C# Discussion Boards - CodeProject

Pete O'Hanlon2-Nov-07 1:08

2-Nov-07 1:08

Here's the confusing thing - value types are always placed where they are declared. If they are declared within a method, they will always appear on the stack. If it's declared outside a method, but inside a reference type, it will be placed within the reference type (on the heap).

Confusing huh?

Deja View - the feeling that you've seen this post before.

Re: Where System.Int32 will be stored?

J a a n s2-Nov-07 1:29

J a a n s

2-Nov-07 1:29

Thanks Pete

BTW I have came across an interesting article
What goes where?[^]

*jaans

Re: Where System.Int32 will be stored?

Pete O'Hanlon2-Nov-07 1:40

Pete O'Hanlon

2-Nov-07 1:40

J@@NS wrote:
BTW I have came across an interesting article

Excellent. Well found.

Deja View - the feeling that you've seen this post before.

Append data to excel using c#

ramyanaidu2-Nov-07 0:44

ramyanaidu

2-Nov-07 0:44

i have code to save the data to new excel files i need to save and append tha data to already saved file using c# can any one help in this for me

Ramya

Re: Append data to excel using c#

Jimmanuel2-Nov-07 3:41

Jimmanuel

2-Nov-07 3:41

There isn't a whole lot different between opening an existing file and saving new data to it and opening a new file and saving new data to it. If you already have code to do one then the other is pretty much a cut and paste job . . .

is there something specific you're having a problem with?

How to make, the First Letter of sentence as Capital.

pashitech2-Nov-07 0:40

pashitech

2-Nov-07 0:40

Hi all,

I am trying to make the first letter to display as Capital,
i.e when user enters a text in the TextBox the first letter should be capital and the rest should be as they are.
e.g
this is a good example.
should be,
This is a good example.

Thanks,
Prashanth

Re: How to make, the First Letter of sentence as Capital.

Pete O'Hanlon2-Nov-07 0:51

Pete O'Hanlon

2-Nov-07 0:51

The simplistic way:
Capture the keypress event, then read in the text that's already in the textbox. If this is the first alphabetic character, then convert it to uppercase using the string functions. Put the text into the textbox, then set the handled to true.

This is an extremely simplistic way that doesn't take into account things like the user entering text and then moving back to the start of the textbox and entering more text. A more comprehensive way requires you to change the contents of the textbox when it loses focus. That way, you can always find what the first character was - however, this is a single shot solution.

Deja View - the feeling that you've seen this post before.

Re: How to make, the First Letter of sentence as Capital.

pashitech2-Nov-07 1:07

pashitech

2-Nov-07 1:07

Thanks alot for ur suggestion..
but I want to make the very first letter that the user is going to enter should be Capital..
Not the one thatz already in textbox , I want to make the one which user is going to enter.
thanks

Re: How to make, the First Letter of sentence as Capital.

Baconbutty2-Nov-07 1:12

Baconbutty

2-Nov-07 1:12

So you need a psychic handler?

The handler will instinctively know which letter you are ABOUT to press and set CAPS LOCK ON and then turn it off once the letter has been pressed.

Cool.

I still remember having to write your own code in FORTRAN rather than be a cut and paste merchant being pampered by colour coded Intellisense - ahh proper programming - those were the days

Re: How to make, the First Letter of sentence as Capital.

Brady Kelly2-Nov-07 1:21

Brady Kelly

2-Nov-07 1:21

Surely it can know which letter you just pressed, at what position, and change that letter to a capital?

MY NEW BLOG

Re: How to make, the First Letter of sentence as Capital.

pashitech2-Nov-07 1:21

pashitech

2-Nov-07 1:21

Thanks, but
I don't know whatz psychic handler,
and How should I configure this handler to make the very first letter to make to CAPITAL.
as I am new here,please be clear.
thanks

Re: How to make, the First Letter of sentence as Capital.

Vasudevan Deepak Kumar2-Nov-07 6:21

Vasudevan Deepak Kumar

2-Nov-07 6:21

Just like Microsoft Word Automatic Grammar/Spelling check? Smile | :)

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

Re: How to make, the First Letter of sentence as Capital.

c0ax_lx2-Nov-07 1:53

c0ax_lx

2-Nov-07 1:53

psychic handler, not perfect. but it works

<br />
textbox1.KeyDown +=new KeyEventHandler(Psychic_Handler);<br />

<br />
private void Psychic_Handler(object sender, KeyEventArgs e)<br />
        {<br />
            if (((TextBox)sender).Text.Length == 0)<br />
            {<br />
                ((TextBox)sender).Text = e.KeyCode.ToString().ToUpper();<br />
                e.SuppressKeyPress = true;<br />
                ((TextBox)sender).SelectionStart = 1; <br />
            }<br />
        }<br />

If it' stuck, DO NOT pull harder!

Re: How to make, the First Letter of sentence as Capital.

KennyPatel3-Nov-07 0:19

KennyPatel

3-Nov-07 0:19

Hi. This would be easy way to do first char in CAPS....

char ci = Convert.ToChar(TextBox1.Text.Substring(0, 1));
TextBox1.Text = TextBox1.Text.Remove(0, 1);
TextBox1.Text = ci.ToString().ToUpper() + TextBox1.Text;

Thanks

Re: How to make, the First Letter of sentence as Capital.

kieran@serif.net29-Jun-10 8:06

kieran@serif.net

29-Jun-10 8:06

Hey Prashanth,

take a look at this, it automatically capitalizes as you input text.

http://www.mardymonkey.co.uk/blog/index.php/2010/01/auto-capitalise-a-text-control-in-wpf/[^]

Kier

garbage collector

kalyan_24162-Nov-07 0:33

kalyan_2416

2-Nov-07 0:33

hi
all i was asked in interview how often the garbage collector
i.e. gc.collect() will get invoked
i know why? what? about garbage collectore but
interviewer asked me will it be for every 5 minutes the method invokes
can anyone help me...
bye

Re: garbage collector

J a a n s2-Nov-07 0:42

J a a n s

2-Nov-07 0:42

When 1) a memory allocation request exceeds the current generation 0 segment capacity (or because of an exlicit call to GC.Collect) and 2) the object is no longer reachable.

If we exclude GC.Collect calls, this means that a GC will only occur on allocation. In other words, objects may well be ready to be released but no allocations are made, meaning no GCs will occur, so memory usage will stay flat.

*jaans

Re: garbage collector

kalyan_24162-Nov-07 0:55

kalyan_2416

2-Nov-07 0:55

k thanx got it

Re: garbage collector

N a v a n e e t h2-Nov-07 0:51

N a v a n e e t h

2-Nov-07 0:51

kalyan_2416 wrote:
how often the garbage collector
i.e. gc.collect() will get invoked

Gc.Collect() will invoke garbage collector immediately. But AFAIK, we can't predict the timings when GC invoked when Collect() is not used. I guess it will be invoked when a cleanup is required.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

My Website | Ask smart questions

Re: garbage collector

kalyan_24162-Nov-07 1:11

kalyan_2416

2-Nov-07 1:11

nice quote
yup the other friend also says what u have guessed
thanx bye

Re: garbage collector

Mark Churchill2-Nov-07 1:29

Mark Churchill

2-Nov-07 1:29

IIRC explicitly calling GC.Collect() is generally a bad idea. The deal is that it will encourage the garbage collector to promote objects that survive collection to a higher generation. The higher generations are collected less aggressively - which has obvious performance implications.

Mark Churchill
Director
Dunn & Churchill

Re: garbage collector

Pete O'Hanlon2-Nov-07 1:44

Pete O'Hanlon

2-Nov-07 1:44

You recall correctly. There aren't many occassions, (I can't think or any offhand), where you should call it - let the runtime determine this.

Deja View - the feeling that you've seen this post before.

Re: garbage collector

Luc Pattyn2-Nov-07 5:37

Luc Pattyn

2-Nov-07 5:37

You may consider GC.Collect() when you want to get an optimal and/or repeatable
starting condition, examples:
- application has busy and idle periods, and wants to off-load as much work as possible
from the busy to the idle periods
- application is going to be observed/measured (as in the Setup method when using NUnit),
say for performance measurements.

And yes, these are exceptional situations.

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google

Re: garbage collector

Pete O'Hanlon2-Nov-07 0:54

Pete O'Hanlon

2-Nov-07 0:54

Garbage collection in .NET is not based on frequency. Instead, it is a sophisticated algorithm that will collect the object at some point after the object has become eligible for collection.

Have a read of this[^] article.

Deja View - the feeling that you've seen this post before.

Usercontrol : Creating arrayed Control

amienc2-Nov-07 0:05

amienc

2-Nov-07 0:05

Hi
I am writing a UserControl that contains 20 similar 'other' controls. My basic control is also a usercontrol consisting of a Panel and a Button inside a parent Panel.
I need to create 20 of these simple usercontrols onto a bigger Usercontrol.
I have done this by using a array of this.
>> ucPanels[] iPanels = new ucPanels[20];
I call this method :
>> private void createMainPanel()
{
int z = 1;
for (int i = 0; i < 20; i++)
{
iPanels[i] = new ucPanels();
iPanels[i].Name = "myPanel" + i.ToString();
Controls.Add(iPanels[i]);
iPanels[i].Location = new System.Drawing.Point(z, 5);
iPanels[i].Click += new System.EventHandler(iPanels_Click_1);
iPanels[i].MouseDown += new System.Windows.Forms.MouseEventHandler(iPanels_MouseDown_1);
//iPanels[i].Size = new System.Drawing.Size(50,84);
z += 51;
}
}

private void iPanels_Click_1(object sender, EventArgs e)
{
for (int i = 0; i < 20; i++)
{
// I cannot reach this event
}
}
Is there anything wrong with my code as I cannot call my event iPanels_Click_1

Thanks
Amien

Amien
Cape Town
South Africa

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