C# Discussion Boards - CodeProject

Re: SQL Connection problem in Windows Service asp.net c#

24-Aug-12 0:35

You've asked this in at least one other forum. Please, just use one forum per question.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Vijay Selvaraj26-Aug-12 21:56

Vijay Selvaraj

26-Aug-12 21:56

can you use connection pool size 1 to 5 etc in your connection string

C# 2010 parse a file

classy_dog23-Aug-12 17:49

classy_dog

23-Aug-12 17:49

In a C# 2010 application that I will be writing, I am trying to decide if I should use regular expression or use a parsing routine to get to the nodes of an xml file I will be working with.

The xml file I receive is not to update my database locally. My response will update the database on the remote site.

Basically I will be obtaining an xml file from a remote web service. When I look at all the results that this web service gives to me, I can uniquely identify patterns in the data that would be appropirate for regular expressions.

However there will be times when I obtain a list of key values that occurs 1 to 500 times. Thus i am wondering if this type of parsing is possible using regular expressions. If so, how would I do that type of parsing with regular expressions?

Also, can you tell me and/or point me to a reference that will tell me how to accomplish this task, using a built in xml parser or code that shows how to parse xml?

Re: C# 2010 parse a file

pramod.hegde23-Aug-12 20:05

http://msdn.microsoft.com/en-us/library/bb468714.aspx[^]
http://sourcefield.blogspot.in/2008/11/linq-transformation-sample-xml.html[^]
http://www.java2s.com/Code/CSharp/XML-LINQ/UseXElementParsetoparseanelementdocument.htm[^]
http://geeksneversleep.com/tutorials/c-xml-and-linq-deleting-an-xml-node[^]

23-Aug-12 20:05

You can use LINQ to XML approach to achieve this. One major advantage with this approach is less coding, and easy to traverse in DOM tree. Also, you can easily get the DOM objects. Insert/Delete/Update xml file/string is pretty easy here. You can work with linq statements to get the objects like to any other collection.
There are many samples which will show you how to use LINQ with XML.
LINQ to XML[^]
http://www.dreamincode.net/forums/topic/218979-linq-to-xml/[^]
http://www.dotnetperls.com/xelement[^]

Most of these links help you to load the xml file itself. Whereas if you have the xml string, then its still more easy,

XElement xmlElement = XElement.Parse(xmlString);

Re: C# 2010 parse a file

wizardzz24-Aug-12 9:54

wizardzz

24-Aug-12 9:54

This is basically what I do for a living these days. This class is going to help you greatly: http://msdn.microsoft.com/en-us/library/system.xml.linq.xdocument.aspx[^]

I use regex pretty sparsely because I can hardly ever depend on the quality of the xml data I'm getting.

[Problem Solved] how to access a class of a file A.cs from other file B.cs

jamesfrj23-Aug-12 13:33

Re: how to access a class of a file A.cs from other file B.cs

23-Aug-12 13:33

Hello everyone! I am a new in C# and was trying to access a class from another.

I have created the file Cliente.cs below:

class Cliente
{
	public string nome;
	public int codigo;
}

Afterwards I have created the file TestaCliente.cs with this code:

class TestaCliente
{
	static void Main()
	{
		Cliente c1 = new Cliente();
		c1.nome = "Rafael Consentino";
		c1.codigo = 1;
		
		Cliente c2 = new Cliente();
		c2.nome = "Jonas Hirata";
		c2.codigo = 2;
		
		System.Console.WriteLine(c1.nome);
		System.Console.WriteLine(c1.codigo);
		
		System.Console.WriteLine(c2.nome);
		System.Console.WriteLine(c2.codigo);
	}

}

I have tried to compile the file TestaCliente.cs via command prompt with "csc TestaCliente.cs" and the following error message appears :

Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1
Copyright (C) Microsoft Corporation. All rights reserved.

TestaCliente.cs(6,4): error CS0246: The type or namespace name 'Cliente' could
not be found (are you missing a using directive or an assembly
reference?)
TestaCliente.cs(6,21): error CS0246: The type or namespace name 'Cliente' could
not be found (are you missing a using directive or an assembly
reference?)
TestaCliente.cs(10,4): error CS0246: The type or namespace name 'Cliente' could
not be found (are you missing a using directive or an assembly
reference?)
TestaCliente.cs(10,21): error CS0246: The type or namespace name 'Cliente' could
not be found (are you missing a using directive or an assembly
reference?)

Obs.:The files are in the same folder.

What am I doing wrong?

Thank you

modified 30-Aug-12 6:32am.

harold aptroot23-Aug-12 14:42

harold aptroot

23-Aug-12 14:42

jamesfrj wrote:
What am I doing wrong?

This:

jamesfrj wrote:
tried to compile .. via command prompt

Why would you ever do that? It's just going to cause trouble.

But it's possible, of course. One option is to compile "*.cs" (ie all .cs files in the folder).
For more info, see: Working with the C# 2.0 Command Line Compiler[^]

Re: how to access a class of a file A.cs from other file B.cs

jamesfrj30-Aug-12 0:25

Re: how to access a class of a file A.cs from other file B.cs

30-Aug-12 0:25

Thank you!

pramod.hegde23-Aug-12 20:12

Re: how to access a class of a file A.cs from other file B.cs

23-Aug-12 20:12

Few Points:
1. Its better to have namespaces & separate class files.
So, Cliente.cs would contain

namespace TestNs
{
    public class Cliente
    {
        public string nome;
        public int codigo;
    }
}

and TestaCliente.cs would contain

namespace TestNs
{
    class TestaCliente
    {
	static void Main()
	{
		Cliente c1 = new Cliente();
		c1.nome = "Rafael Consentino";
		c1.codigo = 1;
		
		Cliente c2 = new Cliente();
		c2.nome = "Jonas Hirata";
		c2.codigo = 2;
		
		System.Console.WriteLine(c1.nome);
		System.Console.WriteLine(c1.codigo);
		
		System.Console.WriteLine(c2.nome);
		System.Console.WriteLine(c2.codigo);
	} 
    }
}

2. Compile them.

csc TestaCliente.cs // this gives error. Because the compiler is not able to identify the reference class file.

Fix for it. Include the other referred files also.

csc TestaCliente.cs Cliente.cs       // You need to include as many classes as you refer.

This would create an .exe file.

3. Execute the generated .exe

TestaCliente.exe //this exe will be there in the same folder where you have your class files.

Result:

Rafael Consentino
1
Jonas Hirata
2

Hope I answered the question

Pete O'Hanlon23-Aug-12 23:00

Re: how to access a class of a file A.cs from other file B.cs

23-Aug-12 23:00

You haven't actually answered the question that was asked. That question was really, why didn't the csc.exe compile the two class files together.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

pramod.hegde23-Aug-12 23:04

Re: how to access a class of a file A.cs from other file B.cs

23-Aug-12 23:04

I have answered it. It was due to namespace. I have placed classes under a namespace and it works.
That's what I commented at last. 'Try this solution and the program should work'.

Pete O'Hanlon23-Aug-12 23:27

Re: how to access a class of a file A.cs from other file B.cs

23-Aug-12 23:27

A couple of points. The practice of putting multiple classes in one file should be discouraged. It becomes harder and harder to keep separation in your classes if you can't even be bothered to separate your code - never recommend something that shouldn't be done in a professional environment; if you did it working for me, I would make you fix it.

Second, read the title of the thread - it's how to access a class in one file from another file. Not, what hack can I do to get round this.

So, you have not answered the question.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

pramod.hegde23-Aug-12 23:51

Re: how to access a class of a file A.cs from other file B.cs

23-Aug-12 23:51

Few Points:
1. Its better to have namespaces & separate class files.
So, Cliente.cs would contain

namespace TestNs
{
    public class Cliente
    {
        public string nome;
        public int codigo;
    }
}

and TestaCliente.cs would contain

namespace TestNs
{
    class TestaCliente
    {
	static void Main()
	{
		Cliente c1 = new Cliente();
		c1.nome = "Rafael Consentino";
		c1.codigo = 1;
		
		Cliente c2 = new Cliente();
		c2.nome = "Jonas Hirata";
		c2.codigo = 2;
		
		System.Console.WriteLine(c1.nome);
		System.Console.WriteLine(c1.codigo);
		
		System.Console.WriteLine(c2.nome);
		System.Console.WriteLine(c2.codigo);
	} 
    }
}

2. Compile them.

csc TestaCliente.cs // this gives error. Because the compiler is not able to identify the reference class file.

Fix for it. Include the other referred files also.

csc TestaCliente.cs Cliente.cs       // You need to include as many classes as you refer.

This would create an .exe file.

3. Execute the generated .exe

..\Microsoft Visual Studio 10.0\VC>TestaCliente.exe

Result:

Rafael Consentino
1
Jonas Hirata
2

Hope I answered the question Smile | :)

Pete O'Hanlon24-Aug-12 0:04

Re: how to access a class of a file A.cs from other file B.cs

24-Aug-12 0:04

You have, but you should reply to the OP here, not me. He doesn't get notifications of replies to me (one minor point, I would remove the Microsoft Visual Studio reference from the path as that could just end up confusing him).

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

jamesfrj24-Aug-12 4:44

Re: how to access a class of a file A.cs from other file B.cs

24-Aug-12 4:44

Thank you, pramodhegde88! It worked perfectly. Smile | :)

Bernhard Hiller23-Aug-12 22:51

Bernhard Hiller

23-Aug-12 22:51

Better use Microsoft Visual Studio. If you don't want to purchase a full version, you can get the "Express" edition for free. Just use the "Build" menu.

Re: how to access a class of a file A.cs from other file B.cs

jamesfrj30-Aug-12 0:30

Re: how to access a class of a file A.cs from other file B.cs

30-Aug-12 0:30

You're right. That happened because I was following a tutorial that does not use Visual Studio.
Thank you

BobJanova23-Aug-12 22:54

BobJanova

23-Aug-12 22:54

When you're compiling a C# application or library, you have to include all the files you want to be compiled into the assembly.

If you want both of these files in the same assembly:

csc *.cs /out:TestaCliente.exe

csc TestaCliente.cs Cliente.cs

If you want a separate .dll for the first class, you can first create that with

csc /t:library Cliente.cs

... and then reference it like

csc TestaCliente.cs /r:Cliente.dll

In general, though, it makes more sense to use an IDE to manage your files as a project. I recommend SharpDevelop.

Edit: An IDE will do exactly the same thing, but it will construct the command for you even when it gets very complex, chain builds together for multiple assemblies and so on.

Re: how to access a class of a file A.cs from other file B.cs

jamesfrj30-Aug-12 0:22