C# Discussion Boards - CodeProject

david cohoon27-Jun-05 7:41

27-Jun-05 7:41

If you want the rows to remain as MODIFIED, do not call AcceptChanges(). By calling AcceptChanges() you are commanding the data row(s) to end the current edit.

Re: Datasets & RowStates

Luis Alonso Ramos27-Jun-05 9:30

Luis Alonso Ramos

27-Jun-05 9:30

The idea is that you perform the editions on the rows (add, delete, modify) and then, somewhere else, you check which rows have been modified and save only those to the database. You then call AcceptChanges. Then, after the next set of changes, only the newly-changed rows will require saving to the real database.

If you use a data adapter, it automatically calls AcceptChanges in Update after updating the database.

-- LuisR

Luis Alonso Ramos
Intelectix - Chihuahua, Mexico

Not much here: My CP Blog!

shared folders

amarsumanth27-Jun-05 4:54

amarsumanth

27-Jun-05 4:54

I m having a problem, where i need to display shared folders of a computer in C#. Like i enter a computer name and it has to display shared folders in windows explorer. i don't know how to do it? can anybody guide?

Amar

Re: shared folders

Judah Gabriel Himango27-Jun-05 8:57

Judah Gabriel Himango

27-Jun-05 8:57

You'll need to utilize the Windows Shell APIs. This site has several articles on how this is done, search for 'shell' C# articles and you should get a few hits.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Conversation With a Muslim
Judah Himango

Are you good with Maths API

hasanali0027-Jun-05 4:05

hasanali00

27-Jun-05 4:05

I wonder if u can help me in solving the following problem:

I want to divide a number by 10 and get the result as the highest number.

Let me explain with following examples:
13/10 = 2 and
27/10 = 3

How can I achieve this
thanks

Re: Are you good with Maths API

DavidNohejl27-Jun-05 4:13

DavidNohejl

27-Jun-05 4:13

Math.Round( (a / 10) + .5 ) ?

David

Re: Are you good with Maths API

mav.northwind27-Jun-05 4:19

mav.northwind

27-Jun-05 4:19

How about (int)((n+9)/10) ?
You can even skip the (int) if your n already is an int...

mav

Re: Are you good with Maths API

Roger Wright27-Jun-05 4:28

Roger Wright

27-Jun-05 4:28

Not knowing C# I can't give you the proper code, but in pseudo-code:

If (x - int(x)) > 0.00
return int(x) + 1
else
return int(x)

Unlike the rounding function, which will round down as well as up, this will return either the original input, if it is an integer, or the next higher integer if it contains any fractional part at all. You may still get some goofy errors, though, because the input might have some small fractional part due to previous calculations. There are ways to get around that, but they may not be necessary depending upon your application.

"...putting all your eggs in one basket along with your bowling ball and gym clothes only gets you scrambled eggs and an extra laundry day... " - Jeffry J. Brickley

Re: Are you good with Maths API

Stefan Troschuetz27-Jun-05 4:33

Stefan Troschuetz

27-Jun-05 4:33

Math.Ceiling(a / 10);

www.troschuetz.de

Re: Are you good with Maths API

Daniel Monzert27-Jun-05 4:44

Daniel Monzert

27-Jun-05 4:44

gee *cough* I'll join, assuming x is an int..

int n = (x / 10) + (x % 10 > 0 ? 1 : 0);

*lame around* \o/

Re: Are you good with Maths API

Daniel Monzert27-Jun-05 5:09

Daniel Monzert

27-Jun-05 5:09

While walking at the abyss of insanity, I found out, you can use something completely senseless, far away from anything that could be called useful. Evalute strings.

int x = 27;<br />
int n = 0;<br />
string seperator = System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator;<br />
<br />
double d = ((double)x / 10.0d);<br />
string s = d.ToString("F1");<br />
<br />
if (!s.Substring(s.IndexOf(seperator) + 1, 1).Equals("0"))<br />
{<br />
d += 1.0d;<br />
s = d.ToString("F1");<br />
}<br />
<br />
n = int.Parse(s.Substring(0, s.IndexOf(seperator)));

Re: Are you good with Maths API

mav.northwind27-Jun-05 5:44

mav.northwind

27-Jun-05 5:44

Daniel, you frighten me! Wink | ;)

mav

Re: Are you good with Maths API

StylezHouse27-Jun-05 9:49

StylezHouse

27-Jun-05 9:49

You are outta control! Poke tongue | ;-P

Re: Are you good with Maths API

Daniel Monzert27-Jun-05 10:15

Daniel Monzert

27-Jun-05 10:15

Umm.. yes, I got it out of the abyss of insanity, I'm walking quite close to it but usually don't use anything from there Big Grin | :-D

Even if it works, it's awful, but it works Big Grin | :-D

I also like the ASM version from Niklas Ulvinge Smile | :)

Re: Are you good with Maths API

Niklas Ulvinge27-Jun-05 9:49

Niklas Ulvinge

27-Jun-05 9:49

Wouldn't this be machinecode optimised:

n >> 1;
n /= 5;
n++;

In asm it would be like:
;number in AL
SHL AL,1 ;2 clocks
MOV BL, 5 ;4 clocks
DIV BL ;0-90 clocks
INC AX ;2 clocks (saved one clock by using AX insted of AL...)

;
;I'm not familiar with how much the div instruction takes in time but
;since it is only 5 I think's it's not much.
;

The PROgrammer Niklas Ulvinge aka IDK

Re: Are you good with Maths API

hasanali0027-Jun-05 23:01

hasanali00

27-Jun-05 23:01

Thanks for many ideas. This is what worked for me:

Math.Ceiling(13.0D / 10.0D);

Only if the values inside Ceiling(...) are Double and not int

Odbc Dataadapter error

V.27-Jun-05 3:12

27-Jun-05 3:12

Hi,

I'm reading in a DBase V database with an ODBC dataAdapter. This went well with the first version of the database, but I got an update friday and this one crashes. The strange thing is, it goes to the catch block on the fill method and crashed on the Exception itself.

so :

try{<br />
//...<br />
adapter.Fill(dataset);<br />
//...<br />
}<br />
catch(Exception e1){<br />
  //here it crashes<br />
}

the error is a nullreference exception of e1??
Could it be the database is corrupt because it was zipped? I put the previous version back, but it still crashes and I didn't change any code in the meantime.

the execute statement is just a Select * from table.

I hope somebody can help me,
tnx!

No hurries, no worries.

Data counter

Locdx27-Jun-05 2:06

Locdx

27-Jun-05 2:06

i want to write a program that count data loading from internet, how can i do it? Smile | :)

Re: Data counter

Anonymous27-Jun-05 4:00

Anonymous

27-Jun-05 4:00

What do you mean by "count data"? This is no where near enough information to answer your question.

Re: Data counter

Locdx30-Jun-05 1:08

Locdx

30-Jun-05 1:08

I mean, i want to know how much data (in bits or bytes) that my computer has been loading from the internet each time i'm online.This program helps me to calculate how much money i have to pay for using Internet each month.Experts help me please !! i'm so poor

focused list view item?

george ivanov27-Jun-05 1:34

george ivanov

27-Jun-05 1:34

How to set list view item (detailed view) as selected and focused?

thanks

Re: focused list view item?

mav.northwind27-Jun-05 1:55

mav.northwind

27-Jun-05 1:55

ListViewItem it = listView1.Items[3]; // pick an existing item to select
it.Selected = true; // select item
listView1.Focus(); // focus the listview

mav

Does DNSqueries against Open Relay Databases differ in any way from regular DNSqueries?

Stoffe27-Jun-05 0:51

Stoffe

27-Jun-05 0:51

Hello!

I am trying to query an open relay database (ordb.org) using a DNSquery. I have constructed a DNSquery and it works against any regular DNSserver but when I use the query against ordb.orgs database I never recieve any answer. So does the regular DNSqueries differ from the ones i should send to the open relay database? From what I have learned it shouldn't.

The FAQ for using DNSqueries at ordb.org is located here http://www.ordb.org/faq/#usage_dns[^]

Any help is more than welcome!
Best regards
Kristofer

Exract Data from LParam

einish27-Jun-05 0:13

einish

27-Jun-05 0:13

Dear All
I have a class that implements IMessageFilter:PreFilterMessage(ref Message m)
If M.Msg = WM_KEYDOWN I want help to get data from m.LParam

the desprate developer

Re: Exract Data from LParam

Dave Kreskowiak27-Jun-05 9:31

Dave Kreskowiak

27-Jun-05 9:31

Ok, so you know the keydata is in LParam. What's the problem? Are you asking how to get the various values out of the 32-bit Integer that is LParam?

WM_KEYDOWN Notification[^] docs on MSDN.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

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