Regex problem [modified] - C# Discussion Boards

Re: query check field which has a _

pmarfleet7-Dec-07 3:44

pmarfleet

7-Dec-07 3:44

Did you read the documentation under the section I mentioned?

Paul Marfleet

"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush

Windows Service Application

Chandan_Kr7-Dec-07 2:31

Chandan_Kr

7-Dec-07 2:31

Hi,

I want to create a Reminder application (windows application using C#.net)which need to be started as soon as system gets boot up. To acheive this task I need to use windows service application but I think windows service application doesn't support GUI application So can any one plz help me out to find the solution.

My main requirement is:-
1. Application needs to be started as soon as computer started.
2. It should have a GUI.

If you know the solution then plz let me know ASAP.

Best Regards,
Chandan Kumar Gupta

Re: Windows Service Application

Pete O'Hanlon7-Dec-07 2:38

Pete O'Hanlon

7-Dec-07 2:38

Chandan_Kr wrote:
I think windows service application doesn't support GUI application

It can. It's not good practice, but it can.

You could always put something in the startup folder to autostart.

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

My blog | My articles

Re: Windows Service Application

Matthew Butler7-Dec-07 2:42

Matthew Butler

7-Dec-07 2:42

I agree, you can get the path using this:

Environment.GetFolderPath(Environment.SpecialFolder.Startup);

The first time you start the program (manually) you could make a shortcut to the application in this folder.

Matthew Butler

Regex problem

Member 30793837-Dec-07 2:17

Member 3079383

7-Dec-07 2:17

I have a string as
loadplaylist "playlistname=xyz";instancename=abc"

I have written regex as
[^\p{Cc}\\r\\n\\a\\e\\b\\t][\S]*[a-zA-Z0-9\p{Po}\s\p{Sm}]*[^\p{Cc}\\r\\n\\a\\e\\b\\t]
which will remove tabs, backspaces.......and many more from the leading and trailing sides of string.

But, how I can remove the tab and backspace if it is in middle of string as

loadplaylist "playlistname=\txyz";instancename\b=abc" -----\t and \b are included which is to be removed.

Please do help........

Thanks & Regards
Kapil

Re: Regex problem

Matthew Butler7-Dec-07 2:29

Matthew Butler

7-Dec-07 2:29

I've never used Regex before...

However why not use:

string s = "  some thing  ";
s = s.Replace(" ", "");
s = s.Replace("\t", "");
// ...etc

Is there any reason why you are using Regex?

Matthew Butler

Re: Regex problem

Skippums7-Dec-07 4:06

Skippums

7-Dec-07 4:06

First of all, why are you matching the above characters instead of just using the \w (word characters) and \s (whitespace characters) character classes? It appears you are trying to do something like the following (with slightly more control)

myString = myString.Trim();

Second, if you really want to remove things in the middle, instead of a regex do the following:

myString = myString.Replace("\t", string.Empty);
myString = myString.Replace("\b", string.Empty);

-Jeff

Regex problem [modified]

t4ure4n7-Dec-07 1:42

t4ure4n

7-Dec-07 1:42

I have a method which uses regex.... shown below

<b>string pattern = "(?<before>.*)(?<junk><table class="MyTable" cellspacing="2" cellpadding="1" width="144" border="0">.*</table>)(?<after>.*)";
string matchEvaluator = "${before} ${after}";
try
{
local_string = Regex.Replace(local_source, pattern, matchEvaluator);
}
catch (Exception er)
{
string g = er.Message;
}

string wr = HTMLWriter.htmlWriter.WriteHTMLFile(@"C:\trimExtras.html",
local_string);</after></junk></before></b>

I want to remove certain part of html page with this regex
the problem is it does not work... it takes a long time i.e hangs the app and when i write it to html file its still the same i.e does not replace any thing

<div class="ForumMod">modified on Friday, December 07, 2007 7:52:14 AM</div>

Re: Regex problem

J4amieC7-Dec-07 1:46

J4amieC

7-Dec-07 1:46

Question: A curiosity, doubt, or statement inquiring about something.

Did you forget something?

query displaying data

eyeseetee7-Dec-07 1:32

eyeseetee

7-Dec-07 1:32

string test0002 = "Select room_code from room_types where room_code = '" + room_code + "'";

int max2;
SqlCommand cmd17 = new SqlCommand();
cmd17.Connection = con2;
cmd17.CommandText = test0002;
max2 = (int)cmd17.ExecuteNonQuery();
lbtest1.Text = max2.ToString();

hey is there a problem with the code above as its not displaying the data it is meant to, is there another way t display data from a query quickly/
cheers

Re: query displaying data

Abhijit Jana7-Dec-07 1:47

Abhijit Jana

7-Dec-07 1:47

did u get any error while running this code? Roll eyes | :rolleyes:

Best Regards
-----------------
Abhijit Jana
View My CodeProject Articles

"Success is Journey it's not a destination"

Re: query displaying data

J4amieC7-Dec-07 1:48

J4amieC

7-Dec-07 1:48

The return value from ExecuteNonQuery is the number of rows affected. In the case of a Select statement this will usually be zero.

You shold use ExecuteScalar to get a single return value from your select statement, or ExecuteReader to get more than one return value.

Re: query displaying data

Pete O'Hanlon7-Dec-07 2:17

Pete O'Hanlon

7-Dec-07 2:17

Please consider renaming your command to something more meaningful than cmd17, and don't use inline SQL like this - it's wide open to SQL Injection attacks. This[^] article should help.

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

My blog | My articles

How to show text in textbox which is used in a method and it is called through thread timer. The real problem is shown on below code. Where text box value is not shown on text box of form while its value is shown on mesage box.

S a n d y7-Dec-07 1:10

S a n d y

7-Dec-07 1:10

-------------------Program.cs--------------

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace WindowsApplication1
{
static class Program
{
[STAThread]
static void Main(string[] args)
{
Application.SetCompatibleTextRenderingDefault(false);
Form1 obj = new Form1();
TimerCallback tcallback = new TimerCallback(obj.Child);
ThreadPool.QueueUserWorkItem(new WaitCallback(tcallback));
long dTime = 1000 ;
long pTime = 10000 ;
System.Threading.Timer atimer = new System.Threading.Timer(tcallback, null, dTime, pTime) ;

Application.EnableVisualStyles();
Application.Run(new Form1());
}
}
}

-------------------------------------------------------------------------

----------------------------------------Form1.cs-------------------------

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

public void Child(object state)
{
//textBox1.Text is the problem. This value is not shown on form.
textBox1.Text = "Some Text";
MessageBox.Show(textBox1.Text);
}
}
}

-------------------------------------------------

Re: How to show text in textbox which is used in a method and so on...

m@u7-Dec-07 1:43

m@u

7-Dec-07 1:43

Hi..

Nice Subject Big Grin | :-D

you can not change the text of a control from another thread.
try the following:

public void Child(object state)
{
    if (textBox1.InvokeRequired)
    {
        Invoke(new TimerCallback(Child),new object[]{state}); // Invoke the called method through Message-Loop
    }
    else
    {
        textBox1.Text = "Some Text";  // Interact with the Control
        MessageBox.Show(textBox1.Text);
    }
}

alternatively you could also use System.Windows.Forms.Timer instead of the one in the Threading - Namespace. then you wouldn't have to use Invoke.
hope this helps
m@u

increment problem

eyeseetee7-Dec-07 0:58

eyeseetee

7-Dec-07 0:58

Hi
I ahve the following problem

I ahve a field in a database with field format jh00~pr11_ 01

howecer when a person adds a new row i need the last number to autoincrment so the next one would be: jh00~pr11_ 01

however the problem is i cant do this in the database end i need to do it in c#

any starters or suggestions?

cheers

Re: increment problem

Abhijit Jana7-Dec-07 1:05

Abhijit Jana

7-Dec-07 1:05

Jamie1985 wrote:
I ahve a field in a database with field format jh00~pr11_ 01

howecer when a person adds a new row i need the last number to autoincrment so the next one would be: jh00~pr11_ 01

Boot the string looking same !!!

I belive it will be incremented in jh00~pr11_02,jh00~pr11_03 this way ???

if this !! use Substring() and indexof() for that !!!

you can find position of _ using indexof

hope this will help !!!

Best Regards
-----------------
Abhijit Jana
View My CodeProject Articles

"Success is Journey it's not a destination"

Re: increment problem

Anthony Mushrow7-Dec-07 1:13

Anthony Mushrow

7-Dec-07 1:13

Yeah, you could probably use .Split on the underscore:

string db  = "jh00~pr11_01";
string[] split = db.Split('_');

string s_number = split[1];
int i_number = Int32.Parse(s_number);

i_number++;
s_number = i_number.ToSrting();

db = split[0] + "_" + s_number;

There's probably stuff wrong with that code, but you get the idea.
Separate the number from the rest of the string, increment it, and add it back on.

My current favourite word is: Bauble!

-SK Genius

Re: increment problem

eyeseetee7-Dec-07 1:41

eyeseetee

7-Dec-07 1:41

thats great thanks
how would i make it 02 on the end instead of just 2 as its doing at the mo?
cheers!! Smile | :)

Re: increment problem

Anthony Mushrow7-Dec-07 2:57

Anthony Mushrow

7-Dec-07 2:57

of course, use .PadLeft(2, '0'); which will add 0's to the start until the length of the string is 2

My current favourite word is: Bauble!

-SK Genius

How to handle the Datagridview Default error dialog

Haj7-Dec-07 0:37

Haj

7-Dec-07 0:37

On invoking the form that contains the Datagrid view the DataGridView Default Error Dialog appears...
I am unable to handle this event. Can anyone tell how to prevent this dialog from appearing.

Re: How to handle the Datagridview Default error dialog

sdk_codemaker_20057-Dec-07 0:52

sdk_codemaker_2005

7-Dec-07 0:52

I am pretty sure there has to be a method after that.

but i dont no if that is write.

ollie

Re: How to handle the Datagridview Default error dialog [modified]

Haj7-Dec-07 1:33

Haj

7-Dec-07 1:33

Thank you ollie for your reply...

I have resolved the problem...

Using the DataGridView.DataError event and catching the exact error worked out...

modified on Friday, December 07, 2007 7:46:56 AM

Re: How to handle the Datagridview Default error dialog

sdk_codemaker_20057-Dec-07 4:23

sdk_codemaker_2005

7-Dec-07 4:23

no problem

try this

http://msdn2.microsoft.com/en-us/library/system.windows.forms.datagridview.dataerror.aspx[^]

http://www.google.co.uk/search?hl=en&q=DataGridView.DataError&meta=[^]

i hope they help

Read Class Name from Assembly

Abhijit Jana7-Dec-07 0:24

Abhijit Jana

7-Dec-07 0:24

Hi,
Is is possible to read all class name from a assembly.

USing reflection i can read class name and all other inforamtion of it. but i want to get the class name from some other Csproj file so i need to read the assembly of that file !!!!

Any idea !!!!

Thanks in advance !!!!

Best Regards
-----------------
Abhijit Jana
View My CodeProject Articles

"Success is Journey it's not a destination"

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