Code Executing To Fast For Lbl Text Change?
Aug 23, 2011
When you click a button on my form, it opens a folder dialog box & gets the selected path, then changes a label's text to state that it's starting to process the directory then it goes ahead & opens a new streamwriter & continues on into my other sub for listing directories..roblem is the label isn't changing before it does it's processing, I figure that is because it's processing to fast to actually display the text. Even if processing the directory takes a minute or more the label won't ever change, which should have happened before it started processing the directory.
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Aug 13, 2011
I used this:
Dim i1 As Bitmap = owall.Clone
Dim i2 As New Bitmap(ChangingWP)
Dim g As Graphics = Graphics.FromImage(i1)
Dim cm As New Imaging.ColorMatrix(New Single()()
[Code]...
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May 20, 2012
How can I change my code # to Code & in All the text files within a folder
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Mar 4, 2010
I need to write software that will do a lot of math. Mostly it will be matrix multiplication with integers to compute DCT. How much faster should I expect the code to run in native c as compared to VB .Net? Factor of 2, factor of 10, factor of 1000...?
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Feb 19, 2006
I've been trying to mess around with image recognition in C# for some time now. But to do that, I need acces to all the pixels in the bitmap individually. At the moment, I'm using getPixel and setPixel. It works, but it's VERY slow. Is there any faster way to acces pixels in a bitmap? Unsafe code maybe?
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Jun 22, 2010
I am running SQL 2005 Standard Server. I am using Visual Studio 2010 for development.
Let me just say that what I have below works, I would just like to have some constructive critisism.
CODE:
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Feb 5, 2009
I have a coma separated text file with loads of records. Usually when we read a text file we start from the first line and go towards the last. I know that there will be x comas per record.But I want to start reading from the last line and then towards the top. This enables me to stop before I reach the top (depending on the data).
What would be the fastest way to read a text file in VB.NET?. I am using VS2008. Basically I want to read from last line and go upwards and stop when I want. I may not need to read the entire file.
[Note: I want to store data in an array and not show it in some textbox]
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Feb 11, 2012
I am newbie using asp.net I want to ask on how to change color of the label with some conditional statement. For e.g if the stock is below 20 then the label will became red if not then it's black.
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Dec 14, 2011
I am compiling and running code at runtime. Can I stop this code midway through if I wish? Like the 'stop' feature in Visual Studio that stops the code if desired?
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Jun 21, 2010
background worker is not executing all the code in side it. windows application..Although there is not any exception.
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Dec 31, 2010
I`m now at the point calling server from vb.net, and run query inside vb.net code.I have write two codes on button click. One button is checked server connection, other should execute query for server table.Connection code is working, as I have set two messages, and getting successfull message. Second code is not working, as nothing happened when press button. Sql statement is very simple, and it works if I run it manually.[code]
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Jan 18, 2011
Any simple/easy (emphasis on easy, I am a major beginner) to read through text files quickly, search for strings and pull information. I am currently using the 'StreamReader' function and 'InStr' command, but the files I am working with are gigantic and this is taking from 1/2 an hour to a few hours to work its way through.
Here is a sample of the code I am currently using - poke fun at will, I am a major newbie.
strContentsTime1_jntfor=0
Do Until strContentsTime1_jntfor Is Nothing
strContentsTime1_jntfor = objFile1.ReadLine()
'look for string 'time'
strFindStringTime_jntfor = "time"
[Code] .....
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Apr 5, 2011
I'm creating an application that finds all of the text in a picture regardless of text size or font (whithin reason, Just the basic monospaced and default windows fonts). I tried making my own but it was slow and very unreliable. I need it to work fast (as close to instant (give or take 1 or 2 seconds)). I have to run it on images 1000+x1000+ (Nothing more than 1500). I have to take the values of the text and the position of it in the image.
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Jan 19, 2011
Any fast way to read/search very large text files. I found this post for VB6, but I don't have the slightest clue what any of it means. [URL]. How to read/search huge files (up to a few GB and 20+million lines).
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Nov 27, 2010
I have two module-level variables and Linq query. I want the results of the Let clause to change the global variables - is this possible?
For example:
Dim X As Integer = 0
Dim Y As Integer = 0
[code].....
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Feb 16, 2011
I want a multi line textarea using VB.net.I have used textarea in html before but I have never used it in VB.net I tried:
<text area id="TA" cols="100" rows="20"></textarea>
I introduced space between text area only coz I cud not write it other wise in this forum.. in my code there is no space. But I cannot change the value of textare using my code behind file.
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Dec 9, 2011
The following is some code to execute code at runtime: Dim SourceCode As String = txtCode.Text
Dim Dlls() As String = {"System.dll", "System.Core.dll", "System.Data.dll", "System.Windows.Forms.dll"} 'Any referenced dll's
Dim Compiler As New VbCompiler(SourceCode, Dlls)
Dim CodeAssembly As Assembly = Compiler.Compile
If Compiler.Successful Then
[Code]...
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Feb 19, 2008
I'm having a really weird problem with my current project in Visual Basic 2005.To make a long story short, I have an EventHandler subroutine (Clock1_tick) which triggers on the Elapsed event of a Timer (Clock1). Some, but not all, of the code within the subroutine executes correctly. Some of it doesn't execute at all, even though the debugger shows that each line of code is being read.
The overall details of the program aren't really important, but within the program I have a VB class file which can be instanced via the "New" keyword and contains a series of functions, subroutines, and properties... a typical class file. The class file is for managing sound channels..The frmMain includes a status bar with a label to display the program's current status. It also includes a public sub which recieves a string and sets the text of the status bar:
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Oct 10, 2010
I'm trying to replace text using this method:
Add each characted to a String list (List(Of String)), execute the replace function for every type of character (for example: Text = Text.Replace("A", "0AA") Text = Text.Replace("a", "1AB")), but there's a problem: it replaces the text, but it replaces those replaced characters too, so when I replace "A", it will result something like this: "0AAB AAA 0AB"... (a long text)), and then add the characters to the result string
how make the application stop and start the replacing of the next character
I'm trying to use this code block:
Dim ReturnedString As String = GivenText
Dim ListToEncode As New List(Of String)
Dim curr As Integer = 0
[Code].....
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May 13, 2009
i seem to be having issues with my simple count down project. The count down work how I want it, there is also a pic of a rocket that move up when the count down button (Button4 - the form was set up in class as a quick example, so there was no need to name the buttons) is pressed. The problem is that the count down "10....1...Blast Off" shows after the rocket has moved up, I want the countdown text to show, then the rocket to move.The countdown is outputted to a ListBox.Here is my code thus far: (I have re-worked is a bit, starting to look messy)
[Code]...
I am not sure if I should be doing it as a function, that was just one of my attempts to get it to output everything in the right order.
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Feb 25, 2011
Im trying to create an app that can Compile and run vb.net code while running. Like I will have a multiline textbox and a button that runs the code. The code should run as if it Were to be in a normal Sub. I've heard of system.reflection but all the examples microsoft provided have failed.
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Dec 13, 2011
I am compiling and running code at runtime. Can I 'stop' this code midway through if I wish? Like the 'stop' feature in Visual Studio that stops the code if desired
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Dec 5, 2011
In my application, I have a call for an update to a table on my database. I know that it is executing because I get a 1 returned when checking the number of rows affected but when I look on the DB the value is not updated - I have refreshed and still no update. Here is the code, taskgrp_template is type bit and taskgrp_id is type integer. Id is also set to the correct value, as the result of my tracepoint - results listed below code.
mycmd.CommandText = "UPDATE p2_taskgroups SET TASKGRP_template = 1 WHERE TASKGRP_ID =" & id
rowsChecked = mycmd.ExecuteNonQuery()
Tracepoint result: the value of id is 55 and the value of templateCheck is 14 the number of rows affected was 1
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May 18, 2009
Having read the rules I don't have much code to show apart from these lines I want to have executed just before the program or a form closes.
If My.Computer.FileSystem.FileExists("File.file") then
My.Computer.FileSystem.DeleteFile("File.file")
End if
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Jan 16, 2011
I have a button with DialogResult OK set.
I'm using the following code to try and do validation[code]...
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Jul 29, 2009
I'm trying to change a code for text justification so that it works for urdu editor. The problem is when i justify code the alignment changes to left side. I mean cursor moves to the left side of rtb. In code the value of PFM_ALIGNMENT is set to 8. I wanna know what it means and if i hav to change then what value shud i use for making cursor stay at right side of rtb.
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Mar 23, 2012
i'm trying to make a simple email sender and the problem is that during the sending process my application freezes, therefore my progress bar also freezes so is there anyway i can try to make application not to freeze?
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Jul 14, 2011
When you need to do random access to the lines of a text file, the regular solution is to put those lines in a list and access them in that list.But doing this if the text file is large creates a large memory overhead and may cause some memory stress on the application.This class maps the file and provide the ability to read any particular line in the file at a random position, without the need to read or put in memory any other line but the desired line. The only memory overhead involve is the 1024 bytes buffer of the base stream.Even if the file mapping can be a process that consume a noticable amount of time if the file is very large ( ~ 5 seconds for each 100,000,000 caracteres) , once the mapping is done the access to a particular line becomes instantaneous regardless of the size of the file. (The file mapping can always be done at a convenient time (ex when the process load) and can be done on a worker thread The class is base on a StreamReader to support the differents Text Encodings Example uf usage ( As I say, if the file is very large, dont do it like that, but declare the class at a convenient time)
Imports Reader = System.IO.MyStreams
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code]....
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Sep 26, 2010
im searching on how to change labels text color inside the code depending on my needs , for example my label's text is set to = "hello world" , can i change hello's world color to x and world's color to y?
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Feb 15, 2012
I need to disable a button after its pressed so the user does not have the ability to click it again as this would replicate the process in some cases.After alot of searching I found some tips - alot of code I found I could not understand.This is what I have come up with:
On page load:
If Me.Page.IsPostBack Then
'lblDetails.Text = "disabled"
[code]....
I also read somewhere that I should use: System.Threading.Thread.Sleep(1000) to delay the process or something - not entirely sure why I would do this though.Although, the problem with my above code is that when the code behind page performs validation checks, it exits sub before executing my INSERT SQL code - so when it does this it also disables the button.I am not entirely sure if the above method is fool proof or whether it is a **** piece of code that won't work 100% of the time.On another website I found a script to put on the actual HTML page with <script> tags:
Code:
<script type="text/javascript">
disableSubmit(frm) {
[code].....
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