Free resources - C# Discussion Boards

3-Jul-05 23:42

Yeah, you were right, there was an off by one error. Here's the right code.

int reversed = 0;
for (int i = 0; i<4; i++)
{
	reversed <<= 8;
	reversed |= (byte)(original & 0x000000FF);
	Console.WriteLine("{0:x}", reversed);
	original >>= 8;
}

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: BigEndian Format

S. Senthil Kumar3-Jul-05 23:40

Re: Outlook express add in

3-Jul-05 23:40

Apologies, my previous post had a small bug which caused an extra left shift to occur. Here's the correct code

int reversed = 0;
for (int i = 0; i<4; i++)
{
	reversed <<= 8;
	reversed |= (byte)(original & 0x000000FF);
	original >>= 8;
}

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

networking ?

Anonymous3-Jul-05 17:05

Anonymous

3-Jul-05 17:05

what is the best way to have a client wait for a response from the server? like a login system where the client sends the login info to the server and while the server checks the login info in a database the clients main thread holds till the read thread get a response from the server like good login or bad login.

Re: networking ?

Yulianto.3-Jul-05 18:32

Yulianto.

3-Jul-05 18:32

Anonymous wrote:
what is the best way to have a client wait for a response from the server?

Busy mouse pointer?

<italic>Work hard, Work effectively.

Outlook express add in

Wessam Fathi3-Jul-05 14:15

Wessam Fathi

3-Jul-05 14:15

I'm trying to develop an add-in for Outlook Express, the add-in is supposed to intercept sending mails and (optionally) add attachments to the mail being sent.

I have already done that on Microsoft Outlook using Visual Studio Tools for Office, but I couldn't find any way to do it on Outlook Express.

Help would be greatly appreciated, just point me on the way.

Thanks in advance,

Wessam Fathi

Wessam Fathi

Carsten Zeumer3-Jul-05 22:16

Carsten Zeumer

3-Jul-05 22:16

As far is i know there is no extension API for Outlook Express.
The only way i could think of doing this is to have a Proxy SMTP-Server handling all outgoing mails.

/cadi

24 hours is not enough

Free resources

Libor Tinka3-Jul-05 13:15

Libor Tinka

3-Jul-05 13:15

Is there a simple way how to determine, if there's enough memory for a new object, if I know its size?

For example, I have an imaging app and user (ape) wants to resize image to 34676x80900 pixels. It's too much for his machine, but app will try to create a huge bitmap this way:

<br />
try {<br />
  <br />
  bmp = new Bitmap(userSize.Width, userSize.Height);<br />
} catch () {<br />
<br />
  // Oops - probably not enough memory<br />
}<br />

My real application works with many Image objects and only dummy proofing are try-catch blocks, which are not preventing exceptions and are very slow.

Re: Free resources

Dave Kreskowiak3-Jul-05 16:21

Dave Kreskowiak

3-Jul-05 16:21

No, there isn't. You can only rough-guess if you've got enough free memory. Because if you have the amount you need, there's no way to tell that if, in that moment, it's all continguous.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

C# and ASP.NET

valvet3-Jul-05 12:59

valvet

3-Jul-05 12:59

Hey.. I'm very new to this but I'll try explaining the best I can.

Say I have a function in a "class library" project which gets imported by my "ASP.NET Web Application".

Now in my ASP.NET project I got:

private void Button1_Click(object sender, System.EventArgs e)
{
TestClass test = new TestClass();

test.TestFunction();
}

and my TestFunction looks like this:

public void TestFunction()
{
Console.WriteLine( "testing.." );
}

How would I go about writing the output of my TestFunction() to the actual page in my ASP.NET project? Do I need to set the message from TestFunction() to a public string and then use that string to display what I need on the web page?

Another example..

public void TestFunction()
{
try
{
Console.WriteLine( "testing.." );
}
catch( Exception E )
{
Console.WriteLine( "Ex: {0}", E.Message );
}
}

if TestFunction() should error now, it'll print out the Exception message to the console.. but I need it to print to the web page instead. I guess setting a string to the text now is not going to work.

Hope you understand and thanks for the help!

Re: C# and ASP.NET

Guffa3-Jul-05 13:35

Guffa

3-Jul-05 13:35

Make your function return the output as a string:

public string TestFunction() {<br />
   return "Testing...";<br />
}

From the page, you can put the text in a control:

private void Button1_Click(object sender, System.EventArgs e) {
TestClass test = new TestClass();
MyControl.Text = test.TestFunction();
}

For the error handling, you can store the error text in a local variable, and supply a property for fetching the value. You can return a null value from the function to signal that an error occured:

private string lastError;

public string LastError { get { return lastError; } }

public string TextFunction() {
try {
return "Testing...";
} catch (Exception E) {
lastError = E.Message;
return null;
}
}

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

Re: C# and ASP.NET

valvet4-Jul-05 3:01

valvet

4-Jul-05 3:01

I see. Thanks alot for your reply!

rich text box problems

snouto3-Jul-05 12:40

snouto

3-Jul-05 12:40

hi all.
I have some problems in programming rich text box i succeeded to draw an image inside text box as emoticons by using dataformats and clipboard but the problems are:

1- the emoticons entered inside the rtb unanimated even if it is animated how can i implement that emoticons animated ?????????????

2- when the emoticons entered the richtext box if you point with your mouse pointer on it in rtb you can resize it how can i make it fixed ?????????

3- when i press my send button to send emoticons to the other user in chat the previous emoticons in my rich text box disappears and even the previous one transfered disappears in the private chat of the other user.
how can i make the emoticons don't disappears and make my rtb contains all the emoticons ?

Any help with this please .
i used the following code.

<br />
<br />
Bitmap myemot = new Bitmap(dialog.filename);<br />
ClipBoard.setDataObject(myemot);<br />
DataFormats.Format chm = DataFormats.GetFormat(DataFormats.Bitmap);<br />
rtb.text +=myusername + " \r\n";<br />
if(rtb.canpaste(chm))<br />
{<br />
rtb.paste(chm);<br />
}<br />

The Above Code makes the bitmap enter the rtb but with the previous problems any help with that please

Mess With The Best And Die Like The Rest

Miss With The Best And Die Like The Rest

controls

Anonymous3-Jul-05 11:20

Anonymous

3-Jul-05 11:20

is there a way to give basic windows controls a better look, like a skin ect.. or do you have to create a custom control?
if I have to make a custom control anyone know of a good sample?
thanks
j

Re: controls

Christian Graus3-Jul-05 11:53

Splash Screen Architecture

3-Jul-05 11:53

There are heaps of samples on this very site. I think XP has some options for controls, but overall, if you want to change how they look, you need to draw them yourself.

Christian Graus - Microsoft MVP - C++

1nsp1r3d3-Jul-05 10:24

1nsp1r3d

3-Jul-05 10:24

Hello all,
After reading almost all tutorials on splash screen for C# I'm quite confused which aproach to take. So I want to ask you what would be the best way. Personally, what I've been thinking is doing something like this:
1. In Main() start the splash thread
2. Run the Main form thread
3. main form thread sends signals to the splash thread about the progress
4. main form sends a signal to the splash thread that it has finished and the splash thread closes itself

The thing is that I've done some threading recently but I haven't actually encountered how to call object methods on different threads. Another thing which I'm not sure about is, should the function which is to be called for the start point of the thread call Application.Run(SplashThread) for the splash thread and Application.Run(MainForm) ? Any advice is greatly appreciated.

Christian Graus3-Jul-05 11:55

3-Jul-05 11:55

I don't see the need for another thread. Your main thread can just open a window which shows the splash screen, then close it using either a timer, or at a specific point during initialisation ( i.e. just before the main app is ready to show itself ).

Christian Graus - Microsoft MVP - C++

1nsp1r3d3-Jul-05 12:34

1nsp1r3d

3-Jul-05 12:34

But if I show the splash using Application.Run(Splash); the function will return when the splash is closed, am I right? If it's that way, then I'm in a deadlock. That's why I resort the threads.

Christian Graus3-Jul-05 12:49

3-Jul-05 12:49

1nsp1r3d wrote:
Application.Run(Splash);

Why would you do this ? I'm talking about a modeless form being shown by your application, during startup. Sure, you can use a thread, it just seems like overkill to me.

Christian Graus - Microsoft MVP - C++

S. Senthil Kumar3-Jul-05 19:33

3-Jul-05 19:33

Because using the same message pump for both the splash screen and the main application window might cause the splash screen to freeze if there is some heavy duty initialization involved.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Christian Graus4-Jul-05 13:09

4-Jul-05 13:09

How does a splash screen 'freeze' ? I guess if you move something in front of it ?

Christian Graus - Microsoft MVP - C++

S. Senthil Kumar4-Jul-05 19:22

4-Jul-05 19:22

Yes. And if you intend to show some dynamic text in the splash screen window.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

cmaissan4-Jul-05 14:16

cmaissan

4-Jul-05 14:16

You could do all your initializing in the Main() function.

Something like as follows:

static void Main()
{
// Create splash
fclsSpash splash = new fclsSplash();
splash.Show();

// Create main form
fclsMain main = new fclsMain();

// Initialize this
splash.SetMessage("Initializing this.");
main.InitializeThis();

// Initialize that
splash.SetMessage("Initializing that.");
main.InitializeThat();

// Close splash
splash.Dispose();

// Show main
main.Show();

// Start application
Application.Run();
}

-Chris