Re: Unable to proper shutdown - Visual Basic Discussion Boards

Shameel10-Nov-09 5:06

10-Nov-09 5:06

When an app shuts down, the Operating System recovers memory allotted to that app. So you don't have to worry about it. Modern operating systems (including Windows) are pre-emptive, i.e., they don't need the permission or co-operation of the applications to recover memory.

Re: Disposing all objects

Paulo Zemek10-Nov-09 8:04

Paulo Zemek

10-Nov-09 8:04

Also, all .Net finalizers are run while the application shuts down.

Re: Disposing all objects

Shameel11-Nov-09 7:53

Shameel

11-Nov-09 7:53

Not necessarily. The runtime host can decide whether to run finalizers or not during application shutdown.

Unable to proper shutdown

Gagan.2010-Nov-09 2:29

Gagan.20

10-Nov-09 2:29

Hi all...

I have created a program that checks system's processor's ID and some registry keys before starting. After that it works in background.

The problem is here that when the program is in execution and I am trying to shutdown my system then my system is not shutting down and the problem is that Windows is unable to kill my program's execution forcefully or something like that. How to solve this problem, suggest me.

Thanks.

Gagan

Re: Unable to proper shutdown

Luc Pattyn10-Nov-09 2:33

Luc Pattyn

10-Nov-09 2:33

did you do anything special to get that?
is your app windowless?

maybe SystemEvents.SessionEnding could help you out.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Unable to proper shutdown

Gagan.2010-Nov-09 2:37

Gagan.20

10-Nov-09 2:37

Well, I am getting processor's ID by importing System.management namespace and bye creating objects of ManagementObject and ManagementObjectSearcher and getting registry keys by using my.computer.registry class.

Could you explain me your solution or do you have any piece of code?

Thanks.

Gagan

Re: Unable to proper shutdown

Luc Pattyn10-Nov-09 3:02

Luc Pattyn

10-Nov-09 3:02

use Google to research; you might find things like this[^].

Hmmm | :|

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Unable to proper shutdown

freakyit10-Nov-09 3:54

freakyit

10-Nov-09 3:54

hi man,

sounds like you have override the OnClosing / OnClose functions. And in there you set the EventArgs.Cancel to true?!?

if you do this you need to check the CancelEventArguments for a CloseReason.
in that case cast the CancelEventArgs to FormClosingEventArgs and check the Property CloseReason for CloseReason.WindowsShutdow,etc.. before setting args.Cancel to true.

hope i could help Smile | :)

bless

time and date

ghiez9-Nov-09 23:44

ghiez

9-Nov-09 23:44

can you help me how to use DTPicker in visual basic.

my system is reservation of lcd. i dont know the codes when im going to assign a date and time. for example im going to reserve an lcd for tomorrow and time. what codes will i use?? using DTPicker. Confused | :confused:

Re: time and date

dan!sh 10-Nov-09 0:33

dan!sh

10-Nov-09 0:33

You really seem to be lost. The user would choose the dates as the next day. Now, to get that date in your code, you can use the value or text property of the datetimepicker.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

Folder permission on Vista machine

~Khatri Mitesh~9-Nov-09 22:59

~Khatri Mitesh~

9-Nov-09 22:59

Hello,

I want to create a folder on vista machine using vb.net or C#. and make it share. and one more task is make it full access control for network users.
can any one suggest how i do this.

Thanks

~Khatri Mitesh
khatrimitesh@hotmail.com
Bikaner (Rajasthan)
INDIA
http://www.youtube.com/watch?v=-oJaaPCrk3Q

Re: Folder permission on Vista machine

dan!sh 10-Nov-09 1:18

dan!sh

10-Nov-09 1:18

Look into DirectorySecurity class. That will help you. I guess it has a setaccesscontrol method which might be of your interest.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

How to use the control "PictureBox" for change pictures when it is running on WINCE5.0

lassic1239-Nov-09 20:06

lassic123

9-Nov-09 20:06

eg in msdn

Private Sub LoadNewPict()
   ' You should replace the bold image 
   ' in the sample below with an icon of your own choosing.
   PictureBox1.Image = Image.FromFile _
   (System.Environment.GetFolderPath _
   (System.Environment.SpecialFolder.Personal) _
   & "\Image.gif")
End Sub

but when i set up a smart machine project, "image.fromfile" is not supported Confused | :confused:

Is there any other method to do it?

thanks a lot~ Smile | :)

Re: How to use the control "PictureBox" for change pictures when it is running on WINCE5.0

Christian Graus9-Nov-09 21:11

Christian Graus

9-Nov-09 21:11

Image.FromFile is the only method I know of to load a bitmap from a file. Do you have the right dlls imported ? System.Drawing, I believe.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: How to use the control "PictureBox" for change pictures when it is running on WINCE5.0

Luc Pattyn10-Nov-09 1:43

Luc Pattyn

10-Nov-09 1:43

There are at least three ways of getting an image from a file:
- Image.FromFile()
- Image.FromStream()
- Bitmap(filename) constructor

AFAIK the third one exists on all platforms.

Smile | :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Count a String using an integer; delete a character and then restart the count from next character

Manik Nath9-Nov-09 19:57

Manik Nath

9-Nov-09 19:57

Hi All,

I am facing a weird kinda problem. Can't figure the solution. Here is the problem.

I have a string "FLAMES". This is a fixed string. I want to start counting the string characters till it reaches the value of an integer 'n' say the value of n = 7.

So what I is want is the code to start counting from F,L,A,M,E,S now at n = 6 the string finishes, so n = 7 will be "F". Now at the last count of n whatever alphabet is there it should get scrapped off. In this case "F" gets scrapped off. The reamining string is "LAMES".

Then restart the count from "L" till n = 7 and this time the alphabet that gets scrapped will be "A", the remaining string is "LMES"

Again restart the count from next character which in this case is "M".

Repeat this procedure untill there is only one alphabet remaining in "FLAMES". In this case of n = 7 it should be "E"

Can anybody help in this? I'm really stuck at this.

Thanks in advance for any help.

Manik

Re: Count a String using an integer; delete a character and then restart the count from next character

Christian Graus9-Nov-09 21:13

Christian Graus

9-Nov-09 21:13

Sounds like some incredibly simple homework to me. We're not going to do it for you, you have to try yourself. It's set so you can learn, not because the world needs this program to exist. So, what have you tried ? Think about the task, think about how to logically break down the steps you want to take. If you're stuck when you bothered to try yourself, you might post code here and ask a SPECIFIC question.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: Count a String using an integer; delete a character and then restart the count from next character

Steven J Jowett10-Nov-09 1:42

Steven J Jowett

10-Nov-09 1:42

Here is a tip...

SubString

Steve Jowett
-------------------------
Real programmers don't comment their code. If it was hard to write, it should be hard to read.

Re: Count a String using an integer; delete a character and then restart the count from next character

freakyit10-Nov-09 3:57

freakyit

10-Nov-09 3:57

and the Second tip is ...
.... using a loop Smile | :)

BUBBLE SORT

PAguilar099-Nov-09 16:21

PAguilar09

9-Nov-09 16:21

Hey guys okay so im trying to do a Bubble Sort dealing with an array of data that is being loaded at form load from a text file

But right now i keep getting an error everytime it is being executed. I keep getting this error: Index was outside the bounds
of the array!

But i cant see where I am gng wrong?

This is what i am trying to do: my array contains values like this: "C2 H2 SA D4 D2 DA SK S9 S4 HA HQ HK" IT CONTAINS 52 values
all together

Then this is what im trying to sort when the user clicks arrange button: "C2 D2 D4 H2 HQ HK HA S4 S9 SK SA"

PLEASE HELP!!!!!!!!!

 Private Sub btnArrange_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnArrange.Click
        '*************************************************
        'this sub will sort the players cards in increasing
        'order using a bubble sort

        Dim Last, i As Integer
        Dim temp As String
        Dim ExchangeMade As Boolean


        lblPlayer1.Text = ""
        lblPlayer2.Text = ""
        lblPlayer3.Text = ""
        lblPlayer4.Text = ""

        Last = ShuffleCards.cards2.Length - 1

        Do
            ExchangeMade = False

            For i = 0 To Last
                If ShuffleCards.cards2(i) > ShuffleCards.cards2(i + 1) Then

                   'exchange values
                    temp = ShuffleCards.cards2(i)
                    ShuffleCards.cards2(i) = ShuffleCards.cards2(i + 1) '*****THIS IS WHERE THE ERROR OCCURS******
                    ShuffleCards.cards2(i + 1) = temp
                    ExchangeMade = True

                End If
            Next i

            Last = Last - 1 'decrement length

        Loop Until (Not (ExchangeMade = True)) Or (Last = 0)

'DISPLAY SORTED DATA IN EACH LABEL

        For i = 0 To ShuffleCards.cards2.Length - 1

            lblPlayer1.Text += ShuffleCards.cards2(i)
            lblPlayer2.Text += ShuffleCards.cards2(i + 1)
            lblPlayer3.Text += ShuffleCards.cards2(i + 2)
            lblPlayer4.Text += ShuffleCards.cards2(i + 3)


        Next



    End Sub

Re: BUBBLE SORT

Christian Graus9-Nov-09 16:28

Christian Graus

9-Nov-09 16:28

PAguilar09 wrote:
If ShuffleCards.cards2(i) > ShuffleCards.cards2(i + 1) Then

If i counts up to the biggest possible value, when it gets there, is i+1 still inside the array, or not ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: BUBBLE SORT

PAguilar099-Nov-09 16:46

PAguilar09

9-Nov-09 16:46

well i set breakpoints and saw that as the loop runs my arraylength is 51 since the index value = 51 because there are 52 values total

During the loop i also saw that the values are not being sorted in ascending order it takes the first value in teh array
and tests to see if its in order if not then it should swap.

I am so lost at why this sort wont work??????

Re: BUBBLE SORT

Christian Graus9-Nov-09 17:18

Christian Graus

9-Nov-09 17:18

I'm not sure how I can make it clearer. Look at the error message again, then consider if you have 52 items, numbered 0 to 51, and your loop value is 51, and you look for the index at i+1, what will happen.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Re: BUBBLE SORT

_Damian S_9-Nov-09 17:22

_Damian S_

9-Nov-09 17:22

So if I am looking at item 51... (because it's a 0 based array, therefore 52 items are indexed 0 to 51), you are saying that if I attempt to look at item 51 + 1 = 52, this might be out of bounds on an array of items indexed 0 to 51?

Roll eyes | :rolleyes:

I don't have ADHD, I have ADOS... Attention Deficit oooh SHINY!!

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Re: BUBBLE SORT

Christian Graus9-Nov-09 17:24

Christian Graus

9-Nov-09 17:24

Wait - there's a thought !!!

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

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