Working out if a process has focus or not - C# Discussion Boards

mathon15-Sep-04 3:50

15-Sep-04 3:50

I know the whole web service concept i only need to know how to set up and run a Mobile Web Appication on my PocketPc to consume a Web Service on a Server??? - because on the PocketPc does not exist an Web-Server and only call the MobileWebForm.aspx of the MobileWebApplication in the PocketExplorer does not work...??

regards

mat

An extra controls for Smart Device Framework in Whidbey

shayro14-Sep-04 5:22

shayro

14-Sep-04 5:22

Hi,
I'm developing an application for mobile device in
Smart Device framework and i would like to know if there are extra controls for this framework in whidbey.
Thanks,

Shay.

Re: An extra controls for Smart Device Framework in Whidbey

sreejith ss nair14-Sep-04 17:54

sreejith ss nair

14-Sep-04 17:54

hi,

I am not sure about extra controls but i can assure that our all avilable controls are seriously updated with new customiztion.

eg. Insted of datagrid here we have DataGridView.

See i wrote an article on Datagrid customiztion there i mentioned one url. Which connect you to the world of Whidbey. Try that Wink | ;)

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S r e e j i t h N a i r
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ADO.Net locking

pkandoth14-Sep-04 5:08

pkandoth

14-Sep-04 5:08

Hi
Is there any mechanism to use locking facility in ADO.net for a table ? Pls suggest any solution for locking a record/table.

Warm Regards
Pradeep

Re: ADO.Net locking

sreejith ss nair14-Sep-04 17:50

sreejith ss nair

14-Sep-04 17:50

hi,

Try to post your queary once.;)

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S r e e j i t h N a i r
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ADO.Net locking

pkandoth14-Sep-04 5:08

pkandoth

14-Sep-04 5:08

Hi
Is there any mechanism to use locking facility in ADO.net for a table ? Pls suggest any solution to do locking a record/table.

Warm Regards
Pradeep

Re: ADO.Net locking

sreejith ss nair14-Sep-04 17:50

sreejith ss nair

14-Sep-04 17:50

hi,

Ado is connected in nature.That's why we can apply locking machanisam there in Ado.
This is not the case with Ado.net, which means that ado.net uses what is referred as optimistic locking. i think you know about two kind of locking say Optimistic and Pessimistic locking.

You can't directly achive pessimistic locking here in ado.net like ado. You can achive this through applying transactions in your application. You can do one thing please look at how you can use the IsolationLevel enum with transactions to achive some kind of locking at the data source. Smile | :)

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Working out if a process has focus or not

CoffeeZombie14-Sep-04 4:30

CoffeeZombie

14-Sep-04 4:30

I'm trying to write an application to measure how long I spend using certain applications during the day. Idealy I'd like to get a message/event sent to my program when another selected program gets user focus as well as when it loses it.

I've figure out how to get a list of all running process and get their running information but is it possible to register a callback function to get notified of when another process recives or loses user focus so I can start stop a simple timer?

Cheers!

Re: Working out if a process has focus or not

mav.northwind14-Sep-04 6:00

mav.northwind

14-Sep-04 6:00

A global hook (for example a CBT hook) could give you this info.
There's an article on this topic:Global System Hooks in .NET[^]

Regards,
mav

Converting AVI to BMP

ee9903514-Sep-04 3:41

ee99035

14-Sep-04 3:41

Hi there!

I need some help converting files from an AVI movie to BMP.
IS there any component that helps to doing that?!
If not, how can I made one? What do I need?

Thanks a lot, Sérgio

Re: Converting AVI to BMP

sreejith ss nair14-Sep-04 3:58

sreejith ss nair

14-Sep-04 3:58

hi,

We have lot of articles here in codeproject which will deals your requirement. Search for some articles.

Eg . http://www.thecodeproject.com/csharp/steganodotnet4.asp

check whether this will surve your purpose or not ?;)

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S r e e j i t h N a i r
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Re: Converting AVI to BMP

ee9903514-Sep-04 7:36

ee99035

14-Sep-04 7:36

thanks for your help, SreejithNair

Wink | ;)

Re: Converting AVI to BMP

yoaz14-Sep-04 15:28

yoaz

14-Sep-04 15:28

You might also want to look up this excelent library.
It includes much more than getting bmp's from avi's, but discusses video input and its capturing.

there are no facts, only interpretations

Sorting numbers in a ListView

goldoche14-Sep-04 3:06

goldoche

14-Sep-04 3:06

Hi, I'm using a ListView to display integers and I'd like to sort them, but it processes them as strings... so it gives something that looks like

1
10
11
12
2
3
4
5
...

is there a way to sort them as numbers? I've thought of adding leading zeros to each number but that's not really pretty...

Thanks!

Re: Sorting numbers in a ListView

sreejith ss nair14-Sep-04 3:35

sreejith ss nair

14-Sep-04 3:35

hi,

ListView have a method called Sort() which will only sort based on alephabetic manner (like string compare). So here what you can do is you can Impliment IComparer interface in your ListView class. In IComparer contain an abstract method called Compare(object a,object b).

And remaing is is upto your logic to compare and getit done. Try your self and if it is not possible by your self then let me know.

Wink | ;)

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S r e e j i t h N a i r
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Re: Sorting numbers in a ListView

mav.northwind14-Sep-04 3:42

mav.northwind

14-Sep-04 3:42

Hi!
By default, the ListView is sorting its items lexicographically, so numbers will not be sorted correctly.
To achive the correct sorting you'll have to write a class implementing IComparer and assign it to the ListView's ListViewItemSorter property.

You'll get two ListViewItem's to compare, so you can decide according to which subitem you want to sort, if sorting is to be performed ascending or descending and what to do with numbers or dates.

For example, the core of such a comparer could be something like this:

public int Compare(object x, object y)
{
  ListViewItem i1 = x as ListViewItem;
  ListViewItem i2 = y as ListViewItem;
 
  try
  {
    return (int.Parse(i1.SubItems[0].Text) - int.Parse(i2.SubItems[0].Text));
  }
  catch
  {
    return 0; // Not comparable
  }
}

By modifying the SubItem index you can easily sort by different columns or if you use DateTime.Parse instead of int.Parse you can sort your ListView by dates.

Regards,
mav

axWebBrowser and multiple language support

adohring14-Sep-04 2:57

adohring

14-Sep-04 2:57

I currently use a axWebBrowser control in my C# application to display html. When non-english characters are in the html strings the control displays garbage. Is there a way to configure the control or format the html string so that the characters are displayed correctly?

Any help is much appreciated.

regards,
AD

Encryption

wybstar14-Sep-04 2:42

wybstar

14-Sep-04 2:42

Hi,I am using C# to encrypt file.
Here is the code:
public byte[] Encrypt(byte[] sourceObject,string key)
{
MemoryStream msOut = new MemoryStream();
MemoryStream msIn = new MemoryStream();
CryptoStream encryCs;
long lLen;
int nRead, nReadTotal;
byte[] buf = new byte[3];

encryptMethod.Key = GetValidKey(key);
encryptMethod.IV = GetValidIV(key,encryptMethod.IV.Length);

encryCs = new CryptoStream(msOut,encryptMethod.CreateEncryptor(),CryptoStreamMode.Write);

msIn.Write(sourceObject,0,sourceObject.Length);
msIn.Position = 0;

lLen = msIn.Length;
nReadTotal = 0;
while( nReadTotal < lLen )
{
nRead = msIn.Read(buf,0,buf.Length);
encryCs.Write(buf,0,nRead);
nReadTotal += nRead;
}
encryCs.FlushFinalBlock();
encryCs.Close();
return msOut.ToArray();
}

When the size of file is less than 15MB ,the program runs ok.But when the size of file is larger than 15MB,the program will come out the exception of outofMemoryException.

Thank you,
wybstar

Re: Encryption

Steven Campbell14-Sep-04 3:06

Steven Campbell

14-Sep-04 3:06

It would be more efficient to eliminate msIn and the loops, and to use a BinaryWriter to write the encrypted data. Something like

BinaryWriter w = new BinaryWriter(encryCs);
w.Write(sourceObject);
return msOut.ToArray();

(flushes and closes removed for clarity).

my blog

Re: Encryption

wybstar15-Sep-04 20:42

wybstar

15-Sep-04 20:42

I have modified the code. However ,the program still met the Exception of OutOfException. Confused | :confused:

I want to know whether the .net not support the encryption of big file?
thank you!

CD In out eject

Member 129384013-Sep-04 21:01

Member 1293840

13-Sep-04 21:01

I am using C#.net to make a program to open and close the cd tray.
I tried using System.Runtime.InteropServices namespace. and MCI . ok

The code is truning hell to me and the sdk got me more confusing. I need somebody to tell me exactly what to do .

Re: CD In out eject

sreejith ss nair13-Sep-04 21:42

sreejith ss nair

13-Sep-04 21:42

hi,

please go through this link.

http://www.artima.com/forums/flat.jsp?forum=76&thread=3997

this may help you out.;)

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S r e e j i t h N a i r
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Re: CD In out eject

Stefan Troschuetz14-Sep-04 3:54

Stefan Troschuetz

14-Sep-04 3:54

This worked for me:

// Declaration
[DLLImport("winmm.dll")]
extern static int mciSendString(string lpszCommand, int lpszReturnString, int cchReturn, int hwndCallback);

// Usage
mciSendString("Set cdaudio door open wait", 0, 0, 0);
mciSendString("Set cdaudio door closed wait", 0, 0, 0);

www.troschuetz.de

video with directx

Member 135667113-Sep-04 20:19

Member 1356671

13-Sep-04 20:19

Im making a simple media player using managed directx, AudioVideoPlayback. The problem im having is that the video is not playing in the form, it plays in the top left corner of the screen.

here is the code:
Video vid = Video.FromFile(file);
vid.Owner = this;
vid.Play();

im using directx 9.0c summer 2004 update
.net framework 1.1
visual studio 2002, c#
windows XP, sp2

ive tried others code with the same result (MDX sample code). If anybody knows whats going on, Please Help me!

URL to the Web Service gives parser error

Jeffrey Scott Flesher13-Sep-04 19:50

Jeffrey Scott Flesher

13-Sep-04 19:50

I got interested in Web Services and found an article at http://www.codeproject.com/cs/webservices/cpwebserviceconsumer.asp; it references http://www.codeproject.com/webservices/latest.asmx, but I get a parser error; is this web service down or has the URL changed? Thanks

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