I have this little application that runs a SQL query works great, now I want to have a Start Button run the and display results then System.Threading.Thread.Sleep(300 * 1000) for 5 min then run again and display results and loop till I buttonstop_click. unsure if the sleep is the best method.
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I am using VB 2010 , I have a loop that takes something like 5 minutes until it's finish. I want to allow the user the option to stop it in the middle or whenever they want. There's a button which starts the loop, and after I click it the loop starts running and the button is sort of "stuck".I saw something called "background work" in the VB Toolbox, can it be a solution to my problem?
View 2 RepliesI created a form and have the variable inputs for 4 motor run statements. Then with a start button the script starts and it is surrounded by a for next statement to loop 10 times. It works fine but if i need to stop the execution of the script with a stop button. I put the stop in a new section but of course does not work to do a motor stop. It just causes the exe to not respond till the loop is complete. Just need to be able to stop the Run1_Click button section.
Edit:I do not mind if it finishes the 4 motor run commands and then stops execution of the loop. So need to figure out a way to trigger a stop from a button on the form to stop the cycle. For the future the loop will be a variable integer input so 10 will not be the standard.
Edit::Does a ' Do ' statement sound like the thing to use? If so how and where would I place that? Have a Stop button on the form and it would stop after the 4th motor run command.
#End Region
Declare Function InitStp Lib "stp.dll" () As Integer
Declare Function RunMotor1 Lib "stp.dll" (ByVal steps As Integer, ByVal interval As Integer, ByVal direction As Integer, ByVal outputs As Integer) As Boolean
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I am fairly new to VB but really enjoying programming. I'm looking to create a counter that counts to 25 and loops back around again with a button control and another button control to stop it. So I press a button to start and another to stop and I want it to display the number it stopped on. Is this possible? and how do I do it if it is? I can figure out how to display the label and create a simple counter(that doesn't loop), but I'm unsure on the rest.
View 2 RepliesI am trying to make an application with a start button and a stop button on a stop watch program. These are the codes I am using but my seconds on the stop watch don't start.
Public Form Dim intSecond As Integer = 0
Form 1
Private
Dim intSecond As Integer = 0
intSecond +=1
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After I write my code and try to run the program, the seconds will not start,
Actually my problem is to stop a loop when i click on stop button. example:i have two buttons 'start' and 'stop' in start buttom i wrote a for loop as
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I have been able to successfully place a stopwatch into the worksheets of a grading system I use for speeches. My difficulty is that the sotpwatch stops watching when I begin to keyboard comments or enter numbers that trigger the vlookup's created for general comments. Below is my code. My question, is there code that I need to add that will ensure the timer continues to time until I tell it to stop. The stopwatch I have uses a start button and stop button. Each instance is set for the sheet where it needs to keep time.
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I have written a function that gets the alexa ranking of a given url, now this function works perfectly but I want to loop through a ListView of urls and grab the alexa rank of each item (url) with my function.The code works great if I put a MessageBox in the loop to test that the function is returning a value but when I remove the MessageBox the loop does not work.I need it to loop through adding each result without a MessageBox stop in each loop.
vb
For Each Item In ListView1.Items
Dim result As Integer
result = GetAlexaRank(Item.Text)
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an application i developed using vb 2008 express, to fill a web form with data from an access database, one after another when a button is clicked hasn't given me what i expected. the loop was suposed to stop after filling web form with the first data on clicking a button and continue to fill the webform with the next(2nd) data from the database on clicking the button again. Below is the code i wrote
Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e
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soo i have some music that automaticly plays when i open aplication
how i stop this music from playing and that it continues playing from where it was stopped from, when the same button is pressed
I am trying to write this loop to find the word start and then insert a word in a column until it sees stop and then go through all the data and do that.
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I want to include a functionality in my application such that when the user clicks on a button, the user should be able to record the voice, and when stopped, the sound should be saved. Here's what I wrote for the Start and Stop button.
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I am having a form1 with only two buttons----
1) Start backup
2) Cancel
If "Start backup" is clicked.... system requires a lot time for backing up many files from source to destination. If I want to free the user before "Start backup" procedure is not completed ...
then what would be the code for "Cancel" button...? Only I want to stop the running procedure of "Start backup" quickly.
I have a For..Each loop which loops trough all grid's rectangles and changes the fill of them randomly. I change the fill with a color animation. Here's my code:
Dim rand as new random
Dim changeColor As New Animation.ColorAnimation
changeColor.Duration = TimeSpan.FromSeconds(0.5)
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The problem is that the loop doesn't sleep. I want to trigger the animation, then wait until the rectangle fill is changed and then continue with the rest, but it seems that all of the rectangles fill are changed in the same time.
I want to add a button (ButtonCalculate) to make the user select this button to generate the loop for calculating the sum.
Private Sub TextBox1Integer_TextChanged(sender As System.Object, e As System.EventArgs) Handles TextBox1Integer.TextChanged
Dim OddSum As Integer = 0
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Is it possible to use a for/next loop to automatically make changes to button properties?This is the code I'm trying to make work:
For i as integer = 1 to 10
button (i).height = 10
next i
I'm completely new to working with more than one thread at a time but I've been reading up on backgroundworker quite a bit today. I get the general idea and think I could use it ok if it weren't for the fact I have a loop in a loop and I don't think they could be run inside a single thread together
View 4 Repliesi have a web browser control, that refreshes pages on a loop after calling a few subs, i need to create a delay in the loop so that the page has a chance to refresh and redisplay before it loops again. i tried the code below, but it seemed to freeze the entire form, elements including, so the web browser didnt refresh before the loop, so how could i create a non form-freezing delay for a loop?
For count = 1 To 20
WebBrowser1.Navigate("URL")
simcheckcheck()
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If you click on the backup button in my program, it starts to copy files from source to destination using a For loop.I can't cancel this For loop and I can't click on anything else in the window, because it won't respond untill the for loop completes.How can I let the program check if the Cancel button is pressed during the For loop and if pressed exit the loop?[code]...
View 4 RepliesI have the following problem:
I've got 3 lines
If I click the "next" button
Line 1 shall be highlighted
Then I I click ""next" again
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a for i = 1 to 3 to loop within the Button1_click makes i directly 3 of course so line 1 and 2 will not be highlighted.
I am not allowed to use a msgbox in between cause then it would be easy, cause I would wait until "OK" would be pressed...
How can I make this for i = 1 to 3 loop work and highlight the lines 1, 2 and 3, one by one after pressing the "Next" button?
I have a simple project that calculates the grade avg of male, female, and both using a listbox and radio buttoms for male and female. The program needs to update each time I use my btnCalculate button by adding one student and updating the avg.MY question is how to I get my do/while loop to work each time by just hitting my calc button? [code]
View 1 RepliesI want to do a For Each loop where i can check whether each button is enabled or disabled. If the button is enabled then i have to obtain the values in the tags for each button. I have 26 buttons each containing different values (cash prizes).*IMPORTANT: this code needs to go under the button so every sixth time its pressed it checks the buttons.
Pseudo-Code:
btncase1.tag = 5
Begin while statement to go through each button
Check each button to see if it is enabled
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I am writing a simulator program that gets its I/O from external sources with results displayed on a form. I heve composed a form, with graphics that look great, but when I call a loop to actually start the simulation, all my labels on the form go transparent and the 'stop' button I have created does not function.I have tried placing this continuous loop in the form code box and in a separate module but to no avail. Even just putting a clock on the form does not work - it prints to screen initially, but only refreshes when I run the cursor over the stop button.This leads me to believe (remember I am a VB novice)that a form is full of Subs that only run once on form load.So where is the main body of code placed that will run continuously; from where I can check the button status and update the form?
View 9 RepliesI'm developing a interface in VB.net which will control two stepper motors. Counting on your tips I managed to control them manually I mean, there're 4 buttons used to move the motors clockwise and anti-clockwise. The point is, the main part of our project is control the motors automatically. Our idea is based on two editable fields, X and Y, where the user would insert the displacement value he'd like the motor to move. After filling up both fields, the "GO" buttons would be pressed. So the loop would run depending on the displacement values in X and Y.
Attached you can find the main screen:
Below you can find the main code.
Public Class Form3
Dim velocidade As Double = 0.004
Dim X As Integer = 0
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How would a person stop a try loop once it has started a button click on the same "Form1'? Let's say in this example p = 100. If I wanted to stop it using a button how would I, I have searched Internet and found nothing that is working.
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Im hoping to create an auto clicker which had variable speed control, one button to start and pressing space to stop the application. When start is pressed i want it to click 2 or 3 different locations on my screen if this is posible with about a 1 second delay between each pointer move.i could really use some help with getting started or even better a link to an already created application for this.
View 6 RepliesIn my application, i want to have 10 webbrowsers, which go to google like this.
For i = 0 To 9
Dim Browser As New WebBrowser
Browser.Name = "Browser" & [i]
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In my application, I want to have 10 webbrowsers, which go to google like this.
For i = 0 To 9
Dim Browser As New WebBrowser
Browser.Name = "Browser" & [i]
Browser.Navigate("[URL]")
Browser.Visible = True
Next
So now I will have 10 webbrowsers aimed for google, right? So how do I make a loop that clicks the search button 10 times? I know I need to use member_invoke like this
Browser.Document.GetElementById("search").InvokeMember("click")
But I have no clue how to code the loop.
I have 1 picture box, and 1 image list with 11 pictures in it. I also have 1 button.
Heres what I want to happen:
I click on the button and the first image in my image list goes into the picture box.
I click the button again and the second image in my image list replaces the first image in the picture box.
I click the button again and the third image in my image list replaces the second image in the picture box.
I have one textbox, one button and 11 listviews. Each listviews contains a unique list of items. I need to search every listview for text in textbox when button is pushed. Currently have 11 separate searches 'copies' each using a listview by name one after the other. How can I have it to loop through every listview automatically when button is pushed?
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