C# Discussion Boards - CodeProject

Robert M Greene29-May-06 3:37

29-May-06 3:37

Is there a simple way to find all the objects in a solution that should call Dispose() or the using() {} statement?

I have inherited a large project that has resource and handle leaks everywhere, is there some automatied tool that can help track down the .NET classes that use unmanaged resources?

.............................
There's nothing like the sound of incoming rifle and mortar rounds to cure the blues. No matter how down you are, you take an active and immediate interest in life.

Fiat justitia, et ruat cælum

Re: Dispose() Me

lmoelleb29-May-06 4:09

lmoelleb

29-May-06 4:09

You might want to have a look at FxCop[^]

Re: Dispose() Me

leppie29-May-06 4:25

leppie

29-May-06 4:25

Try the MS CLR Profiler, or the ANTS Profiler trial Smile | :)

How xacc.ide transforms text to colored words on the screen
Intel PentuimM (aka Centrino) undervolting

Creatinh a Business Object using CodeSmith templates

Wesley Burger29-May-06 3:30

Wesley Burger

29-May-06 3:30

Hi, Does anybody have a great CodeSmith template which creates nice Business Object using MS Enterprise Library?

Wesley Burger
083 518 7135

Multimedia in C#

Lju229-May-06 2:50

Lju2

29-May-06 2:50

Hello!

I'm developing multimedia application to play audio and video in C#

so, based on your experience what is the best way to play audio and video in c#?
i need something that works -- bulletproof --! and can do some simple effects
on audio?

Thanks in advance

Re: Multimedia in C#

Rei Miyasaka29-May-06 10:42

Rei Miyasaka

29-May-06 10:42

There's nothing out there that's bulletproof.

http://www.codeproject.com/cs/media/directshownet.asp[^]

Problem with windows form [modified]

JelleM29-May-06 2:41

JelleM

29-May-06 2:41

Hello CP,

I've got a huge problem with my VS .NET 2005.
I tried to move al my window forms to a folder I created in my project.
When I dragged all the forms to the folder, a few were torn apart.
Look here for an image: http://test.jellemampaey.be/problem.jpg
How can I link the .resx and .Designer files to the corresponding form back again?
TNX TNX TNX!

-- modified at 8:41 Monday 29th May, 2006

Re: Problem with windows form [modified]

Robert Rohde29-May-06 3:04

Robert Rohde

29-May-06 3:04

Have a look into the csproj file. Entries depending on another have an entry like that:
DependentUpon = "ColoredComboBox.cs"
You can manually add this to correct your problem.

Re: Problem with windows form [modified]

JelleM29-May-06 3:22

JelleM

29-May-06 3:22

1000x tnx!

Urgent When i m going to inherit from one form from another form

Shiv529-May-06 2:22

Shiv5

29-May-06 2:22

Error "Object not set to instance of object"

I got error when inherit one form from other using CV

Shiv529-May-06 2:20

Shiv5

29-May-06 2:20

The service System.Windows Form.Design.IEventHandleService already exists in the service Container

Event Initialize

JacquesDP29-May-06 2:06

JacquesDP

29-May-06 2:06

Hi.

How do you force an event to execute from a private void method????

I've tried object.event..... but the event is not accessible like that.

Thanx in advance.

He who laughs last is a bit on the slow side

Re: Event Initialize

stancrm29-May-06 2:39

stancrm

29-May-06 2:39

For example, if you have a button :

this.button1.Clicked += new EventHandler(button1_Clicked);

private void button1_Clicked(object sender, EventArgs e)
{
   MessageBox.Show("Hello World");
}

then you can call your event with :

button1_Clicked(this, EventArgs.Empty);

button1.PerformClick();

Re: Event Initialize

JacquesDP29-May-06 3:00

JacquesDP

29-May-06 3:00

Thanx a mil, worked perfectly

He who laughs last is a bit on the slow side

Memory allocation help

eric_tran29-May-06 1:16

eric_tran

29-May-06 1:16

Good day everyone,

I need to do memory allocation program with 2 functions
1. Allocate the size of memory on the heap
2. Return memory block

Is there anyone know algorithms or sample code?

Pls help, thanks so much.

eric

Re: Memory allocation help [modified]

Guffa29-May-06 3:31

Guffa

29-May-06 3:31

The .NET heap doesn't work that way.

You create an object, for instance an array of byte, and the space for the object is allocated on the heap. If you want to treat the data area of the object as a memory area, you have to use the fixed keyword to pin the object at the same address, otherwise the garbage collector may move the object at any time.

Example:

// create an array
byte[] b = new byte[1000];
// unsafe context to use pointers
unsafe {
   // pin the array in memory
   fixed (byte* p = b) {
      // fill the array
      byte* pp = p;
      for (int i=0; i<1000; i++) {
         *pp++ = 42;
      }
   }
   // outside fixed - the array may move again
}

---
b { font-weight: normal; }

-- modified at 9:37 Monday 29th May, 2006

Re: Memory allocation help [modified]

eric_tran29-May-06 3:44

eric_tran

29-May-06 3:44

Thanks so much Guffa

But how to allocate the size of memory on the heap and return the address of memory cell(memalloc(size)) and return memory block (memfree(addr))?

I'm not good at these stuff

Pls help me to solve out.

Thanks

eric

Re: Memory allocation help [modified]

Guffa29-May-06 5:17

Guffa

29-May-06 5:17

As I said, the .NET heap doesn't work that way. There are no methods to allocate memory on the heap.

You can create an object that contains the amount of data you need, but you can't safely access it using pointers without using the fixed keywork to pin the object in memory.

Freeing objects in the heap is handled by the garbage collector. When you don't have any references to the object any more, it's up for garbage collection, and will eventually be collected.

---
b { font-weight: normal; }

Re: Memory allocation help [modified]

eric_tran29-May-06 5:24

eric_tran

29-May-06 5:24

Thanks so much
I'll try now
Smile | :)

eric

Re: Memory allocation help

S. Senthil Kumar29-May-06 19:39

S. Senthil Kumar

29-May-06 19:39

Well, there's AllocHGlobal[^], but I doubt if the OP is looking for that.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: Memory allocation help

Guffa29-May-06 22:49

Guffa

29-May-06 22:49

AllocHGlobal allocates unmanaged memory, not memory from the heap as the OP requested.

But then again, not all posters know what they are asking for... Wink | ;)

---
b { font-weight: normal; }

Re: Memory allocation help

S. Senthil Kumar30-May-06 1:12

S. Senthil Kumar

30-May-06 1:12

Nitpicking, but the OP did not mention anywhere that he wanted memory from the managed heap Smile | :)

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

commad Promt problem[modified]

Support12329-May-06 1:05

Support123

29-May-06 1:05

its me again.

im still trying to send two commands to command prompt from c#. no luck yet.
the first command needs to change the current directory path to: c:\Program files\progressive projects\progress\reporttemplates
the second command needs to run a batch file inside this directory called fop.bat

my most recent attempt is....

string command=@"\\fop.bat -xml " + "\\ClientReportCard.xml " + "-xsl " + "\\" + Convert.ToString(TempName) + ".xsl " + "-pdf " + Convert.ToString(Salon.Library.GlobalVariables.Reports_Path) + "\\ClientRecordCard.pdf";

ProcessStartInfo startInfo = new ProcessStartInfo("cmd.exe");
// /c switch sends a command
startInfo.Arguments = "/C " + @"cd" + Convert.ToString(TempPath);
// redirect messages to this program
startInfo.RedirectStandardError = true;
startInfo.RedirectStandardOutput = true;
//don't execute using shellexecute API
startInfo.UseShellExecute = false;
//Don't open command prompt window
startInfo.CreateNoWindow = false;
System.Diagnostics.Process p = System.Diagnostics.Process.Start(startInfo);
startInfo.Arguments = "/C " + command;
startInfo.RedirectStandardError = true;
startInfo.RedirectStandardOutput = true;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = false;
System.Diagnostics.Process pp = System.Diagnostics.Process.Start(startInfo);
string output = p.StandardOutput.ReadToEnd();
string error = p.StandardError.ReadToEnd();
string output2 = pp.StandardOutput.ReadToEnd();
string error2 = pp.StandardError.ReadToEnd();
p.WaitForExit();
if (output.Length != 0)
shellControl1.WriteText(output);
else if (error.Length != 0)
shellControl1.WriteText(error);

BUT with this it executes the one command and forgets the directory path and then executes the second command. In this way it can't find the batch file. please help. iv been stugling with this on for days now.

He who laughs last...

-- modified at 7:23 Monday 29th May, 2006

Re: hi all

Support12329-May-06 1:18

Support123

29-May-06 1:18

O ja,

Do any of you know how to execute a batch file directly from that file path.
I type (in command prompt)

c:\program files\progressive projects\progress\reporttemplates\fop.bat

I get an error saying:

'c:\program' is not recognized as an internal or external command, operable program or batch file.

if i can find a way to run that command with one shot i'll be fine

Please help. Cry | :((

He who laughs last...

Re: hi all

lmoelleb29-May-06 1:30

lmoelleb

29-May-06 1:30

Put it in double quotes. To see how, simply drag the bat file from Windows Explorer into a command prompt.

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