Re: Timer Class Help - C# Discussion Boards

Re: C# ListBox Justify Text

8-Jul-07 18:23

Simple answer? You dont

You could try measuring the text width and calculate the remaining space and fill it with calulated amount of spaces however you wont be able to get exact alignment as spaces in each font have a set size more than one pixel.

Delete your listbox and add a listview control and use that

You can add columns (so each part has a header), change alignment of each column and its easy to add items:

<br />
ListViewItem MyItem = new ListViewItem(new string[] {"Bob Marley","$10,000"} );<br />
listView1.Items.Add(MyItem);<br />

<br />
string sDescription = "Bob Marley";<br />
string sSalary = "$10,000";<br />
<br />
ListViewItem MyItem = new ListViewItem(new string[] { sDescription, sSalary });<br />
listView1.Items.Add(MyItem);<br />

-- modified at 0:50 Monday 9th July, 2007

Just to be clear, this is all considering there is more than one column... if you just need the salary in there and nothing else and want it right aligned you set the RightToLeft property to Yes. Thought i should cover all bases Smile | :)

Always more to learn, and i wouldn't have it any other way.

Luc Pattyn9-Jul-07 2:28

9-Jul-07 2:28

Hi,

if you really want to do that with a ListBox there are two ways:

1.
select a "non-proportional" font (such as "Courier New") where all characters
have the same width; then adjust the spaces/dots/whatever in your strings so
they all have the same length.

or
2.
Choose to draw the ListBox items yourself, by setting DrawMode to OwnerDraw;
and provide a handler for the DrawItem event (similar to a paint handler when
drawing in say a Panel). You do know the items in a ListBox dont have to be
strings ? They can be instances of whatever class you come up with, and
your DrawItem handler could make use of that...

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

regarding XML

praveenanand8-Jul-07 17:48

praveenanand

8-Jul-07 17:48

how to insert,update,to fill data to datagrid..using XML?

Re: regarding XML

Sathesh Sakthivel8-Jul-07 17:51

Sathesh Sakthivel

8-Jul-07 17:51

Hope the article by rudy.net here[^] in CP will help you.

Regards,

Satips. Rose | [Rose]

Don't walk in front of me, I may not follow;
Don't walk behind me, I may not lead;
Walk beside me, and just be my friend. - Albert Camus

Timer Class Help

DMWhiteDragon8-Jul-07 16:14

8-Jul-07 16:14

Ok to start i'll tell you what im doing, I have a InterOpWindow class that i created. It basically allows me easy talking between Process's and Thread's allowing me to just send strings all over however i like.

eg, to setup a window to talk to:

<br />
InterOpWindow MyCommandWindow = new InterOpWindow("some_window_name");<br />
MyCommandWindow.evDataCommandRecieved += new InterOpWindow.delDataRecieved(OnDataCommandRecieved);<br />
<br />
static void OnDataCommandRecieved(string sData)<br />
{<br />
	MessageBox.Show("Data: " + sData);<br />
}<br />

and to send data and check a window reference:

<br />
InterOpWindow.SendRemoteMessage("some_window_name", "my data message");<br />
InterOpWindow.CheckRemoteWindow("some_window_to_check");<br />

Nice and easy... just how i like it, im happy i got it working as i've only been C# coding for about 3 weeks heh.

Which is where i come to my problem with the timer class. What i assumed was fine was to keep enabling and disabling it to start and stop the monitoring process for command sending timeouts. However after the timer being used (and working) it seems to be 'dead' if i try to disable then enable it... the Tick event never fires.

Is the object being disposed? does it need a container to stay active? any thoughts would be great...

For now im just leaving it enabled for good and using a var to count around 3 ticks (1 second each) for timeout.

Of course i could have just stuffed up completely and its something small... ya never know Wink | ;)

<br />
public class InterOpWindow : NativeWindow<br />
{<br />
    ...<br />
    private Timer tmrTimeout = new Timer();<br />
    ...<br />
    public InterOpWindow(string sLocalWindowName)<br />
    {<br />
        ...<br />
        tmrTimeout.Tick += new EventHandler(tmrTimeout_Tick);<br />
    }<br />
}<br />

thats basically how i've set it up, any ideas would be great... thanks Smile | :)

Always more to learn, and i wouldn't have it any other way.

Luc Pattyn8-Jul-07 16:48

8-Jul-07 16:48

DMWhiteDragon wrote:
Is the object being disposed?

Good guess. The MSDN documentation on Forms.Timer clearly states on Enabled:
"The timer is not subject to garbage collection when the value is true."

This means there are two ways to keep a Forms.Timer alive (i.e. not collected):
1. make sure it is running
2. make sure to keep a reference to it (in a private member of one of your classes
as opposed to in a local variable of a method that has returned)

Wink | ;)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

DMWhiteDragon8-Jul-07 17:03

8-Jul-07 17:03

Thanks for the reply, i swear i checked MSDN and google... but ya can't always get a straight thought in ya head when you a little fustrated Wink | ;)

Seems i'll have to keep the way im doing it, as its already a private member of the class and its still being difficult.

I could use the API Timer i guess but that seems messy yes? Is there any other Timers hidden somewhere in this mind bogginly huge framework that might suit?

Always more to learn, and i wouldn't have it any other way.

Luc Pattyn8-Jul-07 17:15

8-Jul-07 17:15

Hi,

1.
There is also Threading.Timer and Timers.Timer; both of them run their handler
on a separate thread, not the GUI thread. And you must keep them alive too.

2.
I fail to see how exactly your timer might be collected: if you are able
to set its Enabled property true again, that means you are holding a reference,
so I believe something else is going on. If you need more help, show us the code !

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

DMWhiteDragon8-Jul-07 17:29

8-Jul-07 17:29

Well i did some more testing

I moved the class to a new blank project and forced some timeouts and its working fine, enabled/disabled/enabled etc. Go figure :/

So its bound to be something else, i'll get onto the other coders in the project and perhaps break one of their arms for making me think my class was broke Smile | :)

Always more to learn, and i wouldn't have it any other way.

Luc Pattyn8-Jul-07 17:31

Re: website Login with c# [modified]

8-Jul-07 17:31

You dont need arm parts to fix a timer...

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

website Login with c#

cardy18-Jul-07 15:14

cardy1

8-Jul-07 15:14

I don't know if I'm writing in the right topic but I hope it... Smile | :)

I've done a web site that allows file access only to certain users (registered). If a user is not logged in it has to do it before access to files.It works with cookies.
Is really simple to do this steps with the browser but I have no ideas on how to do it with c# code... I thought that I can do the login by calling the page login.aspx and to put the autenthication credential in the http body( POST METHOD). The question is: how can I do it?
I'd like to do: CALL FROM CODE THE URL "www.mywebsite.com/login.aspx?username=myid&password=pass"
(this is the GET method I'd like to use POST of http)
How can I intercept the data from the server?
Thanks to everyone will reply me...

DMWhiteDragon8-Jul-07 16:30