C# Discussion Boards - CodeProject

sort an ArrayList of arrays

28-Sep-06 0:55

You want a class library, which is consumed by an app, to access variables in the app ? The best you can do is define delegates which can call back into the main app if they want to change the variable, and keep a local variable which your windows app can set.

Actually, if it's a class, passing it through from the windows app should maintain a reference, which means changes will be reflected in the windows app.

It depends, what exactly are you trying to do ?

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

ESTAN28-Sep-06 0:19

ESTAN

28-Sep-06 0:19

Hello,

I am using frequently ArrayList's that hold an array of strings. I never had to sort them till now. Does someone point me in a direction to sort them in an effective way?

An example of what I am using.

ArrayList alTemp = new ArrayList();
alTemp.Add(new string[] {string1, string2})

I like to sort them on the first element of the string[].

Thanks!

ESTAN

Kevin McFarlane28-Sep-06 0:38

Kevin McFarlane

28-Sep-06 0:38

Have a look at the Array.Sort method, e.g., see the example here:

http://msdn2.microsoft.com/en-us/library/6tf1f0bc.aspx[^]

Kevin

albCode28-Sep-06 0:40

albCode

28-Sep-06 0:40

ArrayList alTemp = new ArrayList();<br />
alTemp.Add(new string[] {string1, string2})<br />
Array.Sort(alTemp);

ESTAN28-Sep-06 1:10

ESTAN

28-Sep-06 1:10

I checked that before, and it will come up with the following errors:

Error 1 The best overloaded method match for 'System.Array.Sort(System.Array)' has some invalid arguments

Error 2 Argument '1': cannot convert from 'System.Collections.ArrayList' to 'System.Array'

albCode28-Sep-06 1:53

albCode

28-Sep-06 1:53

check this[^]

DataGridView with validation events, how to delete row with errors ?

ESTAN28-Sep-06 2:48

ESTAN

28-Sep-06 2:48

Thanks,

I'm going to look at this approach.

ESTAN

bouha28-Sep-06 0:11

bouha

28-Sep-06 0:11

hi all !
it's my first post here so let me welcome myself Smile | :)

ok let me explain my problem : i hawe a windows form in which i have a bound DGV (datagridview) and a bindingnavigator associated to sql server database.
in that DGV i'm using some handler events CellValidating, RowValidating... and DGV_DataError so the problem i'm facing is whenever there's a mistaken row in the datagridview i can't remove it with the bindingnavigator Delete button. indeed when i click on the delete button, the row in question, losts the focus and proceed on the validation process and it results in the final to the DataError event, in which i assign e.Cancel = True and that's logic because the entry in the row can't be reflected to the dataset in this case. so the process terminates with the dataError event without processing in removing the row, even when i handle the clik event of the bindingnavigator's Delete button nothing happens it doesn't process.
can anyone help me please Frown | :(

thks

C# is the future

Mouse wheel scroll events ?

Christian Graus27-Sep-06 23:59

27-Sep-06 23:59

My mouse ( and probably yours ) scrolls when you move the wheel left and right. Does anyone know how to capture this event on a window that doesn't have a scrollbar ?

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Nader Elshehabi28-Sep-06 2:52

28-Sep-06 2:52

Hello

For what I know WM_MOUSEWHEEL is sent to any window, whether having a scrollbar or not. Use Spy++ to monitor the window you want to catch the event in, then see if the message is sent to it or not. If so, you can easily filter it out.

Regards

Christian Graus28-Sep-06 10:27

28-Sep-06 10:27

Thanks, but that's not what I want. I am catching the wheel message. I want the message when the wheel is clicked left or right.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Nader Elshehabi28-Sep-06 10:35

28-Sep-06 10:35

Christian Graus wrote:
when the wheel is clicked left or right.

Whel is clicked?!! You mean rolled? and my wheel rolls up/down not left right!! For all I know you can check the lParam for that. HiWord contains WHEEL_DELTA which is the destination of rotaion. +ve for up, and -ve for down. The LoWord contains if other buttons are pressed. Was that what you want? I guess you already know that!!

Explain what you mean by "Clicked left or right"?

Regards

Christian Graus28-Sep-06 10:46

28-Sep-06 10:46

I appreciate that people sometimes ask dumb questions here, but when I ask something, I mean what I say. My mouse wheel rolls, the wheel can be pressed ( middle button ) and it also can tilt to the left or right, which seems to send WM_HSCROLL in windows with a scrollbar. I want to use that in my program.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Nader Elshehabi28-Sep-06 10:55

28-Sep-06 10:55

Christian Graus wrote:
I appreciate that people sometimes ask dumb questions here

Somtimes?!! Roll eyes | :rolleyes:

Man you spent a lot of time in the C++ forum. Don't take offence, I don't expect anything dumb from you.
About your wheel tilting, it's kind of special. I didn't see it before. Yet, since you are asking in the C# forum, that means that your are using .Net controls, which should have built-in abilities to handle such events. Anyway, all I can think of -if you want special handling of the event- is to use Spy++ to get what message is sent, and filter it out. Or maybe use inline assembly in a C++ dll to monitor PS2/use mouse port!;P

Regards

Christian Graus28-Sep-06 10:58

28-Sep-06 10:58

Yeah, I did Spy++, that's how I know WM_HSCROLL is occuring, nothing else that I can see.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Nader Elshehabi28-Sep-06 11:01

28-Sep-06 11:01

So, is there a problem in using it?

Regards

Christian Graus28-Sep-06 12:18

Re: Mouse wheel scroll events ? [modified]

28-Sep-06 12:18

Yes - it does not fire a click event, and I don't want to use it for scrolling.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Nader Elshehabi28-Sep-06 12:23

mater page and localization problem

28-Sep-06 12:23

Sorry! Out of ideas. For all I care: "If it fires when you click that thing, use it!".

Good luck! Big Grin | :-D

-- modified at 18:28 Thursday 28th September, 2006

Wait a minute!! I think I got you. Yo want to use it in a custom control of some sort, like a game?? Maybe want to make a fourth/fifth mouse click event? So what? Use the WM_HSCROLL message for what you need. Doesn't necessarily implies that you must scroll!!

Otherwise, like I said when I was joking, you got to listen to the port of the mouse somehow and see what bits stream is sent in the clicking.

Regards

Tamimi - Code27-Sep-06 23:54

Tamimi - Code

27-Sep-06 23:54

Hi
Could anyone please tell me how to deal with a for the content pages??
I had a page named test.aspx, and it has two local resourses files (.resx) , and it work fine, but when I decide to insert a master page, the localization process didn't work any more, why ??
Note : iam don't assign the master page for the test.aspx at runtime
what i have to do ??

thank you all

Tamimi - Code

Cross-instance method invoking

sjembek27-Sep-06 23:50

sjembek

27-Sep-06 23:50

Hi,

I'm using the code from this article to detect if another instance of my program is running and raise the other instance if it is, closing down the seccond instance of my program.

However, I would like to parse the command line parameters given to the seccond instance towards the first instance of my program, prefferably by invoking some kind of method on it. Is there any way of doing this?

Re: Cross-instance method invoking

Nader Elshehabi28-Sep-06 2:36