C# Discussion Boards - CodeProject

Paladin20001-Jul-10 5:30

Paladin2000

1-Jul-10 5:30

In your solution explorer, right-click References (looks like a folder), Add Reference. Then find the one you need.

I will advise you that using keyloggers maliciously (such as to spy on someone, steal passwords etc) is ill-advised, and probably illegal.

Re: Cant use System.Windows

Richard MacCutchan1-Jul-10 4:55

Richard MacCutchan

1-Jul-10 4:55

A console application does not include Windows by default. You need to add it to the References section of your project in order to use it. However, if you are developing an application that needs Windows why would you start with a console app?

It's time for a new signature.

Re: Cant use System.Windows

ayandelhi1-Jul-10 4:58

ayandelhi

1-Jul-10 4:58

sir, thats m asking.. how shud i... actually i'm new to VS2008 and C#.. thats y stuck here...

Re: Cant use System.Windows [modified]

Richard MacCutchan1-Jul-10 5:38

Richard MacCutchan

1-Jul-10 5:38

Well, I wonder how you expect to write a working application if you do not understand the basics.

However

Use your mouse to right-click on the References item in Solution Explorer.
Select the .NET tab in the popup dialog.
Scroll down to System.Windows.Forms, and select it.
Click on OK.
Add the using statement to your source module.

[edit]Did I say something wrong here? Got a 1 vote for it anyway[/edit]

It's time for a new signature.

modified on Thursday, July 1, 2010 1:57 PM

Re: Cant use System.Windows

Paladin20001-Jul-10 8:40

Paladin2000

1-Jul-10 8:40

I have noticed that some people down-vote things they don't want to hear, regardless of veracity or technical merit.

I wouldn't let it get you down.

Re: Cant use System.Windows

Richard MacCutchan1-Jul-10 9:51

Richard MacCutchan

1-Jul-10 9:51

Timothy CIAN wrote:
I wouldn't let it get you down.

Oh, it doesn't; I make too many mistakes to worry about criticism. I would just prefer to have an explanation of what I did wrong.

It's time for a new signature.

Re: Cant use System.Windows

ayandelhi1-Jul-10 5:22

ayandelhi

1-Jul-10 5:22

i found an answer...

right click on the solution and then add reference of System.Windows.Forms
this solves my problem..

fixed scope

Chesnokov Yuriy1-Jul-10 0:46

Chesnokov Yuriy

1-Jul-10 0:46

How to extend fixed scope?
I've got array of byte* native pointers and I need to assign them managed byte[] arrays. But that can be done in a fixed {} block statement.

Чесноков

Re: fixed scope

Luc Pattyn1-Jul-10 0:55

Luc Pattyn

1-Jul-10 0:55

You can get a permanent fix through the GCHandle class. It is used in here[^] for passing arrays.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

Please use < PRE > tags for code snippets, it preserves indentation, and improves readability.

Re: fixed scope

Chesnokov Yuriy1-Jul-10 7:56

Chesnokov Yuriy

1-Jul-10 7:56

that is what I was looking for, thanks

Чесноков

Re: fixed scope

Luc Pattyn1-Jul-10 9:28

Luc Pattyn

1-Jul-10 9:28

you're welcome.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

Please use < PRE > tags for code snippets, it preserves indentation, and improves readability.

How to use HashSet

raju_shiva1-Jul-10 0:14

raju_shiva

1-Jul-10 0:14

Hi Experts,
I am new to C#,I am trying to use

HashSet stringSet = new HashSet { "abc", "aa" };

Bu i am getting error as "A new expression requires () or [] after type"

Whethier i should include any header file.

Thanks
Raj

Re: How to use HashSet

Gonzalo Cao1-Jul-10 0:19

Gonzalo Cao

1-Jul-10 0:19

try this:

HashSet<string> stringSet = new HashSet<string> { "abc", "aa" } ;

Re: How to use HashSet

Luc Pattyn1-Jul-10 0:53

Luc Pattyn

1-Jul-10 0:53

HashSet<string> stringSet = new HashSet<string>() { "abc", "aa" };
foreach (string s in stringSet) log(s);

works well on .NET 3.5 or 4.0

FWIW: the constructor parentheses are optional here!

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

Please use < PRE > tags for code snippets, it preserves indentation, and improves readability.

Re: How to use HashSet

raju_shiva1-Jul-10 1:48

raju_shiva

1-Jul-10 1:48

Hi sir,
I tried the above but i am getting error as "{ "abc", "aa" };"

For this line ,its getting error

Error	1	; expected	E:\WindowsApplication1\WindowsApplication1\Form1.cs	66	63	WindowsApplication1
Error	2	; expected	E:\WindowsApplication1\WindowsApplication1\Form1.cs	66	70	WindowsApplication1
Error	3	Invalid expression term ','	E:\WindowsApplication1\WindowsApplication1\Form1.cs	66	70	WindowsApplication1
Error	4	; expected	E:\WindowsApplication1\WindowsApplication1\Form1.cs	66	72	WindowsApplication1
Error	5	; expected	E:\WindowsApplication1\WindowsApplication1\Form1.cs	66	77	WindowsApplication1

Re: How to use HashSet

Laxman Auti1-Jul-10 1:12

Laxman Auti

1-Jul-10 1:12

raju_shiva wrote:

Bu i am getting error as "A new expression requires () or [] after type"

Check answer at your previous question http://www.codeproject.com/Messages/3521515/Re-std-map-in-Csharp.aspx[^]

Knock out 't' from can't, you can if you think you can. Cool | :cool:

Re: How to use HashSet

Daniel Grunwald2-Jul-10 0:31

Daniel Grunwald

2-Jul-10 0:31

The collection initializer syntax "new X { elements }" is new in C# 3.0. The error message looks like you're using a C# 2.0 compiler (VS 2005?).
You could rewrite this snippet to C# 2.0 by using explicit calls to Add(), but that still won't help you as the HashSet class is new in .NET 3.5 as well.

HashSet<string> stringSet = new HashSet<string>();
stringSet.Add("abc");
stringSet.Add("aa");

User control Name

chrisclarke1130-Jun-10 23:35

chrisclarke11

30-Jun-10 23:35

Hi
I have a libary with some user controls which are used on different projects. What i want to do is when one of these controls are place on a form, you have to set the controls name before its added to the project. Is this possible at all.

Thanks

Chris

Chris

Re: User control Name

freakyit30-Jun-10 23:44

freakyit

30-Jun-10 23:44

hiiiii,

for me it sounds you developed your own Designer ?!??
in that case you need to implemented the INameCreationService.

Smile | :)

Re: User control Name

chrisclarke111-Jul-10 0:10

chrisclarke11

1-Jul-10 0:10

hi
No i havent developed my own designer. Just that i want to be promted to input the controls name

Chris

Re: User control Name

OriginalGriff1-Jul-10 0:42

OriginalGriff

1-Jul-10 0:42

If what you are asking is "When a designer drags my UserControl from the ToolBox to his form, he should be prompted to set the controls Name property - how do I do it?" Then AFAIK you can't. And you probably shouldn't if you can. If you did, it would make your control very different from the normal VS controls, and would probably really annoy some developers. Most of us do not use the default name fro most controls, preferring "tbPrintStatement" to "button52", but even I do not rename labels and so forth! If VS started insisting I did, I would be a bit pissed off.
Generally, I place my controls as a bunch, then change the name and text at the same time.

Did you know:
That by counting the rings on a tree trunk, you can tell how many other trees it has slept with.

Re: User control Name

chrisclarke111-Jul-10 2:05

chrisclarke11

1-Jul-10 2:05

Yes thats what i'm trying to do. I have wrote a set of controls for an HMI. the idea is to remove as much of the need for code as possibel so that some of my fellow engineers can do simple changes to the screens.

It would be really anoying if all controls did this but we just want the ones we have designed.

Chris

Re: User control Name

OriginalGriff1-Jul-10 2:11

OriginalGriff

1-Jul-10 2:11

Nasty! If you are letting your engineers make "simple changes to the screens" you do realise they will need full VS to do it? Which means they could do anything to your screens. Including f@ck them up completely...
If these guys are not bright enough to be trusted with default names and the ability to change them, then why are you going to trust them not to make a complete pigs-ear of the whole system?

Did you know:
That by counting the rings on a tree trunk, you can tell how many other trees it has slept with.

Re: User control Name

freakyit1-Jul-10 2:05

freakyit

1-Jul-10 2:05

hmmm i have to agree with you every time a promting for the name would suck Smile | :)

actually you need to write an addin for the IDE (VS oder #Develop).
The addin should override the INameCreationService of the DesignerHost.
then you can create a name the "normal" way or prompt for it Smile | :)

sooo far

Re: User control Name

freakyit1-Jul-10 2:27

freakyit

1-Jul-10 2:27

alright i have the solution worked out!! Smile | :)

but you need to wait till i am at home Wink | ;)

i will write an article about your problem because this is very interesing stuff Smile | :)

so please be patient..

greetz all over the world

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