Re: Printing - C# Discussion Boards

24-Mar-02 6:14

I want to type cast the text in text box to integer?

Another guestion is that how to set text box tht the user can only type numbers
into it?

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

Re: Simple Question

James T. Johnson24-Mar-02 9:33

James T. Johnson

24-Mar-02 9:33

Mazdak wrote:
I want to type cast the text in text box to integer?

Int32.Parse(myString); if it throws an exception the string wasn't an integer Smile | :)

Mazdak wrote:
Another guestion is that how to set text box tht the user can only type numbers
into it?

Quick solution is to look for and use the masked edit C# control here on CP; secondary solution is to take the code it uses (the Key* events) and handle those the same way.

James

Sonork ID: 100.11138 - Hasaki
"Smile your little smile, take some tea with me awhile.
And every day we'll turn another page.
Behind our glass we'll sit and look at our ever-open book,
One brown mouse sitting in a cage."
"One Brown Mouse" from Heavy Horses, Jethro Tull 1978

Re: Simple Question

Mazdak24-Mar-02 19:29

24-Mar-02 19:29

Thank you friend Smile | :)

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

Printing

BLaZiNiX23-Mar-02 23:39

BLaZiNiX

23-Mar-02 23:39

I want to create a Report using GDI+ and Drawing with C#, fot that part i'm ok but How can I print this report and how make a printpreview of it ???

Please give me the answer if you have if Smile | :)

Thanks

BLaZiNiX

Mazdak24-Mar-02 4:47

24-Mar-02 4:47

Use PrintPreviewcontrol in form edoitor.

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

BLaZiNiX24-Mar-02 6:10

BLaZiNiX

24-Mar-02 6:10

Yes that I know, bu what I don't know it's how print a Window Form, check what I want to do :

Create a Window Form to add a rapport I will make using Graphics. I want to make a Print Preview of this and also I want To PRINT the FORM(al the graphics I created) ??

Thanks
BLaZiNiX

Mazdak24-Mar-02 6:55

24-Mar-02 6:55

ok,I have very very simple example of print and print preview application.You can send me your email to send it for you.Maybe it helps you. Of course it helps you if you have never use printing in your C# apllications.

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

How to call the default handler?

BLaZiNiX24-Mar-02 8:14

BLaZiNiX

24-Mar-02 8:14

jonathan.pouliot@tecksys.com

Thanks a lot boss
BlaZiNiX

Nish Nishant23-Mar-02 21:43

23-Mar-02 21:43

I have a problem.
I have a Mouse-down handler for a list box.
The problem is that the list box's selected item wont change till my handler has exited.
Lets say the list box contains two items
----------
|apple |
|orange | <- selected
----------

Now if I click on apple and do a :-
MessageBox.Show(listbox.SelectedItem.ToString())

I still get orange. Next time I click I get apple.
What happens is that my handler gets called and only afterwards does the real handler gets called which changes the selected item index.

Now how do call the default handler

something like calling the base class handler

Regards
Nish Confused | :confused:

Oh, I don't know why she's
leaving, or where she's gonna go
I guess she's got her reasons but I just don't wanna know
'Cos for 24 years I've been living next door to Alice
24 years just waitin' for a chance
To tell her how I feel and maybe get a second glance
Now I gotta get used to not living next door to Alice

David Wengier23-Mar-02 23:47

23-Mar-02 23:47

Why are you using MouseDown? Why not just use click? The problem with MouseDown is that a "click" hasnt happened until the mouse has been released, ie, MouseUp.

To illustrate, if you hold your mouse down on a list box and move the mouse up and down, the selection will change. Thus lifting the mousebutton "locks in" the item that is selected.

Having said all of that, there may in fact be a way, i havent tried :p

--
David Wengier

TAC ad gone wrong: "Don't fool yourself, you're a bloody idiot."
Sonork ID: 100.14177 - Ch00k

Nish Nishant24-Mar-02 0:19

24-Mar-02 0:19

I need to use MouseDown as I am doing some drag/drop stuff

Nish

David Wengier24-Mar-02 1:06

24-Mar-02 1:06

You could always just use a simple hit-test to find out the item under the cursor. Assuming all of the items are the same height (ie, not OwnerDrawVariable) you could use :

private void listBox1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
	int iItem = (e.Y / listBox1.ItemHeight) + listBox1.TopIndex;
	if (iItem > listBox1.Items.Count - 1)
	{
		lblCount.Text = "none";
	}
	else
	{
		lblCount.Text = listBox1.Items[iItem].ToString();
	}
}

--
David Wengier

TAC ad gone wrong: "Don't fool yourself, you're a bloody idiot."
Sonork ID: 100.14177 - Ch00k

Nish Nishant24-Mar-02 1:11

24-Mar-02 1:11

Thanks David

But James Johnson suggested another solution to me :-

IndexFromPoint

Nish Smile | :)

David Wengier24-Mar-02 1:14

24-Mar-02 1:14

Nish [BusterBoy] wrote:
IndexFromPoint

ROFL... that exists? Thats about my luck these days Big Grin | :-D

--
David Wengier

TAC ad gone wrong: "Don't fool yourself, you're a bloody idiot."
Sonork ID: 100.14177 - Ch00k

Nish Nishant24-Mar-02 1:20

24-Mar-02 1:20

David Wengier wrote:
ROFL... that exists? Thats about my luck these days

Smile | :)

Nish

C# errors

Mazdak23-Mar-02 19:50

23-Mar-02 19:50

When I unhandled error thrown,it shown me error message,Is there any document to tell me how to fix this error?

Mazy

"So,so you think you can tell,
Heaven from Hell,
Blue skies from pain,...
How I wish,how I wish you were here."
Wish You Were Here-Pink Floyd-1975

Re: C# errors

James T. Johnson24-Mar-02 22:00

James T. Johnson

24-Mar-02 22:00

You can lookup what the exception is and what threw it to track down the offending code.

If you don't have the documentation locally it is available online @ MSDN.

James

Sonork ID: 100.11138 - Hasaki
"Smile your little smile, take some tea with me awhile.
And every day we'll turn another page.
Behind our glass we'll sit and look at our ever-open book,
One brown mouse sitting in a cage."
"One Brown Mouse" from Heavy Horses, Jethro Tull 1978

Control Arrays

23-Mar-02 13:02

How do you implement control arrays in C#?

23-Mar-02 13:28

And why is everyone so against them!!! I mean, every time I turn around, MS is throwing them out: Can't do them in VB.Net, couldn't do it (could hack it) in MFC, etc.

What is the deal!!!

David Wengier23-Mar-02 14:13

23-Mar-02 14:13

You dont need control arrays. In VB, they gave you the ability to write one event handler for a whole bunch of controls. With AddHandler in VB.NET (or using the += operator for events in C#) you can acheive the same thing, with the extra advantage that they dont even have to be the same type of controls, or the same events.

The other thing it let you do in VB was to add controls at run time. In VB.NET and C# this is now even easier.

Control arrays were an ugly way to do what .NET has made fairly elegant.

--
David Wengier

TAC ad gone wrong: "Don't fool yourself, you're a bloody idiot."
Sonork ID: 100.14177 - Ch00k

23-Mar-02 18:44

But I want to be able to use loops when I'm working with my controls...drawing them for instance...

An event isn't going to help me do that!