C# Discussion Boards - CodeProject

Re: How do I get an app to run on boot?

6-Jan-04 4:35

What do you think that Start->Programs->Startup folder is for? Just put a shortcut to your application in there, or add a registry key to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run to start it for the current user of the system (each user has their own person hive), or use HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run for all users of the machine. Be careful using the registry editor (regedit.exe) because anything you screw up could have disasterous results to applications or all of Windows.

-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----

cjengler6-Jan-04 5:49

cjengler

6-Jan-04 5:49

Thank you for your help. As a student finishing up his degree and carrying 18 hours in his final semester it is useful to have a board like this to help out when you have a brain freeze.

Of course it would be more helpful if some people didn't go so far out of their way to stroke their own ego by making others feel stupid (IE: What do you think....is fo?), when they ask a simple question. But I guess it was my own fault for asking a question.

Thanks again for all your help.
Joe

Re: How do I get an app to run on boot?

jparsons6-Jan-04 6:40

jparsons

6-Jan-04 6:40

If you want the app to run when a user logs in then the suggestions already provided are the best way to do it.

If you want the program to start on startup regardless of whether or not a user is logged in then you need to install the program as a windows service. There was a great article on how to do this on osnews just the other day. Below is a link

www.osnews.com[^]

Jared
jparsons@jparsons.org
www.prism.gatech.edu/~gte477n

Playing Mp3 file?

thomasa6-Jan-04 3:24

thomasa

6-Jan-04 3:24

Hey.

I am having a problem playing mp3 files from my application.
I use the lame.exe to convert to mp3 from wav.
I use directX to play it.

In WinAmp3 it sounds perfect, but in my (and directX SDK sample) application it flickers and it is inpossible to hear annything but scrambeling noise.
First time I tried it out, I got an error message, something like "d:\...dx...ampifier.cpp", I then reinstalled directX and now it sounds
like scrambeling noise.

Why???

In advance THANKS
Thomas
PS: Sorry about my english

Re: Playing Mp3 file?

Heath Stewart6-Jan-04 4:10

6-Jan-04 4:10

Something might be wrong with the code - which you didn't post, so there's no way to help you. Please try posting some sample code - not the entire application.

It might also be better to post this in the Microsoft public newsgroups at news://msnews.microsoft.com[^] for the applicable DirectX newsgroup. This seems more like a problem with DirectX than a programming question if the samples aren't even working correctly.

Re: Playing Mp3 file?

thomasa6-Jan-04 4:38

thomasa

6-Jan-04 4:38

I think I found the problem.
The encoding param I used in lame.exe was
"-b 32 --resample 22.05 -m m \"....
I changed them to
"-f \"....

and now it works
Smile | :)

days of week

mnaveed6-Jan-04 1:16

6-Jan-04 1:16

hi
wot is the best way to get the days of current week or any week in year when developing C# and asp.net application. i m using the calendar control.
thank you for your help.

do it man

Mazdak6-Jan-04 1:39

Mazdak

6-Jan-04 1:39

DateTime.DayOfWeek property.

Mazy

No sig. available now.

mnaveed6-Jan-04 2:21

6-Jan-04 2:21

how can we get the seven days a whole week of particular date.not a particular day of week.
thank you

do it man

Mazdak6-Jan-04 2:28

Mazdak

6-Jan-04 2:28

I can't understand you,could you give an example about what you want?

Mazy

No sig. available now.

Heath Stewart6-Jan-04 2:30

6-Jan-04 2:30

Get the CultureInfo for the language/culture for which you want the names and use the DateTimeFormat property:

CultureInfo culture = Thread.CurrentCulture;
string[] days = culture.DateTimeFormat.DayNames;

mnaveed6-Jan-04 3:55

6-Jan-04 3:55

i want to get the 7 dates of week. like if today is the 6 jan in calendar control 2nd day of current week. i want to get all the 7 dates from monday to sunday from(5-01-04 to 11-01-04)how can i get thoes dates from calender control.did u get my point or not.

thank you.

do it man

Heath Stewart6-Jan-04 5:03

6-Jan-04 5:03

First of all, Tuesday, January 6th, 2004 is not the 2^nd day of the week in the en-US culture - nor in many other cultures - it is the 3^rd. This all comes down to culture-specific information. Use the following to get what the day of week is for the specific culture:

CultureInfo culture = Thread.CurrentCulture;
int dayOfWeek = (int)culture.Calendar.GetDayOfWeek(DateTime.Now);

An enum like DayOfWeek can be cast to an int. In this case, the DayOfWeek members correspond to the number for the week, i.e. Sunday = 0, Monday = 1, Tuesday = 2, etc. You should add 1 to this value since most people think in base 1, not base 0.

mnaveed6-Jan-04 5:52

6-Jan-04 5:52

Thank you very much for your help Rose | [Rose]

could u give me some help that how can i create a Year View calendar in ASP.net in which i can show the user all the 12 month of a year and can navigate through diff years.

Thank you once again for your help.

do it man

Creating CSV files

MrEyes6-Jan-04 0:16

MrEyes

6-Jan-04 0:16

This isnt really a question relating to C# but the application that I am working on is written in C# and there isnt really another forum section which is relevant to my question.

Within my application I am taking various values pulled from an MS SQL database and creating a comma delimited CSV file, the problem is that the values in the db have various /n and and /r. In previous versions I have simply stripped this out as if they are present it causes the stream writer to generate incorrect CSV's. The problem is that, as a result of stripping these out, I loose any formatting.

An example is this query :

SELECT val1, val2, val3, val4 FROM table

The code then generates the following CSV file :

val1, val2, val3, val4
abc, def, ghi, jkl

Does anybody know of a way of creating the CSV with the /n and /r included? Double Quoting? Escaping?

post.mode = signature;
SELECT everything FROM everywhere WHERE something = something_else;
> 1 Row Returned
> 42

Re: Creating CSV files

Heath Stewart6-Jan-04 4:26

getting intercept point of lines??

6-Jan-04 4:26

Use a TextWriter and while writing each line, parse the string for each delimited value. If it contains a quote, carriage return, or line feed, quote the string. In the case that it does contain a quote, double-quote it. There really is no other escaping defined for common CSV (keep in mind there's really no "standard"). Excel displays carriage return, line feeds as boxes but a lot of other programs should accept it.

reading from DB

hadi20sa5-Jan-04 22:37

hadi20sa

5-Jan-04 22:37

Hi everyone
I have a problem when i try to read from database. the exception message says
Unspecified error: E_FAL_(0x80004005)

any one can help me?

Error image
Error image

Re: reading from DB

Mazdak6-Jan-04 0:35

Mazdak

6-Jan-04 0:35

What is your code that this happend and which line?

Mazy

No sig. available now.

Re: reading from DB

Anonymous6-Jan-04 23:18

Anonymous

6-Jan-04 23:18

The code is included in this file

the error message is also here

regards;

azusakt5-Jan-04 22:25

azusakt

5-Jan-04 22:25

Hi members,
I would like to ask is there any fast way to get the intercept point of any 2 lines?
I have drawn many lines over the screen, and now want to point the red color circle on their intercepts.

Could someone give me some idea?

Thanks for help

Re: getting intercept point of lines??

Xiangyang Liu 刘向阳5-Jan-04 23:51

Xiangyang Liu 刘向阳

5-Jan-04 23:51

What you need to do is solving linear equations. As you (may) know from college mathematics, the equation of a straight line on a X-Y plane has the following form:

y = kx + b

unless it is a vertical line, in which case the equation has the form

x = b

Here k and b are constants. If you know the equations of the two lines, then the coordinates of the intersecting point (if exists) will be the solution (x, y) of these two equations. So what you need to do is:

a) Find the equation of the two lines.
b) Determine if they have an intersecting point.
c) Find the intersecting point by solving these two equations for x and y.

a) You need to know two different points on each line. Say (x1, y1) and (x2, y2). If x1 = x2, then the line is vertical, the equation is x = x1. Otherwise, the equation is y = kx + b, where k = (y2-y1)/(x2-x1) and b = y1 - x1(y2-y1)/(x2-x1).

b) Suppose you already have the equations of the two lines: y = k1 x + b1 and y = k2 x + b2. If k1 = k2, then the two lines are parallel (there is not intersecting point). If the two lines are both vertical, then there is no intersecting point either. Otherwise the intersecting point exists (but it may not be on the screen, it may be 200 miles away).

c) After a) and b), you can solve the two equations to get the coordinates of the intersecting point. This is left as an exercise. Wink | ;)

Hope you are not bored with the above lecture. Poke tongue | ;-P

P.S. By the way, this is very fast. Even if you have 100 pairs of lines, the code you write will be executed instantly.

My articles and software tools

how to change dos prompt caption!

yu-yu5-Jan-04 21:12

yu-yu

5-Jan-04 21:12

Hello,
I would like to change dos prompt caption using C#.
Usually, we kicked bat file using Process.start() or double click, dos prompt caption is "c:\WINNT/system32/cmd.exe".
I would like to change another title.

If you have some solutions, please tell me.

best regards,

yu-yu

Re: how to change dos prompt caption!

Philip Fitzsimons6-Jan-04 2:54

Philip Fitzsimons

6-Jan-04 2:54

just use the title command in the bat file
title mytitle

"When the only tool you have is a hammer, a sore thumb you will have."

Re: how to change dos prompt caption!

Heath Stewart6-Jan-04 3:16