C# Discussion Boards - CodeProject

Re: Opening a PDF file using hyperlink or link button

21-Jun-06 1:40

Aspose.PDF[^] has a viewer I think.

The Welsh will always support two teams: The Welsh, and anyone playing England

fregolo5221-Jun-06 1:41

fregolo52

21-Jun-06 1:41

On event LinkClicked use this function : Process.Start("myfile.pdf")
The file is opened with default pdf reader.

how can i save a crystal report as pdf

adamoz21-Jun-06 0:52

adamoz

21-Jun-06 0:52

i have a document in crystal report and i want to save that report as pdf, in windows application.. could anybody help me...

Re: how can i save a crystal report as pdf

JoeSharp21-Jun-06 3:41

JoeSharp

21-Jun-06 3:41

hi
try this

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;

ReportDocument pdfReport = new ReportDocument();
pdfReport.Load(myReportFileName);
pdfReport.SetDataSource(myDataSet);
pdfReport.Refresh();
MemoryStream ms = (MemoryStream)pdfReport.ExportToStream(ExportFormatType.PortableDocFormat);

// Write the MemoryStream (i.e. ms) to file

regards
joe

Re: how can i save a crystal report as pdf

Josh Smith21-Jun-06 5:04

Josh Smith

21-Jun-06 5:04

Don't forget to call Dispose() on the ReportDocument object too.

Database connectivity in C# using ADO.net

Alamzeb khan21-Jun-06 0:50

Alamzeb khan

21-Jun-06 0:50

how i can make connection between windows form and sql server through code?

Re: Database connectivity in C# using ADO.net

albCode21-Jun-06 1:06

albCode

21-Jun-06 1:06

http://www.daniweb.com/techtalkforums/thread21636.html[^]

loading a page in webbrowser ?

cmpeng3421-Jun-06 0:46

cmpeng34

21-Jun-06 0:46

hi all,
i am trying to load a page in a webbrowser.
how can i be sure that the page i am trying to open is completely loaded ?
then again i want to refresh that page for couple of times. (but it must be loaded completely before each refresh)
how can i check this ?
help please.
thanks in advance,
bye.

Re: loading a page in webbrowser ?

Ed.Poore21-Jun-06 1:42

How to add librariesin C# ( 2005 framework)?

21-Jun-06 1:42

Monitor the ProgressChanged event, the DocumentCompleted event isn't that reliable I've found, sometimes kicks in too early. Once you've decided the whole page has loaded then you can refresh it and start monitoring again.

The Welsh will always support two teams: The Welsh, and anyone playing England

Andy Rama21-Jun-06 0:28

Andy Rama

21-Jun-06 0:28

Hi to all,
How/where to add libraries req. for C# project in Visual Studio 2005 framework.

Best Regards & Thanks,
Aniket Salunkhe

Re: How to add librariesin C# ( 2005 framework)?

gnjunge21-Jun-06 2:46

gnjunge

21-Jun-06 2:46

In the solution explorer you can right click on the name of the project and click "Add Reference". I believe that you can also go to the Project item in the menu and select "Add Reference"/

printing reporting services

toink toink21-Jun-06 0:19

toink toink

21-Jun-06 0:19

I am making a form that will will Generate a report. It will display the report from the reporting services.

From that form, I have a preview and print buttons. Preview will display the report.
and print will print the report. Printing of reports would be possible even if the report isn't displayed yet.

How will i print the report though it hasn't beens shown yet?
What could be my possible code for it?

Why is this good practice [modified]

S020035621-Jun-06 0:15

S0200356

21-Jun-06 0:15

Hi I've never really understood the use in this peice of code, ive been told its good practice/programming to use it and its been mentioned it had somthing to do with security but personaly i cannot see why.

<br />
private int x;<br />
public int X()<br />
{<br />
get {x}<br />
set {x = value;}<br />
}<br />

(the code might be slightly wrong doing this on the fly)
whats the use in it though surly unless your only using one of the get or the set you might as well just use a public variable that way u decrease on the code thats needed to be written, compiled and read.

any comments would be apreciated

-- modified at 6:16 Wednesday 21st June, 2006

Talal Sultan21-Jun-06 0:30

21-Jun-06 0:30

Yes it is definately good practice. There is a slight mistake in it, it should be

get
{
   return x;
}

And no () parentheses after X.

X is called the property of x and the reason it is good practice is because in the GET and SET section you can write code to perform any operation you want. For example, you might have a boolean variable (call it 'ready') in your class and you would only allow users to retrieve the value of x if 'ready' is true. So you could do the following:

get
{
   if (ready) return x;
   else return 0; // or any value
}

The same thing can be applied to the SET section, where you could for instance only allow writing of a value if 'ready' is true:

set
{
   if (ready) x = value;
   else x=0; // or any value
}

Now, if a variable only has a get property, it's said to be read-only. Obvsiously, since you cannot set its value to anything.

I hope this helps a bit.

Talal

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

S020035621-Jun-06 0:52

S0200356

21-Jun-06 0:52

i realised that you could enter other code into the get and set but i hadn't thought of using it in that way, which makes alot of scence.
but that was well explained thx
so as far as good practice gose its good to use it on a normal variable without any aditional code just so if somone comes along in the futre they dont have to adjust a ton of code?

Talal Sultan21-Jun-06 1:02

21-Jun-06 1:02

yes, it is a good idea to always have your class variables as protected or private and expose them to the user by mean of properties.

Another common practice is to have the propery name the same as the variable name but with a capitalized first letter. i.e. roleName and RoleName.

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

Divyang Mithaiwala21-Jun-06 1:14

Divyang Mithaiwala

21-Jun-06 1:14

It is just usefull when u want to trace a code where u can use value of 'x' and change value of 'x'. And it is more usefull for large project.

regards,
Divyang Mithaiwala
System Engineer & Software Developer

Running MSI file from inside a windows forms application

BoneSoft21-Jun-06 4:08

BoneSoft

21-Jun-06 4:08

There are already good answers to your question, but I'll give you the simple answer...

One of the corner stones of object oriented programming is encapsulation. Which means hiding implementation details from the user. When you expose a field you are allowing the user to set that field to anything they wish. When you encapsulate that field with a property, you allow the class the ability to validate data that the user tries to set to that property/field.

When designing a class, it's important to state in some fashion what the expected behaviour of the class is within a finite range of inputs. It's up to the class to determine what valid inputs are so that it can guarantee valid behaviour. Properties allow the class to take input from the user of the class and verify that it can guarantee correct behaviour with the data provided.

Granted, most people just use the most basic functionality for a property, which is to just return or set the field. But when clients of the class are using the property, you can easily change the property to do data checking later without changing how the clients use the class.

Hope that helps.

Visit BoneSoft.com

Mobile application

acodman21-Jun-06 0:15

acodman

21-Jun-06 0:15

Hi all! I want to start programming for smart devices, I have installed smart mobile device 2003 and each time I run it, it keeps telling me that an error occured continue yes or no. I want to find out if there's any other software I need to install.

Thanks

AC

Re: Mobile application

Not Active21-Jun-06 2:52

Not Active

21-Jun-06 2:52

It might be a little more helpful to explain the error a little more. Are you getting the error when you run Visual Studio or when you are trying to run the application you have created? Are you trying to use the emulator or a device?

Talal Sultan21-Jun-06 0:07

Re: Running MSI file from inside a windows forms application

21-Jun-06 0:07

hi
I'm trying to execute an MSI installation file from inside a windows application. Here's what I'm doing:

Process p = null;
p = new Process();
p.StartInfo.WorkingDirectory = path;
p.StartInfo.WindowStyle = ProcessWindowStyle.Normal;	
p.StartInfo.FileName = "Microsoft_WSE_20_SP3_Runtime.msi";
p.Start();
p.WaitForExit();

When I run it, I get a message saying the installation package could not be opened. When I run it from the command prompt, it works.

I use the same code to run osql commands and those work fine.

Any ideas what I'm doing wrong? Confused | :confused:

thanks,
Talal

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

Ed.Poore21-Jun-06 1:43

Re: Running MSI file from inside a windows forms application

21-Jun-06 1:43

Try setting the UseShell property of the Process.StartInfo class.

The Welsh will always support two teams: The Welsh, and anyone playing England

Talal Sultan21-Jun-06 2:54

Re: Running MSI file from inside a windows forms application

21-Jun-06 2:54

Thanks! It works. I have just tested it on the dev machine.

I couldn't help noticing your signature...I get that you were supporting Sweden yesterday? Big Grin | :-D

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

Ed.Poore21-Jun-06 6:04