Rocky Moore

8-Jun-03 5:52

Welcome to .NET!

Petzold also has a good book out on C#.

Rocky Moore <><

Makover8-Jun-03 6:05

8-Jun-03 6:05

Hi Rocky,

I read some reviews on Petzold's book and came to the conclusion that the other 3 I mentioned were better. I just have to pick one of them (let Petzold be the 4'th choice - you convinced me it's good too Wink | ;)

). As I said, the main objectives are:

1) The book shouldn't elaborate too much about basic things such as flow control, variables...

2) The book should concentrate only on console applications.

With that in mind, what would the best choice?

Thanks for your answer.

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

leppie8-Jun-03 7:16

leppie

8-Jun-03 7:16

Makover wrote:
1) Programming C#, Jesse Liberty.
2) Microsoft Visual C# Step by Step, John Sharp.
3) C# How to Program, Deitel.

Those look all three too beginner orientated.

I suggest that you be brave, read the excellenet MSDN docs (you just want to know the syntax or C# really, further is pretty much 100% JAVA) on C#, and then for the hard part tackle the .NET framework docs.

We use a Dietel How to Program C book in CS 1 , but that is really beginner...

<a TITLE="See my user info" href=http://www.codeproject.com/script/profile/whos_who.asp?id=38829>leppie<a>::<a TITLE="Go to all articles  written by me" href=http://www.codeproject.com/script/articles/list_articles.asp?userid=38829>AllocCPArticle</a>(<a TITLE="Go to my latest, greatest article!" href=http://www.codeproject.com/useritems/dfamachine.asp >Generic DFA State Machine for .NET</a>);

Makover8-Jun-03 7:25

8-Jun-03 7:25

So you actually recommend not to buy for now any book? Use only MSDN?

P.S
I have accidentally written "Microsoft Visual C# Step by Step, John Sharp" while explicitly saying that I'm not interested in any "visual" stuff for now. I ment "Inside C#, Tom Archer". Sorry.

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

leppie8-Jun-03 7:59

leppie

8-Jun-03 7:59

Makover wrote:
So you actually recommend not to buy for now any book? Use only MSDN?

Maybe get one book just to get the hang and read on the loo or in bed, but for me MSDN is more than sufficient Smile | :)

<a TITLE="See my user info" href=http://www.codeproject.com/script/profile/whos_who.asp?id=38829>leppie<a>::<a TITLE="Go to all articles  written by me" href=http://www.codeproject.com/script/articles/list_articles.asp?userid=38829>AllocCPArticle</a>(<a TITLE="Go to my latest, greatest article!" href=http://www.codeproject.com/useritems/dfamachine.asp >Generic DFA State Machine for .NET</a>);

Kant9-Jun-03 9:58

Kant

9-Jun-03 9:58

leppie wrote:
but for me MSDN is more than sufficient

Me too. I learned (?) C# from MSDN, Google and CP. Blush | :O

I think compared to C++/MFC developers, Java developers can easily jump into C# bandwagon.

Never take a problem to your boss unless you have a solution.
This signature was created by "Code Project Quoter".

KingTermite8-Jun-03 8:37

8-Jun-03 8:37

I was in your exact same shoes a few months ago. I first bout Petzold's book, but it was really more about deep internals of Windows than just learning the C# language. A good reference, but not good for learning Windows programming in C# for first time.

I went to Amazon and made a list of all the "contenders" and I ended up getting

C# for Experienced Programmer's by Deitel&Deitel. It's basically the as the "how to program in c#", plus extra chapters for somebody who already has a little experience.

There are only 10 types of people in this world....those that understand binary, and those that do not.

Makover8-Jun-03 8:53

8-Jun-03 8:53

OK, I'll check that one too.

Thank you all for your replies.

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

Makover9-Jun-03 0:43

9-Jun-03 0:43

Yep, I'm sure I'll buy this one. Everybody recommended this book, however this isn't a 'first book on the language' option.

Thank You.

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

Makover9-Jun-03 1:04

9-Jun-03 1:04

Deliveries to Israel are expensive with commercial companies/web sites Wink | ;)

. There are some good online stores here too.

Thanks.

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

David Stone9-Jun-03 8:03

David Stone

9-Jun-03 8:03

The best book for learning C# is Inside C# by Tom Archer, MSPress. Tom only uses Console apps, and he goes very in depth on almost everything you could ever want to know about C#. He even compares it to Java occasionally. Smile | :)

Hawaian shirts and shorts work too in Summer.
People assume you're either a complete nut (in which case not a worthy target) or so damn good you don't need to worry about camouflage...
-Anna-Jayne Metcalfe on Paintballing

Makover9-Jun-03 11:09

9-Jun-03 11:09

Just to let you know - I ordered "Inside C# by Tom Archer" and "Professional C#". I'm sure I'll use MSDN...

Thank you all for your advice.

-------------------------------------------------------------------
* Only drug dealers and computer programmers call their clients 'users'...
* Pardon me for the poor English.

KingTermite10-Jun-03 3:11

Is there a good way to do this?

10-Jun-03 3:11

Thanks for the update....I was kind of curious to know what book(s) you would go with.

There are only 10 types of people in this world....those that understand binary, and those that do not.

accessing GUI

stonee747-Jun-03 23:00

stonee74

7-Jun-03 23:00

Hi there,

I want to split up my app into a GUI part and the some "working" parts behind.
Which means to access certain parts of the GUI (e.g. Listbox) and fill it with data generated in nother methods of other classes.
For me as a newbie i could maybe imagine some ways to do it, but what's the professional approach on that one? Are there any tutorials around related to that?

thanks a lot in advance,
stonee

Re: accessing GUI

Rocky Moore8-Jun-03 5:41

Rocky Moore

8-Jun-03 5:41

Yes, there are many avenues for breaking the GUI up and having business and/or data logic.

In .NET it is so easy to use libraries (DLLs) that makes a long term (old fuddy duddy) like me, have to rethink my old logic. Now that working with modules are so easy, it calls out for a greater object oriented design. It is what COM was supposed to be with all the hassle.

You can find many different articles right here on CP or go to msdn.microsoft.com and search for "n-tier". There are many things on their about breaking an application up into modules (tiers).

By using a modular approch to your application, you can replace you business logic without having to redistribute you GUI, or switch database sources without having to modify your business logic or GUI.

To even add more of a reason, with .NET, remoting and web services offer even more bang for seperation. If it is modular from the start you might remote out your business logic and data logic to reside out on a server or distribute it amongst different machines. Really easy to do with .NET. Flexible!

Of course, all this only matters if you application is something more than a simple one screen program to display some data. It really all depends on the type of application.

Rocky Moore <><

Re: accessing GUI

stonee748-Jun-03 10:06

stonee74

8-Jun-03 10:06

Ok, thanks for that.
But just for my understanding;

I have a method in class a, providing a certain information.

internal void OnAnswer(object myobject) <br />
	{<br />
	         myobject.message<br />
	}

and my main class

public class Form1 : System.Windows.Forms.Form<br />
{<br />
<br />
		private System.Windows.Forms.ListBox listBox1;<br />
}

what's the best approach to add myobject.message to my listbox?
and what's the easiest one?

thanks again,
stonee

Re: accessing GUI

Rocky Moore8-Jun-03 17:57

Rocky Moore

8-Jun-03 17:57

If you your main class knows about your class taht you have the 'OnAnswer' in, you could use a delegate to notify your main class to feed the listbox. You could also pass the listbox to the other class and have it fill it for you. Personally, I would rather have the delegate trigger an event that the main class picks up. You can pass the message in the delegate to the main class.

Rocky Moore <><

dratti7-Jun-03 22:39

dratti

7-Jun-03 22:39

Say I've got some type of collection (usually an ArrayList), and I need to itterate through it, call some methods, and possibly remove one or more of the elements. You cant modify a collection while enumerating through it. If its an Array I could access it with an index variable, but then I need to always check if the size has changed and adjust for that (which is incredibly tricky because you dont know which element was removed and whether you need to readjust your index value or not). Are there any elegant ways of doing this?

Heres what I mean

<br />
for(int i=0; i < m_objects.Count; i++)<br />
{<br />
       PhysicsObject obj2 = (PhysicsObject)m_objects[i];<br />
<br />
       if(obj2 == obj)<br />
	  continue;<br />
<br />
	if(rect.IntersectsWith(obj2.getBoundingBox()) || rect.Contains(obj2.getBoundingBox()))<br />
	{<br />
		//collision<br />
	        obj.onCollision(obj2);   //This could remove an object from m_objects<br />
		obj2.onCollision(obj);   //This could remove an object from m_objects<br />
	}<br />
  <br />
        //If an object was removed m_objects.Count is one less. If the object that was removed had<br />
        //already been enumerated, we need to do the same index again (all elements shift down) <br />
        //if it hasnt been enumerated, we dont do anything to i.<br />
}<br />

This may be more a design problem. I can think of a few ways to hack around this (dont delete objects inside of onCollision, just put them in a queue to be deleted after all collision detections are done), but Im hoping theres an elegant way to itterate through a collection and be able to remove elements without stepping on your toes.

Thanks for any help
Dave Ratti

Re: Is there a good way to do this?

Iulian Serban8-Jun-03 6:04

Iulian Serban

8-Jun-03 6:04

You could have the OnCollision method return a bool indicating if the method has removed an object who`s index is smaller or equal to i and then do i--;

if(obj.onCollision(obj2) || obj2.onCollision(obj))
{
i--;
}

Re: Is there a good way to do this?

KingTermite8-Jun-03 8:39