App Doesnt Remove From Memory When Closed?
Mar 9, 2010
on my program that im making when closing the app by on my app it is file then exit and it executes Application.Exit()
which works fine but if i exit the program by the x mark in the top right corner it closes the app but the apps name is still in task manager and if i re run it there is 2 instances of my app running so basically it closes the app but it leaves in in the memory i believe can anyone explain why this is happening and a solution because it makes no sense to me because that it part of windows itself not my programming so i don't understand it at all.
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Oct 4, 2011
When a sub runs, it is using up large chunks of memory on every pass. It is loading pics into a listview. The pics are 1 to 2mb each and it is consuming 30-60mb for each one. How to release the memory once I close the form. Is there anything I can do to reduce it?
Private Sub PhotoFrm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
For Each ImageStr As String In Images
Dim Extension As String = IO.Path.GetExtension(ImageStr)
Dim fs As New IO.FileStream(ImageStr, IO.FileMode.Open)
Dim br As New IO.BinaryReader(fs)
[Code] .....
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Apr 25, 2011
I'm trying to create a program, that upon opening, will read an input file containing a delimited employee record. The record will contain the name of the employee, their salary and the number of years they have been employed.I'm looking to display only the name of the employees in sorted order(alphabetically) and then when the user of the program selects a particular employee, I want to display the salary and number of years for that employee.I would like the user to be able to edit the recors for the employee and I would also like to have a way for the user to be able to add/remove an employee record and update the input file before the program is closed.
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May 31, 2011
for example i have this code :
Sub Month()
Dim Conn As New Data.OracleClient.OracleConnection
Conn.Open()
Try
Dim Cmd As New Data.OracleClient.OracleCommand
With Cmd
[Code]...
What will happen to the datareader when the Connection is closed ( Conn.close)
Will the Cursor that is used by the datareader be freed ? or will it stay open ?
If the cursor that is used by the datareader is still open , when will it be automatically closed ? or should i just closed it manually ?
Will it cause the dreaded "ORA-01000: maximum open cursors exceeded" ?
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Nov 5, 2009
In VB 2005, I am calling a C++ DLL function that returns the address in memory and size in bytes of a jpeg image. How can I load that jpeg image directly from memory into a picture box in my VB form? I cannot afford to save it to disk first.
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May 22, 2007
Im getting a problem with one of my programs I have made in visual basic.NET where it gives me a memory error when i debug the program in the IDE. the exact error is this: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt". My program basically has a few forms with text fields on that get their text values from an access database on the same hard drive. Im wondering if im doing something wrong because my program just seems to eat up memory whenever it does anything. For example I have one form that has a combobox on it and when you change the drop down list selection it retreives a few strings from the database and puts them into the relevant text boxes, if you keep changing the selection then the memory usage (in task manager) just keeps going up and up. occasionally I get the error mentioned above when debugging but in my built version of the program it throws an exception everytime the memory usage gets past 49K.
Also I noticed when debugging in the "immediate window" frame I get the following message often:A first chance exception of type 'System. Invalid OperationException' occurred in System.Data.dll...Do I need to somehow be "releasing" the memory that is used to gather data once it becomes redundant?
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Nov 24, 2011
I am using the following code
This error occurs :
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Public Class FormRegEnumValue
[CODE]......................
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Feb 1, 2009
QuoteSystem.AccessViolationException was unhandled Message="Attempted to read or write protected memory. This is often an indication that other memory is corrupt." Source="System.Windows.Forms"
Im designing a web browser and i continue to receive this error after going to about 3 websites it crashes with that error.
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Jan 20, 2010
I have a BackgroundWorker object that I instantiated to perform a DB process on a background thread ansynchronously. I have event handlers for DoWork and RunWorkerCompleted. I can tell that the BackgroundWorker is disposing of itself because I added a message box into the Disposed event handler.Is it necessary to detach the event handlers to ensure that the memory is cleaned up and that there are not memory leaks?
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Apr 17, 2011
I've noticed that every time I start a new thread in my program, the memory usage jumps about 1000k and it never goes back down. I have ensured that the thread is no longer running, and only one instance of my worker thread is ever running at a time. I am using ThreadPool.QueueUserWorkItem and ASyncOperation to get stuff done. The program starts using a Sub Main in a module that uses STAThread; I read that using STAThread instead of MTAThread makes it impossible for the Garbage Collector to get in and consider objects for garbage collection. However, when I change the STAThread to an MTAThread, the WebBrowser control in my frmMain cannot be instantiated.
I get this exception:
Code: An unhandled exception of type 'System.Threading.ThreadStateException' occurred in System.Windows.Forms.dll
Additional information: ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment. I do threading with the WebBrowser control, so will using MTAThread fix my problem? If so, how should I partition my code so that the WebBrowser control won't be affected by the above exception? I call the thread repeatedly with a timer (although only one instance ever runs at a time), and my program's memory usage starts at about 5000k and can jump to 300,000k+ depending on many times the thread needs to be called.
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May 27, 2009
I cannot use Visual Basic 2008 at all. When I go to "new project" and choose "Windows Form Application" I get this error.I have tried multiple uninstall/reinstall with no result.A microsoft reply to this suggested that I needed: " .NET Framework 2.0 Service Pack 1 " I checked, and I did not have the .netframework 2.0 service Pack 1.
When I tried to download and install the above from Microsoft.com, the istaller said that "it was not allowsed" and I was not able to install the service pack 1.
I tried Uninstalling net framework 3.5, 3.0, 2.0 and then reinstalling .netframework 2.0 sevice pack 1; then reinstalling Visual basic 2008 express edition. At the reinstall of Visual basic 2008, .netframework 2.0 sevice pack 1 is unistalled by .net framework service pack 2.When I check the foruims for simiar problems, the formus are mostly for Visual basic 5.0, or other programs that I do not have.
Here is the programs I have installed:
Operating system: Windows XP
Microsoft .net framework 1.1
Microsoft .NET framwork 1.1 Hotfix(KB928366)
Microsoft .Net Framework 2.0 Service Pack 2
[code]....
All the security updates and hotfixes for Widows XP.
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Jan 11, 2012
The follow code can be called about 6K times on the server it is run on then gets a out of memory error in the last catch statement. I don't see what is wrong with the code, it works well up until the out of memory..
Public Function AddUserToGroup(ByVal sSamAccountName As String, ByVal sGroupName As String) As Boolean
Try
Dim returnStatus As Boolean = True[code]......
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Feb 9, 2011
I have two forms, Form1 and Form2. Form2 has a button to show OpenFileDialog. I call Form2 from Form1 by a button. My startUp Form is Form1. When i start debugging, i press my Form1's button to show my Form2, it shows, but when i click On Form2's Button to show OpenFileDialog it is giving me exception that
"Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
When i set my startup Form to Form2 and click Form2's Button to show OpenFileDialog then it shows!
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Jul 20, 2011
I have used if commands a lot over the years, and one thing i have noticed is that unless you get the logic right, thiings can slip through the net. I think i am having that problem here:
For mm = 0 To 1 'ds.Tables("AddressBook").Columns.Count - 1
If Night = DataGridView1.Columns(mm).HeaderText Then
If DataGridView1.Rows(0).Cells(mm).Value < 1 Then
[code].....
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Aug 3, 2010
I have a new problem with this same Form Printing project and I get exactly the same exception but from the different point of code:
line 538: d.PrintFunction(c, typePrint, mp, x, y, extendedHeight, ScanForChildControls)
The exception type is System.AccessViolationException and it says (after I translate it from my own language in which the message is given in my pc, into English):"Protected memory was tried to be read or written. This often indicates that the other memory is damaged"
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Feb 26, 2011
I have a combo box with "Existing Customers" Full Names in it.This combo box gets updated when a "New Customer" entry has been entered in a different form.When the new customer entry has been saved, the user is directed back to the combo box, here the user should be able to pick the new entry at the end of the combo box.This is not working currently, and the combo box only gets updated when I press stop, and play the program again. I was thinking that I possibly was not closing and loading the forms corretly for the "new customer name" to be added to the combo box? [code]is it possible to sort the combo box alphabettically? I tried setting the "sorted" propety to True, but it gives this msg box "ComboBox that has a DataSource set cannot be sorted. Sort the data using the underlying data model."
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Jan 15, 2012
Im using ms-acess 2007 as database and this issue is ridiculous.i run the FORM and enter some details ! and now i click display and display the data that was entered! this thing happens while im DEBUGGING sometimes when i stop debugging and debug again the data that was stored previously its not even getting displayed!! and its not even present in the actual database ! this doesn't happen every time!! this is weird and i dont understand , whats causing this issue?
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Dec 2, 2010
well i have been looking all over the internet for hours and i just cant sseem to find a working line of code. ok i know this isnt efficent or anything but i just wana know how to use sendkeys to send control c (copy to clipboard) ive tried using this: Sendkeys.send("^C") and many varriations of that but none of them seem to work and i dont understan why. My program is highlighting some text then i want it to copy that to clipboard.
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Nov 11, 2009
MsgBox(Session("fllog_ref"))
Dim query As String = "SELECT customer_name FROM tblFixedLine_order_summary WHERE fllog_ref=@fllog_ref"
[code]....
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Aug 4, 2010
I am getting the following error: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt". i am using interop service.
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Aug 15, 2009
My.Computer.FileSystem.WriteAllText("my.resources.highscore", TextBox2.Text, True)Im trying to use the resources as the directory but it doesnt work
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Jan 23, 2012
Possible Duplicate: How to use SubReport in XtraReport? I'm having a problem with my XtraReport it doesnt display the Sub Report but it Displays the main Report
[Code]...
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Nov 23, 2009
I am adding values and descriptions manually to a list box.I have a class for the items [code] and in a form the most basic example click a button to add a value and some text and then show a messagebox to get the value [code]however ListBox1.SelectedValue is always blank , however no error is thrown when adding the values.I have gone right back to basics with this example , but just cannot get a value added in manually and stored in the listbox.value property.
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Jan 30, 2012
I created an ASP Table Control and added a row to it programatically. I then repeated the process to add another row. The first row that I added disappeared and only the newest row is being displayed. Is there a property that needs to be set to allow the state of the table to be saved?EDIT:All I do is click a button on the page and it adds a row to the table. Repeated clicks of the button only add one from to the table., here is the function that adds the rows.
Protected Sub addItemButton(sender As Object, e As EventArgs)
'get the id of the item they selected
Dim id As String = CType(sender, Button).Text
[code]....
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Jun 22, 2012
Ive created a program for work which is very plain and simple, a problem i have been having with it is that the OK button. the OK button deletes a key from registry and copies a pdf to the desktop and also creates a .txt file in a folder and as well closes the program. This seems to work on the machine that i have created it on and also from a Flash drive but when i have the folder and program on another PC every button works apart from the OK button.
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Jan 21, 2011
durl is the download url nicely tested and gives right urlthe download path is also ok as i tested smaller files they work...
VB.net
My.Computer.Network.DownloadFile(durl, Application.StartupPath & "games" & info1 & "game.zip", "", "", True, 10000, True)
[code].....
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Apr 11, 2012
I'm not quite sure why, but this program doesnt work as intended. It's kind of difficult to explain but if you tried it, it doesn't work properly.
Private Sub btnApply_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnApply.Click
'clears the changes box before going through if statements
Me.txtChange.Text = ""
[CODE]...
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Jul 28, 2011
The following lines are supposed to display to a text box the phones numbers that match the condition in the sql statement, however it shows me all the phone numbers:[code]
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Mar 17, 2010
i have a problem, from some reason i'm getting an error when "i" and "i+6" value within the str i = 1 To str.Length If i Mod 79 = 0 Then Dim c As Integer = str.Substring(i, i + 6) If c = "" Then str = str.Insert(i, "b") End If End If Next i
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Apr 10, 2011
I tested every example I found but it doens't work in vb 2010 express... Do I need to install anything moor to make it work?
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