Arithmetic in datagrid columns

Question

Hi,

I have a datagrid with the columns ItemPrice and ItemQuantity and Total, I would like to multiply the ItemPrice and ItemQuantity columns to get the total. I've tried searching around but in vain, I know its been done before and I've seen multiple software systems do this. Could someone help me.

Answer 1

I have quite a bit of information source code and tutorials for axmediaplayer on my site.

http://electriac.googlepages.com/wmplayer.exe

Answer 2

i think you will find you do use c# directly otherwise what language are you using?with c# being a managed language i wouldn't recomend unmanaged direct x although nBass is quite good but lack of documentation

Answer 3

its real easy. i dont use c# directly. i use either directShow, a part of directX, or nBASS, a sound liberary written in c#. you can find them both on www.codeproject.com . just type in their names in the search box and you should get them.hopw this is useful

Answer 4

hey, i have written an mp3 player in c#. i use managed directx version 9 and it could not be simpler. You pass a path name to a newly created Audio object and call its .play() method. There are methods like stop(), pause() , etc. It's all very simple. You can download the directx SDK from the microsoft website (bout 165MB download) or simply email me and i can send you the DLL files. After that you can get the documentation from microsoft.com Any questions or queries just contact me, Sailor

Answer 5

Okay, I got the same when I tested it. Did you set the "player.FileName" or "player.Open()" as I found both gave an error. I would suggest looking through MSDN online and seeing what they say about the MediaPlayer Libraries. Sorry I can't be of more help, but if I find the answer I will post it here.

Answer 6

ok i got it but it's not perfect, i got an error when i launch the programm Error is on player.Play() PS : no, i'm not new to programming but it's the first time i used OCX

Answer 7

Declare the AxMediaPlayer z.B. AxMediaPlayer player = AxMediaPlayer.AxMediaPlayer; to play an MP3: player.FileName = ; Do you know VB or are you new to programming? Lee

Answer 8

yok, but it's in Visual Basic and i can't find the part which allow to play MP3 files ......

Answer 9

http://www.planet-source-code.com/vb/scripts/ShowCode.asp?lngWId=10&txtCodeId=1593 I have found the article, it's in vb.net, but it's not hard to translate. I hope this helps you, Lee

Answer 10

yes, but it doesn't help me :-\

Answer 11

There's a search feature in the forums. ;) http://216.26.160.137/Forums/AspNetForums20/ShowPost.aspx?PostID=2769 One topic is enough.

Answer 12

I seem to remember seeing something about this on Planetsource.com, but not sure where. Lee