Re: UI, BLL and DA in different servers - C# Discussion Boards

Christian Graus6-Oct-07 23:30

6-Oct-07 23:30

I'm not sure I follow, but I'd use File.ReadAllText and File.WriteAllText ( or ReadAllLines/WriteAllLines ) to read/write the file. And if the changes are known, I'd just use string.Replace to do them.

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: Rich Text Box

Lutosław6-Oct-07 23:43

Lutosław

6-Oct-07 23:43

IMHO it's a single line of code:

File.WriteAllText(file, File.ReadAllText(file).Replace("XXX-XX", "(the .jpg)"));

A full program:

using System.IO;
namespace BLA {
static class Program{
static void Main(string[] files)
{
  foreach(string file in files)
     File.WriteAllText(file, File.ReadAllText(file).Replace("XXX-XX", "(the .jpg)"));
}}}

Greetings - Gajatko

Portable.NET is part of DotGNU, a project to build a complete Free Software replacement for .NET - a system that truly belongs to the developers.

Re: Rich Text Box

rowdykuttan7-Oct-07 2:27

rowdykuttan

7-Oct-07 2:27

It wont work since the.jpg has to be taken dynamically, its writing same file name for all XXX-XX

Setup Question

sajid.salim.khan6-Oct-07 23:11

sajid.salim.khan

6-Oct-07 23:11

i have made a small program i want to make a setupo f that i had also created login id so how to create a setup

sas

Re: Setup Question

Dave Sexton7-Oct-07 1:04

Dave Sexton

7-Oct-07 1:04

File > New Project > Setup & Deployment Project

But fortunately we have the nanny-state politicians who can step in to protect us poor stupid consumers, most of whom would not know a JVM from a frozen chicken. Bruce Pierson

Re: Setup Question

il_masacratore8-Oct-07 21:31

il_masacratore

8-Oct-07 21:31

Read this article, here you have a sample:
http://www.codeproject.com/dotnet/Win_App_Setup_Project.asp

Visit my blog at http://dotnetforeveryone.blogspot.com/

UI, BLL and DA in different servers

mukkanti0076-Oct-07 22:34

mukkanti007

6-Oct-07 22:34

hi all,
in my .net application i have my ui in one server and business logic in one server and database from another server,

how can i establish communicatin between these 3 servers

if i want to get dabase info into code behind how can i access the data

Could some one help me

Thanks
sri

Re: UI, BLL and DA in different servers

lmoelleb6-Oct-07 23:15

lmoelleb

6-Oct-07 23:15

Use ADO.NET to communicate between business logic and the database (it will handle the network traffic for you). If your UI and business logic are on different servers "Windows Communication Foundation" surprisingly enough can be used as a foundation to communicate between two Windows servers. Smile | :)

If you are stuck with the outdated 2.0 Framework you might have to use Remoting or old webservices for the communication instead. This pretty much forces you to make your own data transfer objects and other boring tasks.

You can also use DataSets to communicate from your business logic to the GUI - this allows you to reflect the database more or less unchanged in the GUI which greatly reduce development time for the "small" price of unmaintanable code. If you are a consultant who only needs to make sure there is a future revenue stream it might be the way to go. If you do use datasets, please make sure to put this in the subject of future code project posts so I won't open them by accident and get sick. Smile | :)

checking files using c#

ramyanaidu6-Oct-07 20:23

ramyanaidu

6-Oct-07 20:23

plz any one help i need code in c# for checking afile is exisisting if it exists display that file if does not exists create a file in any folder using c# its very urgent if any ine have htis in vb.net also u can give me thanks

Re: checking files using c#

lmoelleb6-Oct-07 21:43

lmoelleb

6-Oct-07 21:43

If you need code, then it's lucky you know how to program isn't it? If not I can send you my consultancy fees - an "urgent" job on a Sunday oh boy oh boy this is going to cost you. Do you have a house you can sell, I'm not quite sure selling the car will do it? Smile | :)

1) Look at System.IO.File.Exists (static method), or alternative System.IO.FileInfo.Exists (member method on the FileInfo class)
2) Opening it is not clear enough. Do you want it to open with the standard registered program (so if it is a .doc file start Word) or display the data in your own program.
If you want to open with the registered program, look at System.Diagnostics.Process.Start (you can give it a path to the file and it will resolve the correct executable for you). If you need to display it yourself use the System.IO namespace to read file (FileStream/StreamReader/BinaryReader are classes you need to know), then build whatever GUI required on top of the data using whatever you require and are familier with: WinForm, ASP.NET, or WPF.

Re: checking files using c#

BAIJUMAX7-Oct-07 5:19

BAIJUMAX

7-Oct-07 5:19

Check File class under IO .

"Well dude, There's Always Better Ways To Do Things.

BY
BAIJUMAX

Re: checking files using c#

Paul Conrad7-Oct-07 5:44

Paul Conrad

7-Oct-07 5:44

ramyanaidu wrote:
its very urgent

That is a very rude thing to say around here.

Your post is a simple one that a quick google search can do for you.

"Find it your bloody self - immediately!" - Dave Kreskowiak

Getting InvalidOperationException when I modify an arraylist

humblepgmr6-Oct-07 19:51

humblepgmr

6-Oct-07 19:51

foreach (myobject value in copy){
...
copy.RemoveAt(copy.IndexOf(value));
...
}

The first iteration works okay, but when the loop starts again, it throws and InvalidOperationException.

Any thoughts as to how I can remove an element within the arraylist whilst still using the same list?

Re: Getting InvalidOperationException when I modify an arraylist

Luc Pattyn6-Oct-07 20:24

Luc Pattyn

6-Oct-07 20:24

Hi,

I see two ways to get rid of it:

1.
use a second ArrayList:
1a. if only a few to remove, store the indices to be removed in another empty ArrayList,
then in a second loop, remove those (warning: indices change while removing, so best
do the second loop backwards)
1b. if most of them to be removed, start a new ArrayList and copy the items you want to
keep, then throw away the original ArrayList

OR

2.
don't use foreach, instead use a for loop that runs backwards (or compensate for the
indices changing when removing).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google

Re: Getting InvalidOperationException when I modify an arraylist

Matthew Cuba7-Oct-07 10:33

Matthew Cuba

7-Oct-07 10:33

humblepgmr wrote:
foreach (myobject value in copy){
...
copy.RemoveAt(copy.IndexOf(value));
...
}

Hi there,

There was some information at Microsoft about this. You might consider checking out http://support.microsoft.com/kb/555972 to read about it. Looks like a workaround involves creating a copy of the collection within the foreach loop.

Good Luck!

You can't teach people to be lazy - either they have it, or they don't.
-Dagwood Bumbstead

Re: How do you sort an ArrayList of customObjects?

Dave Kreskowiak6-Oct-07 15:49

Dave Kreskowiak

6-Oct-07 15:49

humblepgmr wrote:
aList.sort(); //this doesn't work

Obviously. The Sort method doesn't have any clue how to compare and sort your objects. So, you have to provide an IComparer[^] implementation to compare two of your objects and return the result of the compare.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Re: How do you sort an ArrayList of customObjects?

Pete O'Hanlon7-Oct-07 10:34

Pete O'Hanlon

7-Oct-07 10:34

Talking to yourself again?

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

Re: How do you sort an ArrayList of customObjects?

Dave Kreskowiak7-Oct-07 15:52

Dave Kreskowiak

7-Oct-07 15:52

I know. Workin' for the government is drives you to drink. You end up in a dark corner babbling to yourself like an idiot. Unsure | :~

It'll pass in a few short weeks.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Semi-Random Array Sorting

BaraMustafa6-Oct-07 15:10

BaraMustafa

6-Oct-07 15:10

I have an class defined as below. This class has an integer value assigned to it named initiative. For the purposes of this post this value can be from 1 to 3.

<br />
public class Unit : IComparable<br />
{<br />
    ....<br />
    public int Initiative = ....;<br />
<br />
    public int CompareTo(object obj)<br />
    {<br />
        if (obj is Unit)<br />
        {<br />
            Unit u = (Unit)obj;<br />
            return Initiative.CompareTo(u.Initiative);<br />
        }<br />
        throw new ArgumentException("object is not a Unit");    <br />
    }<br />
}<br />

I have 10 of these objects defined in an array. I want to be able to sort the array by this initiative value however everytime I run a sort I want the object with equal value to be randomly organised. For example if I run sort once:

object - initiative
A - 1
B - 1
C - 1
D - 2
E - 2
F - 2
G - 3
H - 3
I - 3
J - 3

If I run it again, I may get:

object - initiative
B - 1
A - 1
C - 1
F - 2
D - 2
E - 2
G - 3
J - 3
H - 3
I - 3

How can I achieve this using IComparable?

Thanks in advance.

Re: Semi-Random Array Sorting

Christian Graus6-Oct-07 15:31

Christian Graus

6-Oct-07 15:31

if (obj is Unit)
{
Unit u = (Unit)obj;
if (obj == this) return Random.Next(2) - 1;

return Initiative

someting like that

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: Semi-Random Array Sorting

Lutosław6-Oct-07 22:09

Lutosław

6-Oct-07 22:09

Christian Graus wrote:
(obj == this)

This would compare references. Override == operator or write: (obj.Initiative == this.Initiative).

Greetings - Gajatko

Portable.NET is part of DotGNU, a project to build a complete Free Software replacement for .NET - a system that truly belongs to the developers.

Re: Semi-Random Array Sorting

Christian Graus6-Oct-07 23:31

Christian Graus

6-Oct-07 23:31

Sure - I was really just trying to show how to introduce some randomness. But thanks for adding this, it does make the overall answer more correct.

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 )

PLZ I Want to used xml file as database( how to add,update,delete and Search)

DiefAlla6-Oct-07 13:24

DiefAlla

6-Oct-07 13:24

PLZ I Want to used xml file as database(how to add,update,delete and Search)

i will make the database program
using interface C# and DataBase <xml>
thanks. Rose | [Rose]

Re: PLZ I Want to used xml file as database( how to add,update,delete and Search) [modified]

Dave Kreskowiak6-Oct-07 13:31

Dave Kreskowiak

6-Oct-07 13:31

You can want all you want. It's not going to change the fact that XML is NOT a database. You cannot use SQL statements to navigate through the tables. You have to use the various XML methods to modify your tables, but XML is very inefficient at it.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Re: PLZ I Want to used xml file as database( how to add,update,delete and Search)

Christian Graus6-Oct-07 13:49

Christian Graus

6-Oct-07 13:49

Dave Kreskowiak wrote:
You can't want all you want.

I don't think that is what you meant... :P

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 )

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