C# Discussion Boards - CodeProject

Henry Minute2-Nov-09 5:56

2-Nov-09 5:56

I have done this by using the following steps:

1) Start new Window Forms Project. Rename Form to MainForm, just so we both know what I'm referring to. You can just remember this bit if you have more than 2 brain cells. Big Grin | :-D

2) Add ChildForm to Project.
3) Add Menu to MainForm, with MenuItems for adding child forms. Complete the event handlers.
4) Now add your Panel to MainForm and Dock as required.
5) NOW!! set IsMDIContainer to true for MainForm.

Works for me! Hope it helps you. Smile | :)

[Edit]
I have just realized that the above is complete rubbish. Oh it works, but the order is irrelevant.
I have just created a new application in which I set IsMDIContainer before doing anything else, it still worked,
So I don't know what is going wrong with your application.
[/Edit]

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Re: C# MDI Forms layout [modified]

FBCode2-Nov-09 21:13

FBCode

2-Nov-09 21:13

Now it works to me too... Laugh | :laugh:

The panel wasn't docked! Maybe during my many tests and many properties changes I forgot to set it back to "docked"! Poke tongue | ;-P

But I've a new question. Big Grin | :-D

On the treeview there are one node and two childs. The text property of the father node is not completely visible, it's cutted for some reason I don't understand... The text is "Connessioni" and I can only see "Connessio".
The panel is 200 px large, that is sufficient to show the entire word. I tried to enlarge the treeview with no results. No changes also when I click on it, still remains cutted. The child nodes are good and the text (that is even longer than the father one) is printed correctly when I click on the +.
Maybe is a matter of some wrong property again? Confused | :confused:

UPDATE:
I tried to change the text to a shorter one but the problem still remains. With "Connes" I see only "Conne" and the "s" is cutted.
Using blank spaces after the text the problem solves, but I don't know if that's the only and correct way...

modified on Tuesday, November 3, 2009 6:34 AM

Accessing sound card

Darren Shields2-Nov-09 4:22

Darren Shields

2-Nov-09 4:22

Hi all,

I'm new to c# and I'm wondering how to access the sound card from my code so that I can sample the sound.

Thanks in advance
Darren

How can I know/see on which core a thread run ?

evyatar.v2-Nov-09 3:20

evyatar.v

2-Nov-09 3:20

If I have a multi-thread program, how can I know on which core
each thread run ?

Thanks..
--
Evyatar

Re: How can I know/see on which core a thread run ?

Abhishek Sur2-Nov-09 3:25

Abhishek Sur

2-Nov-09 3:25

Are you really using Multicore ??

The thread can only use Multi cores if its run using Parallel Extension. Its there if you add the Threading.dll that comes with the extension pack. Smile | :)

Otherwise, the process can run in a single core. Cool | :cool:

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

Re: How can I know/see on which core a thread run ?

harold aptroot2-Nov-09 3:50

harold aptroot

2-Nov-09 3:50

That isn't even true. Why do you think it is?

Re: How can I know/see on which core a thread run ?

Abhishek Sur2-Nov-09 6:09

Abhishek Sur

2-Nov-09 6:09

Then what does Parallel extension do ?
Tricky Programming on Multi-Core Processors[^]

You can see, threads running concurrently in more than one core if Parallel extension is used. Does this work with normal threads as well ?
If this is so, then I wonder what are the advantages of Parallel Extension ever.. And also why one would ever use an object of Task. Confused | :confused:

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

Re: How can I know/see on which core a thread run ?

harold aptroot2-Nov-09 6:23

harold aptroot

2-Nov-09 6:23

The parallel extensions have task stealing and convenient constructs such as Parallel.For
The parallel extensions can use multiple cores because they use threads

Re: How can I know/see on which core a thread run ?

Abhishek Sur2-Nov-09 20:23

Abhishek Sur

2-Nov-09 20:23

Thank you so much. Thumbs Up | :thumbsup:

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

Re: How can I know/see on which core a thread run ?

Luc Pattyn2-Nov-09 3:34

Luc Pattyn

2-Nov-09 3:34

Hi,

AFAIK you can't. Threads can run on any available core, and they are not restricted to a single core, so they may hop over to another one after a thread switch. You can reduce that freedom by setting ThreadAffinity/ProcessorAfinity but you really have to know your stuff to take advantage of that.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: How can I know/see on which core a thread run ?

Covean2-Nov-09 3:46

Covean

2-Nov-09 3:46

On Vista or higher there is a new function called
GetCurrentProcessorNumber. I think thats exactly what you are looking for.

Greetings
Covean

Re: How can I know/see on which core a thread run ?

Luc Pattyn2-Nov-09 3:49

Luc Pattyn

2-Nov-09 3:49

Right. The Win32 functions GetCurrentProcessorNumber and GetCurrentProcessorNumberEx are available through P/Invoke since Vista/Win7 respectively.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: How can I know/see on which core a thread run ?

harold aptroot2-Nov-09 7:30

harold aptroot

2-Nov-09 7:30

What about NTGetCurrentProcessorNumber? Seems to be available on older OS's

[DllImport("ntdll"), SuppressUnmanagedCodeSecurity]
public static extern int NtGetCurrentProcessorNumber();

Re: How can I know/see on which core a thread run ?

Luc Pattyn2-Nov-09 7:55

Luc Pattyn

2-Nov-09 7:55

The doc says: "NtGetCurrentProcessorNumber may be altered or unavailable in future versions of Windows. Applications should use the GetCurrentProcessorNumber function instead."

It is available on my Vista system; don't know about Win7.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: How can I know/see on which core a thread run ?

PIEBALDconsult2-Nov-09 3:51

PIEBALDconsult

2-Nov-09 3:51

Why would you care?

Re: How can I know/see on which core a thread run ?

evyatar.v2-Nov-09 3:56

evyatar.v

2-Nov-09 3:56

I want to measure core thruput on variety of programs.

Re: How can I know/see on which core a thread run ?

evyatar.v2-Nov-09 3:57

evyatar.v

2-Nov-09 3:57

Thanks all ..

I will go t check your answers and will come to give feedback... Smile | :)

Re: How can I know/see on which core a thread run ?

evyatar.v2-Nov-09 6:11

evyatar.v

2-Nov-09 6:11

Hi all ..

The GetCurrentProcessorNumber() work wonderful ..

so thanks to all the helpers Smile | :)

Re: How can I know/see on which core a thread run ?

Rajesh R Subramanian2-Nov-09 6:57

Rajesh R Subramanian

2-Nov-09 6:57

Hi,

Please mark the helpful answer(s) by clicking "Good Answer". I've done it for you now.

“Follow your bliss.” – Joseph Campbell

Re: How can I know/see on which core a thread run ?

evyatar.v2-Nov-09 10:59

evyatar.v

2-Nov-09 10:59

I did do that.. Smile | :)

Re: How can I know/see on which core a thread run ?

evyatar.v12-Nov-09 22:33

evyatar.v

12-Nov-09 22:33

Hi again..

Is there any another solution for win XP ?

I try this:

<br />
[DllImport("ntdll"), SuppressUnmanagedCodeSecurity]<br />
public static extern int NtGetCurrentProcessorNumber();<br />

and I get this exception:

System.EntryPointNotFoundException was unhandled
Message="Unable to find an entry point named 'NtGetCurrentProcessorNumber' in DLL 'ntdll'."
Source="XP_Multicore_try_0"
TypeName=""
StackTrace:
at XP_Multicore_try_0.Program.NtGetCurrentProcessorNumber()
at XP_Multicore_try_0.Program.loop() in C:\Documents and Settings\evyatarv\Desktop\XP_Multicore_try_0\XP_Multicore_try_0\Program.cs:line 24
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:

unable to instal my software in other machine

sudhir behera2-Nov-09 2:13

sudhir behera

2-Nov-09 2:13

hello,sir i have designed a software in c# .net.i have used the my sql databse.its working ok in my machine,becoz i have created it in my machine.packaging is ok.i have generated the sql script.when i am instaling this software instalation becomes successful,and also mysql databse.but when i am going to access the page its showing unhandle exception error.i have not used crystal report in my project.please help how will i instal it in other machine??its urgent.give me step by step procedure.

Re: unable to instal my software in other machine

musefan2-Nov-09 2:32

musefan

2-Nov-09 2:32

Step by Step procedure for what? All you have said is how successfully each part has gone. No, information about your problem except you have an unhandled exception.

Life goes very fast. Tomorrow, today is already yesterday.

Re: unable to instal my software in other machine

Christian Graus2-Nov-09 9:03

Christian Graus

2-Nov-09 9:03

You say a lot for someone who really tells us nothing. What is the exception ? Do you have .NET installed on the other machine ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

I can disable Minimize, maximize box in windows using API but restore box.

Kernel10012-Nov-09 2:04

Kernel1001

2-Nov-09 2:04

I use API following to disable minimize, maximize box in windows. But i can't do that with restore button. I'm quite confused.

SetWindowLong(hwnd, GWL_STYLE,0x16CC0000);

0x16CC0000: remove maximize, minimize box. But i can't find the other code for restore box.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.