C# Discussion Boards - CodeProject

9-Dec-03 2:54

First, create a good design and then go either way. When it comes to UI logic, though (like handling click events and what-not), it's far easier to design the UI first. I personally like creating all my "utility" classes first, though. But jumping into either the front- or back-end without a good design is like diving into a pool without first checking the depth.

Also, when working with data-driven applications, it's better to develop at least the majority of your database elements (tables, views, stored procs, etc.) first. Creating business objects around these is also helpful, but not always necessary.

-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----

Re: Design Technique

hazzem elrefai9-Dec-03 22:47

9-Dec-03 22:47

i agree with u Heath Stewart
and i want to say that the analysing phase in so important and evry day in analysing save 5 days in implementaion time, and u can not start the first step in implementaion unless u finished the last step in analysing and design and u r already know what u r going to do till the end

Re: Design Technique

Ken Galer10-Dec-03 2:33

Ken Galer

10-Dec-03 2:33

I understand what both of are saying and agree. I think that I mis-stated the question.

Under the covers of the GUI, when designing whatever custom classes you require and their interfaces, do you normaly design the class:interfaces first and then the classes themselves after you are sure that you can use the classes the why you like?

I'm a C programmer trying to explicitly cast myself as a C# programmer so this is coming from a newbi.

Having just finished the chapter and FINALLY understanding the concept of interfaces ( i hope ) it seems to me that interfaces can act as sort of a prototype for the class.

Do you gyz, as experienced programmers in C#, find this to be useful or does it turn out to be not an issue?

Thanks

Ken Galer
Electrical Engineer
Preferred Utilities Corp.
Danbury, CT 06810

Word object

hazzem elrefai8-Dec-03 23:57

8-Dec-03 23:57

i have got code that use Microsoft spell checker, but when i tryed to compile it i have got erorr in this line:

////////////////
using Word;
//////////////

the erorr is :-

"The type or namespace name 'Word' could not be found (are you missing a using directive or an assembly reference?)"

so i wanna know how to make my application show word class

and thnx in advance

Colin Angus Mackay9-Dec-03 0:19

9-Dec-03 0:19

using Office = Microsoft.Office.Core;
using Word = Microsoft.Office.Interop.Word;

--Colin Mackay--

"In the confrontation between the stream and the rock, the stream always wins - not through strength but perseverance." (H. Jackson Brown)

Enumerators in .NET: See how to customise foreach loops with C#

hazzem elrefai9-Dec-03 0:35

9-Dec-03 0:35

i typed the full path but the code doesn't compile at all
this code is:
private void btn_create_Click(object sender, System.EventArgs e)
{
Microsoft.Office.Interop.Word.Application newApp = new Microsoft.Office.Interop.Word.Application();

l_status.Text+="object instantiated\n";

object Source="c:\\abc\\dat.doc";
object Target="c:\\abc\\Target.rtf";

object Unknown =Type.Missing;

// Source document open here
// Additional Parameters are not known so that are
// set as a missing type
newApp.Documents.Open(ref Source,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,ref Unknown);
l_status.Text+="file opened\n";

// Specifying the format in which you want the output file
object format = Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatRTF;

l_status.Text+="new format created";

//Changing the format of the document
newApp.ActiveDocument.SaveAs(ref Target,ref format,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown);

l_status.Text+="new file saved \n";

// for closing the application
newApp.Quit(ref Unknown,ref Unknown,ref Unknown);

l_status.Text+="object closed \n";
}

===============================================
the error message is :

An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in code_container.exe

Additional information: The server threw an exception.

Colin Angus Mackay9-Dec-03 0:56

9-Dec-03 0:56

hazzem elrefai wrote:
An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in code_container.exe

Indicates that the code has compiled. You have a runtime error.

What line did this happen on?

--Colin Mackay--

hazzem elrefai9-Dec-03 1:17

9-Dec-03 1:17

the error in the main finction line :
and i couldn't get any meaningful data from this erorr

static void Main()
{
Application.Run(new MainForm());
}

Colin Angus Mackay9-Dec-03 2:15

9-Dec-03 2:15

I suspect this is where the exception was CAUGHT. Not where it was generated/thrown.

static void Main() 
{
try
{
Application.Run(new MainForm());
}
catch(Exception e)
{
Debug.WriteLine(e.Message);
Debug.WriteLine(e.StackTrace);
}
}

Will write to the output the location that the error was generated. This will help with solving the problem.

--Colin Mackay--

hazzem elrefai9-Dec-03 2:35

9-Dec-03 2:35

i used try catch statements and the erorr is comming from this line:

newApp.Documents.Open(ref Source,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,
ref Unknown,ref Unknown,ref Unknown,ref Unknown);

plz keep with me and this will be apreciated
thnx another time

Heath Stewart9-Dec-03 2:51

9-Dec-03 2:51

Colin, note that putting a try-catch around Application.Run only works when an exception causes the application message pump to terminate. This is usually not the case. The try-catch should be as local to the problem as possible (like in the original poster's code to create the Word app and open the document). You can also handle the AppDomain.UnhandledException event.

Colin Angus Mackay9-Dec-03 3:08

9-Dec-03 3:08

Heath Stewart wrote:
Colin, note that putting a try-catch around Application.Run only works when an exception causes the application message pump to terminate

True, like happened here. I realise that the try...catch would be better placed else where but trying to help quickly I figured it was easiest to put round the Application.Run.

--Colin Mackay--

hazzem elrefai9-Dec-03 3:20

9-Dec-03 3:20

iam so confised now,coz i can not run my application yet
and i do not know what is the problem exactly.

Colin Angus Mackay9-Dec-03 3:29

9-Dec-03 3:29

Well, it looks like your code was copied from the documentation. So I don't see much difference between that and MSDN. Are you using a WordProject?

--Colin Mackay--

hazzem elrefai9-Dec-03 3:35

9-Dec-03 3:35

i do not know what is word project exactly
but if it is wizard in vs.net,then i do not use it and it doesn't there
iam using vs.net2003 profissional
thanx

Colin Angus Mackay9-Dec-03 3:45

9-Dec-03 3:45

I'm using VS2003 and Office 2003 (So it might be an office thing) Anyway - I've emailed you the skeleton of the WordProject - it might provide clues to help with your problem. (Its easy for me because it does all the hard work getting everything integrated - You may have to change the project properties because the startup command line may be different in your case)

--Colin Mackay--

hazzem elrefai9-Dec-03 4:29

9-Dec-03 4:29

thank u so so so much
and sorry coz i have to go know and c u after little hours

hazzem elrefai9-Dec-03 1:36

Properties inspector style control

9-Dec-03 1:36

the erorr message say:
the server threw an exception

and nothing more.

AJ1238-Dec-03 23:02

AJ123

8-Dec-03 23:02

Hi,

Does anyone know if the .NET framework has any support for easily creating property inspector style windows? Had a quick look through the available Windows Forms controls and components, but couldn't see anything of interest. Anyone any suggestions?

Cheers
Richard

Re: Properties inspector style control

Heath Stewart9-Dec-03 2:47

Play avi video in full screen

9-Dec-03 2:47

You mean like the PropertyGrid? This (or at least a similar control) is what VS.NET uses and it makes full use of the classes in System.ComponentModel so you can make properties with TypeConverters and editors, as well as control the categories, descriptions, visibility, and other attributes using the attributes in System.ComponentModel. If you don't see the PropertyGrid in your toolbox, right-click on the toolbox and select "Customize toolbox". You'll find the PropertyGrid in there (it's in the System.Windows.Forms namespace).

kuya0008-Dec-03 20:56

kuya000

8-Dec-03 20:56

Does anyone know how to make a exe that plays a video file in full screen?

Re: Play avi video in full screen

Heath Stewart9-Dec-03 2:45

How keep areference of string

9-Dec-03 2:45

You should take a look at Managed DirectX 9 (http://msdn.microsoft.com/directx[^]). The managed classes are written from the ground up and are much easier to use (still not a trivial thing to work with, though, so read the documentation!) and offer many features like that.

Otherwise, you'd have to create an interop assembly for something like the Windows Media Player, which should have a method to make it display full-screen (hint, download the small Windows Media Player SDK and see the documentation for player.fullScreen boolean property. This might also be in the MSDN Online Library).

Eric Lacroix8-Dec-03 17:53

Eric Lacroix

8-Dec-03 17:53

Hi CodeProject member,

I got the fallowing code:

...
protected delegate bool ValidatorHanlder(object obj, ref string PropertieName, ref string ErrorNumber, ref string ErrorMessage);

PropertiesList = new Hashtable();
PropertiesList(StringProperty, new ValidatorHanlder(ZipCodeValidator));

public string StringProperty
{
get
{
return mStringProperty;
}
set
{
mStringProperty = value;
}
}
...

It is possible to reference the string by storing is pointer and not is value when added to the hashtable ? and if ZipCodeValidator is declare as static do i need to do a new pointer allocation on it?

(define Email (lambda ()
elacroix@devmesh.com))
Im not a church numeral im a free variable

Re: How keep areference of string

Heath Stewart8-Dec-03 18:28