C# Discussion Boards - CodeProject

deldeep29-Jun-05 2:53

29-Jun-05 2:53

Creating a Excel sheet from C# is easy.

One way to do this is:

Get your database from your datasource.
Turn your data into an XML document
And then with a XSLT file
Display this document as an Excel file.

with XSLT you can include excel functions so calculation can be aready done when it loads.

If you generate an excel spread sheet and then save it as a xml sheet you'll see what your XSLT file should sort of look like

keep smilling.....b'coz smile is the shortest distance between people....

Closing applications gracefully

_Hacker28-Jun-05 22:03

_Hacker

28-Jun-05 22:03

Hi all

I have a windows application that connects to a webservice. While the app is busy connecting to the webservice the network might be down, so the app kinda hangs while trying to connect to the webservice and I would like to be able to close the app but I'm unable cause the window doesn't respond to the mouse clicks.

If there's any way to close the app gracefully, it would be nice.

Thanks

Re: Closing applications gracefully

S. Senthil Kumar28-Jun-05 22:28

S. Senthil Kumar

28-Jun-05 22:28

You'd need to use threads or asynchronous web service calls then. I'd prefer the latter. The code will look like

public void CallWebService_ButtonClick(...)
{
   new MethodInvoker(CallWebService).BeginInvoke(callback, ...);
}

private void CallWebService()
{
   // Do the actual operation here
}

Just make sure that the UI updates you do from within CallWebService or from within the callback use Control.Invoke or Control.BeginInvoke[^].

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: Closing applications gracefully

Dylan van Heerden28-Jun-05 23:27

Dylan van Heerden

28-Jun-05 23:27

Thanks

Crying for help to develop componet

soft_Brains28-Jun-05 21:26

soft_Brains

28-Jun-05 21:26

Hi Iam new to .net pls help
Want to develop a component to retrieve first 10 records from a oracle table

Any one help

Lion Heart
Software Engineer
Bangalore

Re: Crying for help to develop componet

J4amieC28-Jun-05 22:18

J4amieC

28-Jun-05 22:18

Have you actually tried anything yet? Were you just expecting someone to hand you the code and say "here you go"?

Getting the first 10 records is as simple as:

SELECT TOP 10 * FROM myTable

Beyond this you will find a download at the MS site for the ADO.NET libraries to work with Oracle. The records may be retrieved using a DataReader, or a DataAdapter and DataSet.

When/if you have some specific difficulties come and post the question.

Re: Crying for help to develop componet

soft_Brains28-Jun-05 22:34

soft_Brains

28-Jun-05 22:34

i KNOW THIS QUERY
I WANT TO KNOW THE STEPS TO DEVELOP A COMPONENT USING THIS QUERY

ANY WAY THANKS FOR THIS

Lion Heart
Software Engineer
Bangalore

Re: Crying for help to develop componet

mav.northwind28-Jun-05 22:48

mav.northwind

28-Jun-05 22:48

Please stop shouting.

There are plenty of articles (beginners' level, too) on MSDN and CP.
Please try searching and reading them first.

Regards,
mav

Re: Crying for help to develop componet

Michael P Butler28-Jun-05 23:35

Michael P Butler

28-Jun-05 23:35

You either need to use the .NET OleDB data provider or use the Oracle .NET data-provider[^]

MSDN has plenty of good examples here[^]

Michael

CP Blog [^] Development Blog [^]

messagebox

g00fyman28-Jun-05 20:41

g00fyman

28-Jun-05 20:41

just wondering how you create a messagebox like the ones when installing VS.NET 2005
where you have your message then a horizontal line then some icons to left under line and button on right under line

the icons in het .NET setup where (i think) copy to clipboard, help and print.

is it a matter of creating your own model dialog or is this a new thing in 2005 that i cant find? (yet)

regards,
g00fy

namespace->Microsoft.pointofservice

arun_appu28-Jun-05 19:41

arun_appu

28-Jun-05 19:41

where can i have the namespace Microsoft.PointOfService
the link for this namespace explanation from msdn is

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ccl/html/T_Microsoft_PointOfSer

vice_PosKeyboard.asp

plz help me urgently
regards
Arun Appukuttan

Re: namespace->Microsoft.pointofservice

deldeep29-Jun-05 2:59

deldeep

29-Jun-05 2:59

Hope u will get here...

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ccl/html/N_Microsoft_PointOfService.asp

keep smilling.....b'coz smile is the shortest distance between people....

namespace->Microsoft.pointofservice

Anonymous28-Jun-05 19:39

Anonymous

28-Jun-05 19:39

Re: namespace->Microsoft.pointofservice

Christian Graus28-Jun-05 19:58

Christian Graus

28-Jun-05 19:58

Obviously in an embedded or mobile OS from Microsoft, if you read the breadcrumbs.

Christian Graus - Microsoft MVP - C++

Re: namespace->Microsoft.pointofservice

leppie28-Jun-05 20:45

leppie

28-Jun-05 20:45

No, its not. D'Oh! | :doh:

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

Re: namespace->Microsoft.pointofservice

Dave Kreskowiak29-Jun-05 1:11

Dave Kreskowiak

29-Jun-05 1:11

Really? This is what I see at the top of the page:

MSDN Home > MSDN Library > Mobile and Embedded Development > Embedded Operating System Development > Microsoft POS for .NET Overview > POS for .NET > Microsoft.PointOfService

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

Re: namespace->Microsoft.pointofservice

leppie28-Jun-05 20:49

leppie

28-Jun-05 20:49

http://download.microsoft.com/download/3/4/8/348bae1f-a4a2-49ab-82c7-cdc04bfd32c1/SDK.exe[^]

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

problem with creating a parent form.

Green Fuze28-Jun-05 19:39

Green Fuze

28-Jun-05 19:39

Hello

I created an application that the Main window is calling another window(let call it Second).

from the Second form I want to call a function from the Main form.
so I tried to use Second's constructor to pass the Main form so I can call a public function from the Main form, but c# returns an error.
thats the code:

in Main form:

//the public method
public void Saving()
{
...
}
..
..
//somewhere else in the code, calling the Second window
Second dlgSec = new Second(this);

in Second form:
...
private Form dlgParent;
...

public Second(Form formParent)
{
this.dlgParent = formParent;
InitializeComponent();
}
...

//somewhere in the code, trying to call the function
dlgParent.Saving();

c# cannot find that method.
it does make sense because, because the compiler does not know that I'm going to pass the Main form from the beginning, but I already have done something familier in another application I wrote and it did work, I guess that now I'm missing something and I don't know what.

Can anyone help me with that???
THANKS!!! Smile | :)

Re: problem with creating a parent form.

Christian Graus28-Jun-05 20:00

Christian Graus

28-Jun-05 20:00

Green Fuze wrote:
public Second(Form formParent)
{
this.dlgParent = formParent;
InitializeComponent();
}

You're downcasting the object to it's base class, you need tochange Form formParent to NameOfMyDerivedFormClass formParent.

Although personally I think this is ugly, and your classes get too tighly coupled. I'd use a delegate to perform this callback.

Christian Graus - Microsoft MVP - C++

Re: problem with creating a parent form.

Green Fuze28-Jun-05 20:44

Green Fuze

28-Jun-05 20:44

okay, got it Smile | :)

Thx alot!

and sorry its ugly, I'm teaching C# myself, so I'm not so comfortable with everything, like delegates.

to be honest, I don't really understand what are delegates, and what they're good for...

Re: problem with creating a parent form.

Christian Graus28-Jun-05 20:47

Christian Graus

28-Jun-05 20:47

A delegate is a function pointer. An example would be any event in your form, such as Click or Load. You can create your own and use them to pass messages between classes.

Christian Graus - Microsoft MVP - C++

Re: problem with creating a parent form.

Green Fuze28-Jun-05 21:50

Green Fuze

28-Jun-05 21:50

oh, I see! thats much better than what I've done.

okay, I'll sit on that. thanks! Smile | :)

Re: problem with creating a parent form.

J4amieC28-Jun-05 22:26

J4amieC

28-Jun-05 22:26

Delegates are hard to explain in a short message, but they suit what you want quite well.

lets start by defining a delegate

<br />
public delegate void SavingDelegate()

This basically says that im going to pass around a reference to a method that takes no parameters and returns void. This signiture should match your Saving method.

Now pass this to the second form instead of the reference to the parent

private SavingDelegate savingDelegate;
public Second(SavingDelegate mySavingDelegate)
{
  this.savingDelegate = mySaqvingDelegate;
}

So when second closes you used to try something like this:

this.myParentForm.Saving()

now you could simply do this:

this.savingDelegate()
(ie, you can "call" the delegate as if its a method.)

So to set this up, from the main form your code may look like

SavingDelegate sd = new SavingDelegate(this.Saving); // notice no parenthisis on method name<br />
Form secondForm = new MyFormName(sd);<br />
secondForm.ShowDialog();

HTH

Re: problem with creating a parent form.

Green Fuze29-Jun-05 4:34

Green Fuze

29-Jun-05 4:34

Thanks ALOT!!!

regex help pls

g00fyman28-Jun-05 18:49

g00fyman

28-Jun-05 18:49

hey am tryig to recognise a href and get the value so i can build a Uri object with it,

all is good so far except when i encounter a href with javascript in it

can anyone refine my regex pls

<br />
Regex RegexObj = new Regex("<\\s*a\\s+[^>]*href\\s*=\\s*[\"']{1}.+[\"'].*>");<br />

kind regards,
g00fy

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