Outofmemory Exception With FILL?
Apr 9, 2011
I am reading an XLSX that is about 100MB in size using the following (on XP 32bit):
connS = "Provider=Microsoft.ACE.OLEDB.12.0;"
connS &= "Data Source=inwaredata" & frmConversion.DBCompany & "" & in_file & ";"
connS &= "Extended Properties=""Excel 12.0 Xml;HDR=No;"""
[code]....
On the FILL command the memory in the task manager gets up to about 1.3GB and then gets an outofmemory exception. Is there a way i can specify this is read-only and read-forward since i am just reading through the XLSX and not moving backwards/forwards or doing any updates? Or, is there a better way to read the XLSX so i don't have to do a file.I do not want to use the excel add-on - i just want to read straight through the XLSX file, massage the data i read and then write it to an SQL database.
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Sep 1, 2011
I'm working on a VB.Net WinForms app. This app shows rows of production lines that the user will go down row by row and print a package of ActiveReports documents. This package can contain up to 9 reports. The package is selected and told to print, it then gets sent directly to the default printer of the machine using ActiveReports' mechanism:
rpt.Document.Print(False, False, True)
These reports also use images pulled in from the file system. When they run through the rows quickly, they sometimes encounter:
A generic error ocurred in GDI+
Then followed by:
Exception of type "System.OutOfMemoryException" was thrown.
This causes some documents to not print and they have to go back and figure out which ones didn't print. I know the machine is not out of memory, so my assumption is that the printer memory is filling up or reports are trying to use the same image when printing and causing an issue there.If it is the printer memory filling up, is there any way to slow down the adding of documents to the print queue, or at least pausing to wait for space?
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Jan 14, 2011
One of my VB programs has to deal with loads of data. I keep getting OutOfMemory exception while running it.I monitored the memory usage from task manager Private=495M and CommitSize=521M.
1) What is the max memory I can have per process?
2) How do I allow more memory for my this program?
I am using Windows 2008 Standard 32 bit and .NET Framework is 3.5
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May 26, 2011
I have to draw something on a Image wich is captured by the Camera. This works on many Devices, but sometimes the RAM is too small or the pictures too big and the function crashed with a OutOfMemory Exception.How am I able to:a) optimize the code to prevent this Exceptionsb) Handle this Exceptions (making pictures smaller, free Ram etc.here is the code:
Dim from_bmp As Bitmap
Dim bmp As Bitmap
from_bmp = New Bitmap(picname)
[code].....
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Mar 5, 2010
I have a ASP.net 3.5 web application developed in VB.net I am using iTextsharp component to generate PDF document from the ASP.net page.
I am retreving the PDF documents stored in the db and merging them into one PDF. using the memorystream.
But when I try to merge around 1000 pdfs with each containing 2 pages, I am getting Outofmemory exception.
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Apr 19, 2010
I have a master page than contains my ScriptManager. On a child page i have an updated panel. Inside the update panel there is a dropdowlist. When i set the autopostback=true i get OutofMemory Exceptions. All the time. also note that I have AjaxControlToolkit set on my web.config.
Here is parts of my Code.
MasterPage.aspx
<ajax:ToolkitScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" ></ajax:ToolkitScriptManager>
Child Page
[Code]....
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Jun 5, 2011
I'm trying to create a Server/Client Sync scenario for my application using Sync Services for ADO.NET specifically the LocalCache custom tool which sets the whole thing up for me.My server DB has 5 Tables, all of which are being synchronized to the client application, which now has a SQL Server Compact DB with the same schema as the server DB. I have a dataset with some custom queries that I use to connect my app with the local database.So far so good.However in my application when I try to fill one of my tables with the table adapter on my form (the default "fill" method) it gives me the following exception:No mapping exists from DbType Object to a known SqlDbType.
However, if I continue and do the fill again, IT WORKS without a problem.
Try
Me.WTSUsersTableAdapter.Fill(Me.WTSMainDataSet.WTSUsers)
[code]......
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Jan 3, 2011
I got a function that reads memory of another process and then uses it in different ways. To prevent the GUI from lagging, I start a new thread and executes the code in it. It runs fine, but after a while, aprox. 20 minutes, the applications stops to work and an OutOfMemory exception pops up. The thing is that the memory use of the application isn't higher that 10mb and I can't notice any high increaments either. I have tried everything to find out what is wrong, but it seems to be impossible.
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Oct 22, 2010
[Code]...
(Attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang .) in this code. Could anybody tell me, why I have System.outofmemory exception when i release arrays? There is no exception while large arrays exist so why after their realesing??
[Code]...
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May 8, 2009
It is possible to catch an exception and throw a new exception which wraps the first exception as an inner exception: [URL] Also, if I call a function and it throws a certain error, but I catch it, will the calling code's catch handler execute? If so, and it is of a higher exception type, is this not wrapping the exception? eg I can throw exception ex of type IndexOutOfRange, log it but rethrow, catch a higher up exception and do something, or I can throw a new exception and wrap an inner exception like:
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Sep 23, 2009
I just want to display data of a single column from an oracle table into a datagridview or a listbox for readonly with no requirements to make changes to it. Simply display the information.What is the best way forward... To used DATAADAPTER or DATAREADER.s DATAGRIDVIEW SLOWER TO FILL THAN a LISTBOX.i am using the following code to fill datatgridview but for some odd reasons at time it is slow to display the data. I want to use listbox instead
Dim ds As New DataSet
Dim adp As OracleDataAdapter
adp = New OracleDataAdapter("select customer_name from customers")
[code].....
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Sep 2, 2009
I have a large project where we have 2-3 dll projects that are converted from VB6 to VB.NET. We have fixed all the issues that caused compilation errors, and most of obvious issues in running, so now we have basically a program up and running. The exe is created from scratch in VB.NET, using a lot of functionality from the converted dll's (including GUI forms). What I wonder is when I run the program in debug mode, I get a bunch of warnings in the "Immediate Window" saying:
A first chance exception of type 'System.Exception' occurred in Microsoft.VisualBasic.dll
...and some of other type (but most of them in Microsoft.VisualBasic.dll).I was wondering if this is common in projects converted from VB6, or if it is caused by bad design in our code...
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Jul 2, 2010
When I try to create a instance of a COM class it throws an exception as Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
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Sep 30, 2009
When I try to create a instance of a COM class it throws an exception as Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
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Apr 14, 2011
I'm trying to catch a user defined permission exception - i.e. a user does something their level of system access won't allow, permission exception is thrown. My problem is, the exception is caught and then rethrown as a genertic System.Exception.Is there any way I can deduce the original exception type, without resorting to string comparisons, like if ex.ToString.Contains("Permission denied"
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Jan 11, 2010
When catching an exception in .net, you can have as many type-specific exception blocks as needed. But I usually try to have at least one "general" exception catch block. But is there a way to get the type of the "real" exception thrown that is caught by the generic exception handler, perhaps using reflection?For example, if I have
Catch ex As System.ServiceModel.FaultException(Of InvalidUser)
ProcessModuleLoadException(Me, ex)
Catch ex As System.ServiceModel.FaultException(Of SQLExceptions)
[code].....
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Jun 19, 2012
i have about 20 possible exception messages that i want thrown when an error occurs.i need somthng like this when catching the exception
Try
' do domthing
Catch ex As CustomInvalidArgumentException
'do domthing
[code]....
do i have to create a class that inherits from Exception for each type of exception?
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Jul 28, 2011
I have the following code :
Imports System.Data.OleDb
Private Sub getData()
Dim connStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:
[Code].....
Exception Text : Can-not find installable ISAM.
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Dec 26, 2009
Is there anyway to create a Custom Exception without inheriting System.Exception?
my reason is that they have a lot of methods which i do not wish my Class to have.
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Feb 10, 2010
I have written a program which uses a SQL exception class and then use it show custom messages for the primary key violation. Also i want the primary key value that caused the violation. How can i get all the primary keys which generated the exception from the sqlexception object.[code]
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Nov 27, 2009
I am getting below exception when i am going to enter record in a table through StoredProceduer of sqlserver i have a field which i need u update immediately after insert of new record in table. for that i created a sotredprocedure in which i wrote insert command first and after that i wrote a update command for same recored but it gave me below error SQlException: Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 1, current count = 2. Uncommittable transaction is detected at the end of the batch. The transaction is rolled back. Some Error in stored procedure execution
[Code]...
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Aug 14, 2009
I am trying to make a database, fill it with tables and then fill the tables. I am having problems connecting to the server and am really not sure why. I have posted this thread in two areas of this site because I was not sure what was the best area to put it in. [code]
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Feb 12, 2010
I am using VB.NET 2005 to create a Windows forms application. I have a procedure named SendMail that creates an instance of Outlook.Application, to send an email from my application. I found the code on this forum, I think.The procedure works fine, but I can't use error handling with it.I call the procedure from a button click event. I put the procedure call in a try/catch block, and the application won't build, with the following error.
Error 68 'Catch' cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. C:datadevdmtiQTSQTSv7_1_20100212wQTSQTSReportsCriteria
pt_frmReportViewer.vb 43 21 QTS
Here is the code:
Sub SendMail(ByVal sFile As String)
' Create an Outlook application.
Dim oApp As Outlook._Application
[code]....
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Feb 14, 2011
catch an exception and then throw another exception? Like so:
Try
' Do operation xxx
Catch ex As Exception
' Operation xxx failed, need to execute cleanup
[code]....
The reason for doing this is that while I catch my exception on a higher level logic (to make sure I can log it properly), I need to do some actions in the event of the exception that I can only do inside my class/function.
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Jun 23, 2010
Using MS Visual Studio 2010 Express, when trying to debug, the build finishes and the following error below appears. It doesn't seem to effect the running of the program.
The error is:
An exception was encountered while constructing the content of this frame. This information is also logged by running the application with the /log parameter on the command line, which stores results in "C:Documents and SettingsCorkyApplication
DataMicrosoftVBExpress10.0ActivityLog.xml".
Exception details:
System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))[code].....
I can't find the "ActivityLog.xml" file the message references.
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Apr 18, 2012
I was scripting a very basic process manager, with a ListView component, and it was working fine for many days, up until now.Here is the code for getting processes:
Dim Process As New Process()
Dim Count As Integer = 0
ListView1.Items.Clear()[code].....
The line of code where I put "*WIN32 EXCEPTION LINE* keeps running into an error(Win32 Exception was unhandled; Access is denied). Here is the full error description:
System.ComponentModel.Win32Exception was unhandled
ErrorCode=-2147467259
Message=Access is denied[code]....
As I said before, this had been working for several days, up until now.
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Jan 21, 2011
When an error is occured at a try-catch block the Expeption helper assistant is thrown and at the window that is shown the "copy exception detail to clipboard" is an option which you can click and save all the details to the clipboard. How can I get all these error info with code to a "log file" at runtime?
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Apr 5, 2012
Background : I have built a VB .NET application on the 4.0 Framework, part of the primary functionality is the built in AxWMPLib.AxWindowsMediaPlayer which allows us to pass a file path as a URL to the player and then play it through the built in media player. My Development Platform is VS 2010 Pro on Windows 7.
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Aug 10, 2010
I'm getting 'Catch' cannot catch type 'Object' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. and 'Expression detected' Code underlined in blue: Catch obj1 As Object When (?)
Private Sub OpenJAMem()
Dim num3 As Integer
Try
[code]....
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Apr 16, 2012
I have a project converted from Visual Studio 2005 to Visual Studio 2010. It compiles and runs.
When I prune "unused references's from this project as listed by Visual Studio, the project fails to compile with the subject error message.
In particular one of the "unused refererences" is to "Microsoft.VisualBasic.dll". The IDE does not allow me to add back this particular reference.
What do I need to add back as a referenceto get this items?
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