Load Everything In Memory Upon Application Start?
Oct 9, 2009
I'm using VB.Net, and I have a set of data which I have to able to filter through fairly quickly.Basically, the program is like google sugest, but instead of a drop-down menu, I'm using a listbox. When a user enters a word, I compare the word using LINQ and filter those that contain the user's input. The data are all strings of variable length (from 0 to 200 characters, most on 150 character mark), and I have 240,000+ of this strings and counting- all stored in an XML file.
A colleague of mine told me that loading all of that to memory (using VB.Net's XML serializer plus collections of string/objects) is not practical, and would slow the 'startup' time of the program. I haven't finished building the program yet and I'm having second thoughts about continuing this path.
So, my question is: Should I continue with my current approach on the problem (which is load everything to memory on startup), or is there a better way of solving my dilemma?
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Sep 7, 2009
How can i automatically start a vb.net application on windows startup or load?
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Feb 28, 2011
I have made my application to start automaticly when windows start (registry ../currentversion/run/appname + path). In this mode the application start minimized and an little icon appear in the notification icon area. With this icon you can maximize the app or exit it.If you exit the app and start it again using the Menu (Start/programs etc) than the application start in minimized mode (and in this case I would like to have it in normal mode) because the setting autostart is still true.Is there a way you can detect when the application start when windows startup using the above registry or when people click on an icon in the programs menu (or desktop)?
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Mar 27, 2009
My intentions are to add command line switching. I am trying to see if i could run my application in varoius ways i.e.
App.exe -S - Start the application in XX Mode
app.exe -T30 - Start application with 30 second delay
and that kinda switching.
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Feb 24, 2012
How can I get my application to load the Sub Main at the start rather than loading a form on start up.
I have tried declaring 'Public Sub Main' on my forms and in some modules, yet in my project properties, it is not one of the options.
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Jan 22, 2011
How would I start a program (from my.resources) from memory?
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Aug 4, 2009
I'm using Process.Start to start an external command line application and using the StartInfo.Arguments method to send parameters to the application. I imagine I'll need to use a loop... but I can't figure out exactly how yet.I need to send anywhere from 1 - an infinite number of files names to this application. Each file has to be sent one after the other. So once the first one is done, I need to loop back around and past the second one.I can probably use the Directory.GetFiles method to get all of the files, but I don't know how to assign them.
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Feb 24, 2012
Visual Basic 2010 - Net Framework 4.0 Client
I have an application (application #1) running with Administrator privileges on Windows 7.
I want application # 1 to start another application (application #2) without Administrator privileges so application #2 is running as a standard user.
Is there a way to do this? I have been using Process.Start.
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Apr 16, 2009
I want to load an xml file into my program then extract data from it into text boxes. For loading purpose I would like to be able to have something that looks like the open file dialog. So that I can select different xml file each time load it into my program have it take the layout i created. I would like be able to alter any text then save the alteration and print it out. I am using visaul studio express edition visual basic 2008.
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Jun 2, 2011
I have a filename(including it's path) in a string. Now i want to load this .csv file into memory stream. ex: Dim filename as string="C:UsersDesktopabc.csv"
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Feb 6, 2010
I'm newb in the .NET framework so how could I go about loading an array of images into memory?[code]...
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Jun 1, 2011
I am working on vb.net win form. My task is display the file names from a folder onto gridview control. when user clicks process button in my UI, all the file names present in gridview, the corresponding file has to be loaded onto memory stream buffer one after another and append the titles to the content of the file and save it in hard drive with _ed as a suffix to the file name.I am very basic programmer. I have done the following attempt and succeeded in displaying filenames onto gridview. But no idea of later part.
'Displaying files from a folder onto a gridview
Dim inqueuePath As String = "C:UsersDesktopINQUEUE"
Dim fileInfo() As String
[code]......
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Mar 31, 2011
I have some questions about bitmaps and such. I am using the IDXSurfaceFactory::LoadImage Method to load an image and now I want to access its memory buffer, so I can do some direct memory manipulation and copy the content to another buffer afterwards (no BitBlit!). I managed to successfully use LoadImage, but I have no idea how to retrieve the pointer to the memory buffer and other informations. I want to basically know everything about, how and where the image is stored in the memory buffer.
Does windows always load images as BGR regardless of its original format? if not, how can I find out if the loaded image is stored as BGR or RGB. How can I find out how many bits each color has? How can I find out if the image is stored y-reversed? And if you load an indexed png for example, with one color marked as transparent, how can I find out which color is used for transparency?
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Feb 8, 2010
i am trying to play a flash and cant seem to have it auto start. i am using the code below:[code].....
it finds and loads the .swf but will not start till i click on the box i want it to appear in.i want it to auto start when the main window begins.
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Dec 28, 2008
how to save user settings. i've been doing this by using a .txt file... now i want this .txt to load on the form startup so the settings will load automatic?
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Jun 7, 2010
Could anybody tell me which event is good to start the thread to load resultset?
Example :
Dim Table As DataTable
Sub LoadItem
Dim BL As New BLItem
BL.LoadResultSet()
[Code]...
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Jul 8, 2010
How can I make a timer start 30 seconds after form1.load
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Jul 2, 2009
Deploying Winforms Application to Client Machines Application Failing on start
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Oct 22, 2009
Im simply trying to load a file on my network. The file is a database file for access.. This code opens the file on my computer. However on the four computers tested 2 of them throw an error stating that the user canceled the operation. However the user didn't do anything. The error is thrown automatically. The other two are working perfectly fine.
[Code]...
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Nov 24, 2010
I have a startup form with one list view and one combo box. When combo box SelectedIndexChanged a make call a subroutine that perform read of a file. In Main_Form_Activated i give a default value in my Combo box. The problem is: The program didn't show me the main screen and after call the subroutine to load the file but without show me any screen starting to load the file and they show me the screen AFTER the load of the file.
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Jun 26, 2010
Im wanting to load a picture into a picturebox before i start with saving the image. but im stuck i cant figure out how to make the code wait.
cover.ImageLocation = file
cover.Image.Save(path.Text & "mymovies-front.jpg", System.Drawing.Imaging.ImageFormat.Jpeg)
When i use the code above and chack the picture after save it shows me the "x" picture just before the picture is loaded i have had a look at picture.waitonload
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Apr 22, 2008
I have seen a similar post under C++ but after reading that post and many others I have been unable to find a solution for VB VS2008.I have just ported one solution withseven projects from VS2005to VS2008. All seemed fine at compile time but when I attempted to step into the code in the debugger I received the following error:
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Oct 21, 2006
I am installing an app I built in VB, and am getting the error "Application validation did not succeed. Unable to continue." I have successfully built and installed this app previously. What I think caused the issue is I attached the .mdf file I have referenced in my application to my SQL Server. I then detached the database in SQL Server, opened my VB app and re-built the app. When I tried to install the app, I received the error. Attached are the details of the error message.
[Code]......
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Feb 27, 2010
I'm using Process.Start method to launch another application from my application. Until today, there was no problem. But I have tested my application in a different OS, Windows XP (SP3), and my application didn't work right on that. I'm also using arguments to run that application. I guess for some reason my application couldn't send arguments to other application correctly under Windows XP. Maybe it is related to my code. But you should know, it works great on Windows 7.
[Code]...
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Oct 12, 2011
how to extract all the content from Twitter more data only start to load after scrolling down to a certain depth.
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Jul 15, 2010
I have one doubt. I told yesterday that i am new for windows application. I am using web application. In our web application, we can use multiple files and what files we want to run that we give page start up options. But in windows application where is it? I am using two files in single application. I want to change default start up page.
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Jun 22, 2012
How do I find the memory or CPU used by my software?
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Oct 19, 2011
I am working on a desktop application in VB.net 2005. The application contains a timer with an interval of 1 min. Each time the timer ticks, a set of functions gets executed, mostly database related.Initially the application runs fine. In processes(Task manager) the cpu usage goes to 100% every time the timer is invoked. But the timespan is around 1 sec(negligible).However as the time passes and after around 20 hours the time span of timer_tick increases to something like 20-30 secs. In this period cpu usage is 100% and the application does not responds. Gradually the time span of timer_tick increases to 1 min and the cpu uses gets stuck to 100% and the application does not responds.All objects are properly disposed. Moreover, this issue is with pentium 4 processors. The application runs fine on core 2 duo.[code]Many Select, Update and delete queries are performed in the timer.This problem occurs when I am using around 7000 records in database.
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Oct 19, 2011
I am working on a desktop application in VB.net 2005. The application contains a timer with an interval of 1 min. Each time the timer ticks, a set of functions gets executed, mostly database related.Initially the application runs fine. In processes(Task manager) the cpu usage goes to 100% every time the timer is invoked. But the timespan is around 1 sec(negligible).
However as the time passes and after around 20 hours the time span of timer_tick increases to something like 20-30 secs. In this period cpu usage is 100% and the application does not responds. Gradually the time span of timer_tick increases to 1 min and the cpu uses gets stuck to 100% and the application does not responds.All objects are properly disposed.Moreover, this issue is with pentium 4 processors. The application runs fine on core 2 duo.
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Jan 26, 2012
A couple of months ago, before I started learning C++, I made an application in VB.net that reads memory from an external program. This could be anything, from notepad to windows media player etc. I have been trying to find a way to do the exact same thing in C++, but to my suprise I can't find anything straightforward on the subject. All google comes up with is threads on several forums, where the general response is "Windows doesn't allow you to read from memory you do not own". But if it works in VB.net, it can work in C++ too.
[Code]...
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