C# Discussion Boards - CodeProject

Re: Fatal out of memory error.

shimin30-Dec-02 7:12

shimin

30-Dec-02 7:12

my program consists of a few classes so it is quite hard to post online..
by the way, is there a way to free the memory allocated? Cos i got this error "System.OutOfMemoryException".

Thanks alot

min

Re: Fatal out of memory error.

shimin30-Dec-02 7:14

shimin

30-Dec-02 7:14

Thanks alot for your help, i have solve the problem.. Thanks again.. Smile | :)

Telnet - sockets to a ServerIron load balancer

Chris Donnan30-Dec-02 6:03

Chris Donnan

30-Dec-02 6:03

Hey,

I have been working through many attempts to communicate with a ServerIron load balancer from a c#/ .Net app. I have tried an approach using a TcpClient, StreamReader and StreamWriter. Herein, I basically use a multithreaded approach and IAsyncResult callbacks. I have also tried a synchronous variation and a single threaded variation to reduce complexity in the face of continued lack of communication between my app and the load balancer. Alternatively I have tried using a Socket with my own read and write methods. I have searched and adopted a few other approaches from the web all to no avail.

Basically, I am having issues where I cannot find a return of control from the ServerIron and/ or It pauses at odd places in the return stream. It will not recognize the terminating character variations be it; cr, lf or crlf.

Apart from the specific implementation details, I am wondering if I am simply missing someting fundemental about telnet or about these machines. Others have recomended expect scripts, which I have looked at and effectively do the same thing I am attempting to do; read till you get a terminating character, then send data. I also do not want to leave the c# world at all, nor do I feel I should have to. I am not a beginner and I have several .Net apps in production. any help would be greatly appreciated.

Thanks,
Chris

Resizing Form

Mazdak30-Dec-02 3:40

Mazdak

30-Dec-02 3:40

What is the best way to prevent user to change the size of form?

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Re: Resizing Form

SHaroz30-Dec-02 5:02

SHaroz

30-Dec-02 5:02

Set the FormBorderStyle of the form. There are 6 or 7 different styles, so pick which one best suites you.

Re: Resizing Form

Mazdak30-Dec-02 7:25

Mazdak

30-Dec-02 7:25

Thanks.

Mazy

"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits

Creating Desktop themes

Balachandar Ganesan30-Dec-02 1:57

Balachandar Ganesan

30-Dec-02 1:57

Hi All,
I would like to get answer for the following questions.
1. In C# How do we create new themes for Desktop?.
2. How Intellisense Editors are build?. Is is it possible to do using C#?
3.Is there any book for Internationalization using .NET or C#?

Thanks and Regards
Balachandar Ganesan.

Re: Creating Desktop themes

leppie30-Dec-02 7:08

leppie

30-Dec-02 7:08

gbala wrote:
2. How Intellisense Editors are build?. Is is it possible to do using C#?

System.Reflection
EG. obj.GetType().GetMethods();

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Re: Creating Desktop themes

David Stone30-Dec-02 9:05

David Stone

30-Dec-02 9:05

gbala wrote:
In C# How do we create new themes for Desktop?.

You don't. The DLLs have to be signed by Microsoft in order for them to be used as proper themes. Otherwise you have to use ThemeXP or WindowBlinds. And I think those have to be C++ and COM DLLs.

I don't know whether it's just the light but I swear the database server gives me dirty looks everytime I wander past.
-Chris Maunder

Microsoft has reinvented the wheel, this time they made it round.
-Peterchen on VS.NET

Migration MFC(Win32) to C#

Wizard_0130-Dec-02 1:51

Wizard_01

30-Dec-02 1:51

hi,

Could you suggest some link about "who to make this MFC code in C#", ebook,book or something like this ?

thanx Smile | :)

I thing many people will need this Wink | ;)

Wizard_01

Re: Migration MFC(Win32) to C#

Mazdak30-Dec-02 7:31

Mazdak

30-Dec-02 7:31

Could you convert apple to orange? Wink | ;)

How to register the Com+ component on Client without msi file?

Aaron K.B. Huang29-Dec-02 19:00

Aaron K.B. Huang

29-Dec-02 19:00

As the title, how can I perform that with programmatically?
My Com+ plus is inherited from ServicedComponent and implements
an interface(dual) defining by myself. Thanks ahead! Confused | :confused:

Click event problem

Nick Parker29-Dec-02 13:55

Nick Parker

29-Dec-02 13:55

Does anyone know why the click event won't fire when the opacity is set to 0?

Nick Parker

You see the Standards change. - Fellow co-worker

Re: Click event problem

Paul Ingles29-Dec-02 14:01

Paul Ingles

29-Dec-02 14:01

No idea, but it may well be that when opacity is 0 its visibility is effectively set to false and so click events can't be generated. Doesn't really help, but a possible rationalisation Big Grin | :-D

--
Paul
"If you can keep your head when all around you have lost theirs, then you probably haven't understood the seriousness of the situation."
- David Brent, from "The Office"

MS Messenger: paul@oobaloo.co.uk
Sonork: 100.22446

Re: Click event problem

Nick Parker29-Dec-02 14:27

Nick Parker

29-Dec-02 14:27

Paul Ingles wrote:
but it may well be that when opacity is 0 its visibility is effectively set to false and so click events can't be generated. Doesn't really help, but a possible rationalisation

Ahh, that may very well be true, I guess that leads me to my next problem, locating the mouse coord. when outside the form? Ah, this is so much damn fun. Roll eyes | :rolleyes:

Nick Parker

You see the Standards change. - Fellow co-worker

Re: Click event problem

James T. Johnson29-Dec-02 19:15

James T. Johnson

29-Dec-02 19:15

Nick Parker wrote:
locating the mouse coord. when outside the form?

That part is easy Smile | :)

Use the static MousePosition property on the Control class. This property calls ::GetCursorPos and returns the result, so the behavior behind it is the same.

James

"The elastic retreat rings the close of play as the last wave uncovers
the newfangled way.
But your new shoes are worn at the heels and
your suntan does rapidly peel and
your wise men don't know how it feels to be thick as a brick."
"Thick as a Brick" from Thick as a Brick, Jethro Tull 1972

Re: Click event problem

Nick Parker30-Dec-02 1:22

Nick Parker

30-Dec-02 1:22

James T. Johnson wrote:
Use the static MousePosition property on the Control class. This property calls ::GetCursorPos and returns the result, so the behavior behind it is the same.

Thanks James, that worked perfectly. Smile | :)

Nick Parker

You see the Standards change. - Fellow co-worker

Re: Click event problem

Nick Parker30-Dec-02 1:29

Nick Parker

30-Dec-02 1:29

Nick Parker

You see the Standards change. - Fellow co-worker

opening a default file browser of sorts

jtmtv1829-Dec-02 12:51

jtmtv18

29-Dec-02 12:51

i have a question that i think i need help with. i want to
find a way too open a folder from with in my program by clicking a button and it opening in the default maner (i.e going my computer c:\ ,ect..)
could the following code do it ? (i cant try it yet im not at home.)

//variable called at beging of program
string CurrentDirectory
CurrentDirectory =Environment.CurrentDirectory.ToString();

private void OpenDirect(object sender, System.EventArgs e)
{
System.Diagnostics.Process.Start(CurrentDirectory\FolderIwantToOpen)
}

i havent tryed that yet but not sure if it will work if it wont can someone help me with this subject ?

Thank you,
Jesse M

Re: opening a default file browser of sorts

jtmtv1829-Dec-02 13:05

jtmtv18

29-Dec-02 13:05

oops typo....heres the correction.

string CurrentDirectory
CurrentDirectory =Environment.CurrentDirectory.ToString();

private void OpenDirect(object sender, System.EventArgs e)
{
System.Diagnostics.Process.Start(CurrentDirectory+@"\FolderIwantToOpen")
}

Re: opening a default file browser of sorts

Nick Parker29-Dec-02 14:33

Nick Parker

29-Dec-02 14:33

jtmtv18 wrote:
i havent tryed that yet but not sure if it will work if it wont can someone help me with this subject ?

This seems to work for me:

private void button1_Click(object sender, System.EventArgs e)
{
	string s;
	s = Environment.CurrentDirectory.ToString();
	System.Diagnostics.Process.Start(s);

}

You will need to identify the folder you want as a string field however, which you didn't do above.

Nick Parker

You see the Standards change. - Fellow co-worker

Have someone www.learnvisualstudio.net videos?

gicio29-Dec-02 11:33

gicio

29-Dec-02 11:33

Have someone any www.learnvisualstudio.net videos?
If you want we can exchange some videos.

gicio

[C#] Validation class for events?

gicio29-Dec-02 11:32

gicio

29-Dec-02 11:32

Hi,

I develop an application that have 20 windows forms with many TextBoxes.
All TextBoxes have the same validation...
I write in all classes the same validation like that:

[CODE]
//if the user press a key down at txtDisplacement we check which one was pressed down
#region KeyDownInTxtDisplacement code
private void KeyDownInTxtDisplacement(object sender, System.Windows.Forms.KeyEventArgs e)
{
CheckWhichKeyDown(e);
}
#endregion

//if the user press a key down at txtModel we check which one was pressed down
#region KeyDownInTxtModel code
private void KeyDownInTxtModel(object sender, System.Windows.Forms.KeyEventArgs e)
{
CheckWhichKeyDown(e);
}
#endregion

//we check which key is pressed
//if key Enter or Return or Tab is pressed
//we go throw DoWhenOneTextBoxIsMarkedRed()
#region CheckWhichKeyDown code
private void CheckWhichKeyDown(System.Windows.Forms.KeyEventArgs e)
{
if(e.KeyCode==Keys.Enter || e.KeyCode==Keys.Return || e.KeyCode==Keys.Tab)
{
ValidateThis();
}
}
#endregion

//when special key is press we enable the button
#region ValidateThis code
private void ValidateThis()
{
cmdAddToDataBase.Enabled = true;
}
#endregion
[/CODE]

CheckWhichKeyDown and ValidateThis should be in one validation class.
How I can write a validation class that validate ALL TextBoxes from all classes.
Any ideas?
Or do you know some sample validation classes available on www?

gicio

Re: [C#] Validation class for events?

Nick Parker29-Dec-02 14:24

Nick Parker

29-Dec-02 14:24

gicio wrote:
CheckWhichKeyDown and ValidateThis should be in one validation class.
How I can write a validation class that validate ALL TextBoxes from all classes.
Any ideas?

Sure, I would highly suggest this so you aren't rewriting code all the time, simply add a new class within your application, possibly like the following:

namespace test
{
  /// <summary>
  /// Summary description for Validation.
  /// </summary>
  public class Validation
  {
	public Validation()
	{}
		
	public bool CheckWhichKeyDown(System.Windows.Forms.KeyEventArgs kea)
	{	
		if(kea.KeyValue == 13)	
			return true;
		else
			return false;
	}

	public bool SomeOtherFunctionHere()
	{
		return true;
	}
  }
}

Then, say for example in any of your KeyDown event handlers you can implement it like the following, keep in mind my namespace for this example is titled test.

private void textBox1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
	test.Validation v = new Validation();
	if(v.CheckWhichKeyDown(e) == true)
		MessageBox.Show("You hit enter.");
	else
		MessageBox.Show("You hit " + e.KeyData.ToString());
}

The idea is that you are creating an instance of a class, your validation class, and then invoking methods against that instance. Hope this helps.

Nick Parker

You see the Standards change. - Fellow co-worker

Re: [C#] Validation class for events?

gicio30-Dec-02 6:18

gicio

30-Dec-02 6:18

thanks for this great solution!!!

gicio

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