VS 2008 Which Method Would Be Faster For Gathering And Storing Data
Nov 16, 2009
I have a simple multithread application that stores updated data from a list of websites. After each thread gathers data, it then store the data into the same text file. I am now thinking of having each thread store the data directly into a arrayList, and after a certain amount of time past, store from the arrayList to the text file. Which situation would enable the application to complete its task faster?
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Apr 23, 2009
I basically need to hold a lot of data - the structure is that of a five dimensional array holding integers.What would be the most efficient way of storing this in a file (I was thinking of XML - your opinion?) that would also be quick to extract.
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Apr 28, 2010
I have written a program that will gather data from several different COM ports and reformat the data before sending it to a web site. This program is intended to run 24/7, but only send the information at user specified intervals. I have the routines to gahter data, but I only need it to perform this task at the specified time (5 minutes to each hour). At startup the dialog minimizes to the system tray. I would like a balloon message notifiy anyone watching that the data is about to be sent, and allow them to add additional comments if they choose (by clicking on the balloon). The system tray icon has several context menu items that the user may need. Is this the proper use of a background thread? I would also like opinions on the best method for pausing execution until the specified time.
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Jan 30, 2009
The code below randomly selects two players from "Preferences.txt" which has the names of all current players. (not necessarily all saved profiles) Now I need to find the best way to match 'Doer' and 'Receiver' with their profiles in "Players.txt" and get their profile attributes.
[Code]...
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Sep 14, 2010
in my project I insert values into a database, each value needs to be unique, currently I am using the following code to check for the value in the database before inserting, if it exists I loop back and generate another value and check again..
Dim SerialCount As Integer
SerialCount = 0
Dim con As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersMatt-ASUSDocuments im_db.accdb;Persist Security Info=False")
[code]....
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Mar 2, 2010
I want to gather some data from some tables of an Access Database, I've found some solutions online, but I haven't found ways to fill a datatable, or dataset, and get each single field properly. Is it easier for me to get whole tables then get just the info that i want, or should I make a lot of searches in the access DB getting just what I want each time? Any code snippets for it? The Access Database is in an ACCDB file, with no user or password. I'm currently using VB.NET, but it doesn't matter if you answer in C#. [URL]
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Dec 1, 2010
I have a listbox control that has a selection mode "MultiSimple" (I've also tried MultiExtended). I also have a button that uses this code to select all the items in the list:
Dim i As Integer
For i = 0 To ListBox1.Items.Count - 1
ListBox1.SetSelected(i, True)
Next i
It works ok but the problem is that it's very slow. I have cases where there are 60 000 items in the listbox, and it takes forever to select them all. Is there any function that would select all at once (Just like ListBox1.ClearSelected() unselects all instantly)?
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Mar 10, 2011
I am working on process for validating documents to make sure that they meet corporate standards. One of the steps is to make sure that the Word document does not use non-approved fonts.I have the following stub of code, which works:
Dim wordApplication As Word.ApplicationClass = New Word.ApplicationClass()
Dim wordDocument As Word.Document = Nothing
Dim fontList As New List(Of String)()
[code]....
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Jan 12, 2012
is there any way to keep data stored in an application retrieved from web references like we get data [items] invoked in a listbox from web references and then after publishing it when once exe. is run the data is invoked or retrieved from web references. so that when next time once again exe. is run the retrieved data will be there instead of waiting services to get data.
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Oct 20, 2009
I have the book "Visual Basic 2008 Step by Step", I am in the final chapters and have completed all of the walk through and demo programs thus far. I am a beginner but I also have a basic understanding of quite a few program statements and objects. My Goal: For the sake of simplicity I will use an example. I have a Tetris game, the player loses in the first level earns 25 points they click the save score button. , they play again tomorrow and do 1,000 levels and earn 25,000, now their score is 25,025.
Then they play my blackjack game, they gain 25,025 points when they start automatically from their Tetris game, they earn 25 points in blackjack click a save score button, now they have 25,050. [Thus far I have 2 games, and they both share a score that will need to be added to in the future]
[Code]...
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Dec 11, 2010
I am making a small tool that require some calculation. I am using hashtable to store values that I need to calculate. This tool continuously extract data on specific time interval(30 seconds) from webpage and add those data into the hashtable. Now the problem is I need to store the previous extraction data and when new extraction occurs, I need to deduct the previous data from new data.Here is the process I am currently following:
HTML
Dim MyTable as New Hashtable
MyTable.Add("Data1","200")
MyTable.Add("Data2","100")
[code]....
On first run it shows the result of Data3 = 100 which is currect. But on second run I need to redefine the value of Data2 = Data1 . So I need a result of Data3 = 0 on second run. This may not be the proper way to do this sort of operation. I have also tried using listbox, listview and even textfile to store the Data2 and recall that on second run.
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Nov 5, 2009
My application check a valid license key using Select...Case,for each user I have a Case statement.This way I can easily remove a user from next versions of my app.If I use a external data file, my app can be easily hacked,exe can be replaced etc,but using all inside exe seems to be more secure,but Select...Case statement will grow so I'm looking for a way to store white list - keys inside my exe.
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Mar 16, 2010
I'm trying to add functionality to my application to let user define "custom actions" in one of the context menus.Essentially, these would be command lines that can be executed against remote machines.I've got the code to add the menu items working but I'm not sure of the best of storing the data related to the menu items. At the moment I'm using a Specialized.StringCollection in the project settings but this only allows me to store a single line (i.e. the command line).This means that the text of the menu items is whatever command line the user has defined (not ideal).What I would like is to have a "friendly" name for the menu item (e.g. Start Notepad) and have that associated to notepad.exe.What's a good way to store this data so that I best dynamically build the menu items every time?
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Sep 3, 2009
My xml files were looking a bit clumsy when i read them, what i have done now is to save them in the xml in this format:
vb.net <field>{value1|its partner value2}</field>
i noticed {|} this is the format that vb.net uses for arrays, i was wondering if that's an ok way to store things, on retrieval once i get the node value, what would be the best way to break up the {value1|it's partner value2} variables to use, explode the | and get parts (0) and (1)?
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Feb 6, 2010
Basically, I want to have a database that's lightweight and I won't need to install amillion other things on my clients computers for them to access this.I just need a simple method of reading and writing values so that they're not hardcoded into the program. I could do MySQL (which is what I'm very familiar with), but it doesn't need to be making calls remotely.
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Oct 24, 2009
In a resource string, not one that you declare in the code, but rather in the resources itself, how do I store multiple pieces of data in it?
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Jan 26, 2012
The user will basically be able to select a file on their hard drive, and enter some details or info about the file and then save it
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Dec 4, 2009
I'm receiving a lot of data at the rate of 19200. I'm using read byte to assemble a buffer and process it. When I receive certain data I need to reply to the sender. I noticed that my replies are not fast enough. So I did a test where I unplugged the sender and noticed I was still receiving data! That I found was because the serial port buffer still had data from the sender that I didn't process. Anyhow I'm using Visual Studio 2005, the serial port object. How can I process the data faster. Would something like SerialPort1.ReadExisting or ReadLine work faster?
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Sep 23, 2011
I just wondering is there any faster way to save a data into a database. Lets just say i have a datagridview that contains 10,000 records. To save all of it you will use a loop right but it will take a several minutes or maybe a seconds. Same with a datatable right.
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Oct 1, 2009
One of the time consuming factors of writing the DAL is adding and assigning paramters of teh stored procedure if ther are more than 10 parameters and must link more than 3 tables this process will take a horrible amount of time..
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Nov 29, 2009
I am reading data from a socket (as bytes) and storing this data in a string. Then later i need to access specific bytes within the string and do some math with them. However the bytes that I read back from the string are not what I am expecting.
[Code]...
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Jul 31, 2010
use of the shared function, which returns a reference to a datatable to the calling code. While there a probably many debates as to the preferred use of ADO.NET objects, my question is about the Shared Method aspect. Note that the dataTable is declared within the Shared Function, so it seems to me you get a new one every time, yes?
Public Shared Function MyData() As DataTable
Dim ReturnData As New DataTable
'A silly example of retreiving some data into a datatable:
Using cn As New SqlClient.SqlConnection("SomeCOnnectionString")
[code]....
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Apr 20, 2009
I would like to know how cam i go faster than 1 interval? [code]
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Mar 18, 2010
[code] I'm trying to post data on these two TextBoxes using HttpWebRequest method , Blow is the post data string [code] So when i send this request to the website , It only post the password but not the name , There's something causing conflict with the word name either 'name="name"' this line or something else.
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Dec 9, 2009
I am currently exporting from a DataGridView to Excel by looping through all the rows & columns in the DGV, which is very slow when you have a lot of rows. Here is the code I currently use:
For i = 0 To Me.DataGridView1.Rows.Count - 1
For j = 0 To Me.DataGridView1.Columns.Count - 1
xlWorkSheet.Cells(i + 2, j + 1) = Me.DataGridView1(j, i).Value.ToString().Trim
Next
Next
Is it possible to export an entire row to excel, instead of having to do it one cell at a time? I'm just looking for ways to make the process faster.
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Mar 18, 2010
I have a form with a background image and many checkboxes whose backcolor is set to be transparent.
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Apr 7, 2011
Since i have a background on my progam it is very slow. You got a code to make it faster?
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Dec 22, 2010
I have been used getelmentbyid in past in vb6 using webbrowser control and internetexplorer instance But in vb.net i tried to fetch webpge using the httpwebresponse Which gives the html / source in the form of sting Is it possible to fetching data by getelementbyid using httpwebresponse and httpwebrequest method ?
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Nov 19, 2011
What faster methods are available for VB to access the internet?I.e. methods which are faster than simply using VB Browser, as people make web bots which access multiple sites quickly which I would imagine meant there is a faster way.
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Oct 27, 2009
I have a function that I use quite a bit that I wrote more than 2 years ago. It works fine but recently I saw how it can use up a good deal of time under certain condition. Here's some code that uses the function SelectValue The function works so that if you had N which you plug into the function rising continuously while SelectLimit was set to 255 then SelectValue would match N until N reached 256. SelectValue would start to descend to 0 until it reached 0 and then it would again ascend to 255 and the process would repeat. So SelectValue(255, 255) would return 255 and SelectValue(256, 255) would return 254. SelectValue(257, 255) would return 253.
Option Strict On
Public Class Form1
Dim sw As Stopwatch
[code]....
The function works exactly as I want it to but if one of you knows a way to write this so that it will process faster then you can let me know. I get a result for processing time of 6.11 seconds on my computer for the above code.
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