I have a problem with my (aspx.vb, aspx) program. Since my vb program require more than a day to make some data analysis. however, the page always run a long period(one hours exactly) will be downed and become cant display the page. i am wondering is it related to dns error?
View 3 RepliesI wrote a program which loops through a very long CSV file (50 meg) and parses the data as it goes.Sometimes, the program aborts and I get the following message:The CLR has been unable to transition from COM context 0x37a090 to COM context 0x37a200 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
I know its going to take a while. There are several hundred thousand lines of text in the file that this program is reading. I am not sure exacly waht the message means, but my program seems to work fine other than the message. odd thing is sometimes the message doesnt always pop up..
The program has errorhandle and write log function, however, it could not catch the error message in the program.
The following error message in Event Viewer. Error Module: oleaut32.dll ,version 5.1.2600.5512, error code: 0x000048f9
I'm developing a chart that is frecuently updated.This chart works with a macro to display the period of time the user wish. The worksheet is protected because it can't be edit by the user. The user can just enter the dates between the period that he wants to be display by the chart. When I use the file on Excel 2003 its runs without any problem. But, when I use it on Excel 2006 or 2010 it gives me the following error:
Run-time error '-2147467259 (80004005)':Method 'MinimumScale' of object 'Axix' failed
I wrote a program to download and play AVI files the files are large in size and long time wise. I have the files playing as they are being downloaded but i can't see how long the file is or seek reliably. i was reading that the AVI headers are in the last 512kb of the AVI file *why would't they put it at the start* lol so my question is is there a way to download the last 512Kb of the file i'm downloading. i have the Bytes Read and Length of the file while its downlaoding i'm just not sure where to go from there, or how to do it atleast. If i had the length in time of the Avi file i could set the trackbar to be able to seek properly. or if someone has an idea how i could get the time of the video by using fps and some math i could prob do it that way too but idk how i would tell how i can find how many kb are in the fps i'm sure it changes so think that way is't going to be reliable. how to get the last 512kb would be the best option not sure if it can be done even.
View 4 RepliesI developped a small application with two date time pickers and a button user controls and it exports datatables to excel sheets. its working perfect on my pc using windows vista and office 07. but when i tested it on another machine using windows 2000 and office2000 i got the following error:
failed to activate control vb user controle. this control maybe incompatiblewith your application. make sure you are using the version of control that was provided with your application.
and for excel 2000. is it possible to get MIcrosoft Excel 9.0 object library downloaded and added as reference to vb
I'm going to design an Application (C# or VB.NET) which use .NET Framework to run for very long time. It may be restarted every year or even more...Is there anything (using special design patterns or so) which I must care about in designing "Long time running applications in .NET"?
View 3 RepliesI've been using things like FileOpen, and FilePut for a long time in VB.NET, and it's never presented any problems. However in my latest project I'm using CodeDom to compile at runtime, as you know FileOpen, and things like that are the old VB6 methods, such as MsgBox("Msg"), and these don't work. So I need to know how to do this using only the newer VB.NET code.
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I'm looking for the equivalent to a Java System.currentTimeMilli(), in VB.NET.What is the method to call? I know about Datetime.Now, but not about the actual conversion to long milliseconds.More details about my specific need: I need to manage a login expiration. So most likely when I log in, I will set a "expiration_time_milli", equal to the current time + the timeout value. Then later, if I want to check if my login is valid, I will check is "expiration_time_milli" is still superior to current time.
View 4 RepliesI've a solution with 15 projects (14 class libraries and one web application). Each class library has corresponding test project (i.e. if I have MyApp.Services project there exists MyApp.Services.Tests -- using NUnit). Everything is written in VB.NET. The problem is that when VS tries to compile any of *.Tests project it stops responding (the bigger the project the longer the period without reposnse). I don't know where to start looking for an issue. I'll add that I've R# 4.5 installed.
UPDATE 1:Is there any way to benchmark a build in visual studio? To get build times for every project?
UPDATE 2:It seems that there is no difference after disabling R#.
Occasionally, my website will stop functioning and anytime an ASP page is accessed, the browser will hang for many minutes before bringing up a correctly formatted HTML page with nothing in the tag. It seems to happen whenever more than one person attempts to access an ASP page, but I'm not positive it's isolated to those conditions.
Let me emphasize that the issue does not arise when accessing directories/HTML pages/other files. Only ASP pages are the problem. I am using lunarpages as a host.
Actually, I am trying to find out whether the partno is existing in the database table or not and it takes long time in count = checkCommand.ExecuteReader statement
Public Function CheckProductNo(ByVal Partno As String) As Boolean
Dim count As SqlDataReader
Dim valid As Boolean = False
Using connection As New SqlConnection
[code]....
I'm trying to time how long an operation takes in Visual Basic (VS 2008) but its not working. the code I have is as follows:
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this is in an OnClick event, so what happens is that the user can click a menu item, and it goes and sends any changes it has to a database, and pulls down any new changes to a local data cache. This operation takes time, depending on how many changes are on the server and how many are cached locally. I've thought about making this a background task, so it doesn't draw away from the main app while it's running, but before doing that, I'd like to get an idea how long the operation takes. Since I can't exactly do a progress bar, I figured using the stopwatch would tell me how many ticks/milliseconds would occur between click, and when the "total synced" message comes up, but every time i run it and do an update the message always shows 0 ticks/ms. I don't think it's accounting for the delay, just from start to finish. Is there any way to make it so it detects a message popping up and times off that?
I recently installed Visual Studio 2010 which caused the same error, every time i try to start the program i get this message. i am using windows 7 professional 64bit i only have one user account, and i am the computer administartor. every other program works fine but visual studio programs.
View 2 RepliesI need to find the best solution to count how long it takes to make a request to database like connect, do a select and receive the answer. And if that take more than 300 milliseconds I must cut the connection.
Public Function FindLastCt() As Decimal
FindLastCt= 0
Dim strrequete As String = "SELECT MAX(CM_Codigo) FROM CAJITAS WHERE CM_Date >= '" & Format(DateTime.Now, "dd/MM/yyyy") & " 00:00:00.000' AND CM_Date <=
'" & Format(DateTime.Now, "dd/MM/yyyy") & " 23:59:59.999'"
Using connection As DbConnection = factory.CreateConnection()
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I have a backend database in MS access, which is updated using excel as front end. Due to network issues the record updation takes lot of time. Would it be faster if i use VB.net as the front end.
View 1 RepliesI am on one asignment of convering C# to VB.net and stuck up with this problem.C# application has one class having inline two dimensional array initialized with size 168X168. I converted same class to Vb.net. Now whenever I create instance of my this VB.net class, It take almost 3 minute.
To figure out problem, I put break point on sub new() (first line of my constructor), and behaviour is realy strange because it takes 3 minutes to reach at first point of my constructor.Whenever I comment out my large size array initialization code, It works perfect. Now please note that same code is working fine in C#. It is not taking even few millisecond to initialize that class.
I'm trying to make a macro for a game, so I use long spells in a shorter amount of time. I'm having trouble with a lot of things. For starters I get the when I start the programs timer: "A call to PInvoke function". (I'm calling it a hack, but it's not a hack because it doesn't hook into memory addresses, only sends keys when the correct combo are pressed)
Option Strict On
Public Class Form1
Private Property hEnabled As Boolean
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Long) As IntegerPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If (hEnabled = False) Then
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I am using the below code to get the local Administrator members, but this code takes about 6-7 seconds to execute. More precisely the "GetObject" takes that long.Is there another way to get the same information but faster?Also, where can I find what other properties the objects holds ? (To see what other useful information I can get)[code]
View 1 RepliesWhenever I publish my app, or when I run the exe from teh debug folder it takes a couple of seconds before the splash screen shows.However, when I run it from within VB (by pressing the "play" button) the splash screen shows immediately.
What could be the cause of this?
I am writing an application for managing mp3 files. I use AXWindowsMediaPlayer1 for playing files and UltraID3 for reading and writing ID3 tags. Every time the user selects to switch to next song, the ID3 tags of the current file need to be updated. My problem is with Media Player taking a long time to release a file for access after doing a "close". Currently I need to add a 6 seconds delay between the "Close" method of the media player and the ID3 tag "Write", otherwise I get the error saying that the file is currently in use. Anything less than 6 seconds does not work...
I attached a short version of my application which focuses on the issue.
MVC3 vb.net. In my app I have a point where 500+ emails with attachments are sent out using a for each loop to accomplish this.. Nothing is returned to the browser the entire time this is running so eventually the browser think it has timed out... I tried just having it redirect to another actionresult function after every email and that function just passes it back to the email function. This is not working and I feel the reason is that nothing is actually being sent to the browser window its self.. Is there a way to fix this issue??
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i have developed an application using OPEN XML SDK Tool 2.0 which generates Excel file. I have Data table of 100000 row and 30 columns and i want to generate excel file with these 100000 rows and 30 columns but it takes about 2 minutes of time to generate excel file. What can i do to reduce this time.
View 3 RepliesI'm developing a utility that will look through Active Directory and find anyone that hasn't logged in 90, 120, 180, 365 days. Between what I know and researched on here I've pieced together code that works part of the time. When I LDAP a container with approx 2000 or less user objects it will work, but when I LDAP the entire directory it loops through approx 60,000 user objects.Part of the way through it returns the following warning:
ContextSwitchDeadlock was detected Message: The CLR has been unable to transition from COM context 0x4dbc88 to COM context 0x4dbdf8 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
When I tell it to continue it goes a little further before finally hitting a OutOfMemory Exception:
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In my vb code.
I am converting today date to long datatype.[code]...
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View 15 RepliesI would like to know if there is a way to see how long a program runs. I have one that takes a very long time to run, which is not the problem. I start it and go to bed or leave for the day. When I come back it has finished. I do know it takes hours. Is there a way to find out how long it does take to run give or take a couple of minutes?
View 3 RepliesHere is my code so far trying to sort the array. The only problem is with Option Strict On, it throws errors on sortedarray(i), and all of the j-1's, j's.Error is dissallows conversions from long to integer
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I intend to choose developing a Web Content Management System using asp.net with VB.net 2008 but I'm not sure about how long it takes to program such system. Is 4 months enough for developing such system? This 4 months is the duration of this semester and Includes about two months for analysis and design and the rest is left for implementation.
View 2 RepliesI have written a program that searches a bunch of urls and pulls out information that I need. The program works to an extent. Everything codewise works, but it seems like I did a sloppy job of pulling the code together. After about 10 minutes of running, the program just becomes unresponsive and I have to close it through task manager. I've seen it range from 100k to 350k in memory useage. It also uses about 80%+ cpu usage at all times. I hope someone might be able to see something that I forgot or did wrong as the program is meant to run almost full time, executing parts of code on certain days/times.
Dim con As New SqlClient.SqlConnection
Dim strCon As String = "Data Source=server;Initial Catalog=database;Integrated Security=True"
con.ConnectionString = strCon
[code]....