C# Discussion Boards - CodeProject

zecodela25-Jul-03 16:23

25-Jul-03 16:23

hi,
would anyone give me some idea how i can check if an application running by C# like using FindWindow in VC++?
thanks,
jim

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 16:41

J. Dunlap

25-Jul-03 16:41

Why not use FindWindow in C#? Wink | ;)

[DllImport("user32.dll")]
private static extern IntPtr FindWindow(
                     string lpClassName,
                     string lpWindowName);

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: FindWindow analogue in C#

zecodela25-Jul-03 16:50

zecodela

25-Jul-03 16:50

does it a good practice using unmanaged module?
i seldom use p-invoke. any idea?
thanks,
jim

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 17:07

J. Dunlap

25-Jul-03 17:07

If you're wanting easy cross-platform capabilites, wou might not want to use the Windows API. Otherwise, it's just fine.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: FindWindow analogue in C#

Eric Gunnerson (msft)25-Jul-03 17:26

Eric Gunnerson (msft)

25-Jul-03 17:26

Try the Win32Window class at
http://www.gotdotnet.com/team/csharp/code/default.aspx

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 17:31

J. Dunlap

25-Jul-03 17:31

That's http://www.gotdotnet.com/team/csharp/code/default.aspx [^].

BTW, nice classes. They're made by you, right?

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Re: FindWindow analogue in C#

zecodela25-Jul-03 17:32

zecodela

25-Jul-03 17:32

thanks...
seems the only way is using win32 api

Re: FindWindow analogue in C#

J. Dunlap25-Jul-03 17:38

J. Dunlap

25-Jul-03 17:38

Most of the .NET classes use the Windows API - they're just wrappers.

"Blessed are the peacemakers, for they shall be called sons of God." - Jesus

"You must be the change you wish to see in the world." - Mahatma Gandhi

Getting frames from mshtml

tstyaps25-Jul-03 14:15

tstyaps

25-Jul-03 14:15

Hi,

I am using shdocvw/mshtml to automate IE. I'm able to create an instance of IE, retrieve a document, and manipulate the document (i.e. fill in text fields, click buttons, etc).

The problem I'm having though, is working with pages that have frames. I am getting the top level page, and cannot seem to access any of the frames themselves. When I try calling the property .frames off my document, I get the error:

An unhandled exception of type 'System.InvalidCastException' occurred in UIAutomation.exe. Additional information: No such interface supported.

Does anyone know why this is? Maybe I'm assigning it improperly? When I enumerate through .all, I do see the frameset and frame elements. This problem happens on even simple pages such as:

http://www.htmlcodetutorial.com/frames/basicframeset.html

Thanks.

Milla Seconds in DateTime.Now

eggie525-Jul-03 13:41

eggie5

25-Jul-03 13:41

Can DateTime.Now display millaseconds?

I have...

DateTime.Now.ToString("hh:mm:ss");

what abrevation do I put in for millaseconds?

/\ |_ E X E GG

Re: Milla Seconds in DateTime.Now

dynamic25-Jul-03 13:48

dynamic

25-Jul-03 13:48

Vb.Net:

<font color="blue">Private</font> <font color="blue">Sub</font> Button1_Click(<font color="blue">ByVal</font> sender <font color="blue">As</font> System.Object, <font color="blue">ByVal</font> e <font color="blue">As</font> System.EventArgs) <font color="blue">Handles</font> Button1.Click <br>         MessageBox.Show(<font color="#0000FF">DateAndTime</font>.Now.Ticks) <br>     <font color="blue">End</font> <font color="blue">Sub</font> <br>

Vb:

<font color="blue">Public Function</font> TwinsOnWay(<font color="blue">ByVal</font> twins <font color="blue">As String</font>) <font color="blue">As String <br>     Select Case</font> twins<br>         <font color="blue">Case</font> "Gender" <br>             <font color="blue">Return</font> "Two Girls" <br>     <font color="blue">End Select <br> End Function</font> <br>

Re: Milla Seconds in DateTime.Now

dynamic25-Jul-03 13:52

dynamic

25-Jul-03 13:52

might help if it's C# code lol :
C#:

<font color="blue">private</font> <font color="blue">void</font> button4_Click(<font color="blue">object</font> sender, System.EventArgs e) <br> { <br> 	MessageBox.Show(<font color="#0000FF">DateTime</font>.Now.Ticks.ToString()); <br> } <br>

there ya go Smile | :)

Vb:

<font color="blue">Public Function</font> TwinsOnWay(<font color="blue">ByVal</font> twins <font color="blue">As String</font>) <font color="blue">As String <br>     Select Case</font> twins<br>         <font color="blue">Case</font> "Gender" <br>             <font color="blue">Return</font> "Two Girls" <br>     <font color="blue">End Select <br> End Function</font> <br>

Re: Milla Seconds in DateTime.Now

eggie525-Jul-03 14:04

eggie5

25-Jul-03 14:04

ok...
is that in milla seconds? or nano seconds???

and I need it to look like this minutes:seconds:millaseconds...

so, DateTime.Now.ToString("mm:ss:??");

how would I do that?

/\ |_ E X E GG

Re: Milla Seconds in DateTime.Now

Rocky Moore25-Jul-03 22:26

Rocky Moore

25-Jul-03 22:26

You might look at:

DateTime.Now.ToString("mm:ss:fffffff");

Rocky Moore <><

Re: Milla Seconds in DateTime.Now

eggie525-Jul-03 22:40

eggie5

25-Jul-03 22:40

that's exactly what I wanted.
thanks.

/\ |_ E X E GG

Re: Milla Seconds in DateTime.Now

leppie25-Jul-03 23:53

leppie

25-Jul-03 23:53

dynamic wrote:
DateTime.Now.Ticks

Ticks a machine dependent timing resolution. Commonly = 10ms.

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

Re: Milla Seconds in DateTime.Now

StealthyMark26-Jul-03 14:14

StealthyMark

26-Jul-03 14:14

In the DateTime structure, one Tick always equals 100 ns (100 nanoseconds = 0.1 mikroseconds = 0.0001 milliseconds). But as you said, the actual resolution is somewhat lower.

getting the name of a passed parameter

Rbledwards25-Jul-03 11:42

Rbledwards

25-Jul-03 11:42

I have a reporting interface that generates 100 or so reports. Each report uses a varying combination of 11 total parameters (from 0 - 4 at most). So I could have:

Report report = new Report(StartDate, EndDate, NameID, LocID) //or just
Report(StartDate, NameID) //or
Report()

My problem is: how do I get my constructor to accept the parameters and know which ones were passed without overloading it a gillion times. Is there a way to a generic type parameter and get the actual name of the parameter passed? If I have the name of the parameter I can cast to the right type. I could even create a hashtable with all my parameter names, types and build my AddParameter method off of the parameter name.

Actually If I can get the name of the parameter, and I know the most that will be passed is four, five constructors and be good to go...I think.

Is this possible?

Robert

Re: getting the name of a passed parameter

albean25-Jul-03 11:48

albean

25-Jul-03 11:48

Why not just pass it a collection or array that contains your "parameters".

Re: getting the name of a passed parameter

Rbledwards25-Jul-03 12:25

Rbledwards

25-Jul-03 12:25

Excellent idea. Obviously never thought of it.

Re: getting the name of a passed parameter

Daniel Turini25-Jul-03 11:49

Daniel Turini

25-Jul-03 11:49

Besides albean suggestion, which makes it very flexible for extending parameters, you can always set properties of a class and pass this class as a parameter to your Report constructor.

Acting as a substitute for God, he becomes a dispenser of justice. - Alexandre Dumas

Re: getting the name of a passed parameter

Jim Stewart25-Jul-03 11:54

Jim Stewart

25-Jul-03 11:54

Martin Fowler had a solution for this type of problem in Refactoring with Introduce Parameter Object (p. 295). The concept is to "Create a new class to represent the group of parameters you are replacing."

ReportParams rp = new ReportParams (StartDate, EndDate, NameID, LocID);
Report report = new Report (rp);

Your new parameter object could have all the permutations of parameters and remove those details from the Report class.

α.γεεκ

Fortune passes everywhere.
Duke Leto Atreides

Re: getting the name of a passed parameter

Rbledwards25-Jul-03 12:26

Rbledwards

25-Jul-03 12:26

Off to Amazon.com I guess. Thanks for the tip.

Updating Listbox Items

monrobot1325-Jul-03 10:37

monrobot13

25-Jul-03 10:37

Hi Yallz,

I have a list box that you can edit the items in (click a button, and it pops up a form so you enter the info you want), the problem I'm encoutering is that once the user presses OK on the edit form the listbox isn't update with the new informatin. Is there anyway to update a listbox item without removing it and then adding it back?

Thanks!

- monrobot13

Re: Updating Listbox Items

albean25-Jul-03 11:37

albean

25-Jul-03 11:37

Are you doing something like this in your click event:

MyForm f = new MyForm();
f.Show();

If you are then your problem is you are getting a NEW form each time with an empty list.

Try hiding the listbox form when you are done with it. In the button click event unhide it.

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