Difference Between Me.Close And Me.Dispose?
Mar 20, 2011
whats the difference of Me.Close and Me.Dispose...What code does releases memory resources that was used by ".show" command?Im currently creating a program and i just used both of them... is that ok?if it is ok... i know some commands have issues on what should i type first.. so what will i type first?
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Apr 21, 2011
I used to always do the following:
con.close()
set con = nothing
Does con.Dispose() do both of the above 2 lines of code or do I do con.close() and then con.dispose()?
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Oct 21, 2010
Which different abount Form1.Close and Form1.Dispose?
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Mar 1, 2011
[Code]...
Here I am Clear the object using Dispose( Mycmd.Dispose()). Can I Use here Nothing ( Mycmd = Nothing?. Which is the Best ?
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May 12, 2009
I have created a CMS-system and I am using it on different homepages. To manage updates quick and easy I made a administration-system for uploading the updates on all homepages on the same time. As long as I only have to overwrite the old files everything is going fine, but there are some few files on every homepage containing some different constants.
For that purpose I made this code:
Open the new file to be copied from my default cms-system:
Dim fs as new FileStream("D:WEBLOCALUSERmysite.dkskabelondefault.aspx",FileMode.OpenOrCreate)
Dim objReader as new StreamReader(fs)
Dim strFile as string = objReader.ReadToEnd
objReader.close()
[Code] .....
Sometimes first file is updated successfully, but for the next file I got this error:'D:WEBLOCALUSERmysite.dkskabelonempdefault.aspx' because it is being used by another process. I tried to close and dispose everything possible, but still the file is in use for minutes.
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May 6, 2009
I am using VB.NET (Visual Studio 2008) and thus .Net framework 3.5. I have developed an application which has a MDI form and then has several other forms, most of which are shown using form.showdialog and some set of forms are shown using form.show.Whenenver a form (shown using form.showdialog) was closed (usually by clicking on a button (OK or Cancel)) I wrote code Me.dispose. After careful testing and R&D I figured this caused flickering on the screen. There use to be a flicker on the screen and it looked weird.In some rare circumstances if I clicked on button and form closed using me.dispose the focus of application was lost and some other program that was running came on focus. (This has happened but was rare.)Now the reason I used disposed was that after a form was shown using .showdialog I didnt want its contents to be in memory so I used the .dispose thing. But I noticed that If I use form.close then there is no flicker and form closes fine. But I think that would not dispose the form from the memory.
What should I do so that form closes and is disposes as well without any flicker.?I read on net that for forms shown using .show it gets disposed off automatically the moment it is closed (by using me.close) or user clicking on cross. Is this true? I also think that If I call a form using showdialog then I can write formx.dispose from where I am calling and not in the form itself.
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Mar 25, 2011
Is it always a good idea to use dispose prior to close? Or only under certain circumstances?
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Jun 2, 2010
In VB.NET when I am closing a form and no longer need to use it, do I do a me.Close() and me.Dispose()? Does the dispose erase the form from memory?
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May 6, 2009
I am using VB.NET (Visual Studio 2008) and thus .Net framework 3.5. I have developed an application which has a MDI form and then has several other forms, most of which are shown using form.showdialog and some set of forms are shown using form.show. Whenenver a form (shown using form.showdialog) was closed (usually by clicking on a button (OK or Cancel)) I wrote code Me.dispose. After careful testing and R&D I figured this caused flickering on the screen. There use to be a flicker on the screen and it looked weird.
[Code]....
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Oct 23, 2008
Is there a way to have a form within a program that doesn't dispose when you close it? I have a form in my project and a menu item to show it. When I declare the form globally and show in menuItem.click, then the click event breaks because the form no longer exists. When I declare the form within menuItem.click, then this creates a new form every time I click and that's not what I want.
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Aug 1, 2010
Just curious on what the difference is between the "Me.Close" and the "End" code for Visual Basic in terms of writing a Exit Button?
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Jun 25, 2012
I looked at the Dispose() method in System.Data.SqlClient.SqlTransaction (using a decompiler):
[Code]....
Why does everyone say in forums that it is Rolling back in the dispose? Where does it rollback?
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Jan 16, 2009
I'm currently in the process of building a text editor type program, and have run into a brick wall. I haven't done VB in years, so I may just need a little reminder on some things. I have coded everything so far as far as opening files, saving them, changing fonts, colors, etc. However, I'm looking to add a Close button to my menu strip that will just close the currently opened file, and not the entire program, while also ask the user if he/she would like to save before closing the file, and then if they select yes, it will show the save dialog, and if not, it will go ahead and close the currently opened item.
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Jan 17, 2009
I have set up a notify icon for my form. I want to make it so that when the user clicks the close button that it doesn't close the form it just takes it to shows the notify icon. They can exit the program from the notify icon. Can someone tell me how to keep it running?
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Nov 29, 2009
It seems like whenever i click my close button the application will close but the debugger is still in active.How to exit this debugger? :)
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Mar 4, 2011
In a program I'm working on, I want a "Loading..." dialog to close when it can't log in to a site using the username and password provided by the user. Basically, I have the code set up right because the function it is supposed to carry out when that occurs does work, but for some reason it ends up in some really weird stuff happening. In the Loading form, I have it set to do "Form1.Show()" and then "Me.Close()", assuming it would simply show the login form and then close the Loading form. However, when this happens, the Loading form closes, and then for only an instant Form1 shows, and then the Loading form shows and Form1 closes. This happens forever until I stop the debugging, and I can't seem to figure out why. Am I using the wrong method? What exactly does Me.Close() do anyways? All I want to do is close the form and open another
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May 12, 2010
I have two Close() functions in same class as below:
[Code]...
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Feb 12, 2011
sometimes, when I use Form.close() when debugging my program, although the form is closed, the application is still running. I noticed this behaviour when using the msgbox function.
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Aug 30, 2009
how to use windows calculator in vb.net 2008?
use System.Diagnostic.Process.Start(calc)
its working but i want when application close it also close this calculator how?
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Aug 30, 2009
my web browser is my main form and it has a number of sub forms , how can i set it that when i close the main form my sub forms dont close ?
At the moment when i close the main form all the forms close
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Mar 2, 2009
I have a situation where me.close() doesn't close the form. I have a form with a button with the code seen below. What happens when the button is clicked is the new form shows, but the original form(calling form) is still there. When I go into debug mode, I can see the me.close() execute, but nothing happens (calling form stays open). When I close the second form both forms close. If I comment out the call for the second form to open the first form closes without problem.
Private Sub cmdNext_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdNext.Click
Dim f As New frmOrder3
[Code].....
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Sep 27, 2009
Ho to use xxx.DISPOSE() under VB.net
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Oct 13, 2009
I have a program, and there is a timer to run it every 15 minutes. Every time it run, it will create a new exe / thread, (I monitor this thru an external software called TCPView). With the thread growing, it may slow down the performance, is there a way to dispose the thread before a new one is created?
Private Sub Processing()
Dim tmrThreadingTimer As Threading.Timer
Try
[code]....
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May 13, 2011
I am having fun working with System.Threading.Tasks. Many of the code samples I see, however, look something like so:
Dim lcTask = Task.Factory.StartNew(Sub() DoSomeWork())
Dim lcTaskLong = Task.Factory.StartNew(Sub() DoSomeWork(), TaskCreationOptions.LongRunning)
Task.WaitAll(lcTask, lcTaskLong)
That's the extent of the sample.Tasks implement IDisposable, so obviously I'm supposed to dispose of them, but what if I just want to "Fire and Forget"?If I don't dispose, will I leak threads/handles/memory/karma?Am I using tasks "wrong"? (Should just use a delegate and leave tasks alone?)
Can I dispose in a "ContinueWith()"? (That seems like playing Russian Roulette.)[URL]..
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Jan 28, 2009
When is it appropriate to apply the dispose method to controls?For example in a form that has five group boxes, once the first group box is used to gather user entries and is no longer needed, is it worth it to apply the dispose method to the first group box? Is it needed for local variables, for example a StringBuilder used within a private function which is only used while the function is executing?
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Sep 21, 2009
I attempting to dispose / close a startup form from a sub. Basically, I using the filesystemwatcher to watch for file creation, if the file is created, run some code and close the form.how to pass in some reference form. Using and new to vs2008. A bit of leap from VB 6.0.
Imports System.IO
Public watchfolder As System.IO.FileSystemWatcher
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code]....
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Dec 11, 2010
Hello, I have a WPF Window that I show with Window.Show(). When I click X the form closes. But it is still in memory and the GC never comes and cleans it up. Also I do not have any refrences/handles to it.
I am using the following code with the window:
Code:
Public Class PageWindow
Implements System.IDisposable
Public UserPressedExit As Boolean
[Code]....
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Jan 7, 2010
I was experimenting with ways to get rid of some memory leaks within my application the other day when I realized that I know virtually nothing about cleaning up my resources. I did some research, and hoped that just calling the .dispose() would solve all of my problems. We have a table in our database that contains about 65,000 records. Obviously when I fill my dataset from the dataadapter, the memory usage can get pretty high. When I called the dispose method on the dataset, I was surprised to find out that NONE of the memory got released.
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Jul 22, 2010
Out of pure curiosity, is there a way to free the memory used by a StringBuilder, other than the obvious MyBuilder = New StringBuilder and MyBuilder.Remove(0, Length) (although I guess the later wouldn't free anything, would it?)
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Jan 2, 2012
I create class as Person and include a public sub Insert_DB I write down this code in form
vb
Dim MyPerson As New Person MyPerson.Insert_DB(Me.TextBox1.Text, Me.TextBox2.Text, Me.TextBox3.Text)
I tried to set Dispose to MyPerson (MyPerson.Dispose)but didn't show me Dispose
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