VS 2010 : Use Controls While A Loop Is Running?

Oct 4, 2011

Basically what I have are two loops, one inside the other, that will run until the given condition is met. Exactly what I want. My problem is that I want to be able to use the controls, like buttons, while a loop is going on.

I originally did not think of this until I had built this part of my program, what I want to know is if there is a way to use controls while a loop is going on or if their is an alternative.

1)I know timers can be used to meet these goals, but they did not work out as I had hoped and using two timers (1 to represent each loop) I do not believe is efficient.

2)I have considered using recursion, but have found this may not be very efficient either and am not quite sure if this will do what I want.

These loops run as long as the number the user inputted. So it could theoretically run for 100,000+ times. I am not looking for speed, but it would be good if there were a faster method that allowed me to use controls while it loops.

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VS 2010 - Loop Controls Through Counter?

Jun 5, 2012

I'm trying to load a file where this file has, like, 10 lines. And I want to load each line (0 to 9) to each TextBox in my app (TextBox1 until TextBox10). So, there's a way to do this with a counter?

Like this mine code (that doesn't works):
If (System.IO.File.Exists("configs.ini")) Then
Dim configs As String() = System.IO.File.ReadAllText("configs.ini").Split(vbNewLine)
Const Max As Integer = 9
Dim TextBoxes(Max) As TextBox
For i = 0 To Max
TextBoxes(i + 1).Text = configs(i)
Next
End If

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VS 2010 Loop Through Controls And Change Value?

Oct 22, 2010

I want to reset programatically the values of all the labes on my form for example label1.text=1, label2.text=2 etc etc (there are 90 in total)

I came up with:

Dim i As Integer = 0
For Each objcontrol As Control In Me.Controls
If objcontrol.Name = "Label" & i Then

[Code]....

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Setting A 'default' Value To Controls (textbox) (loop Controls)?

Nov 11, 2009

I have aspx form with several textboxes.They are populated with values from a table via retrieval of a dataview.If the row count for the dataview is 0, then I'd like to reset the values in all textboxes. How can I loop through all the textboxes and set a default value?I've tried the following, but no sucess.

For Each ctrl As Control In Page.Form.Controls
If TypeOf ctrl Is WebControls.TextBox Then
CType(ctrl, WebControls.TextBox).Text = ""
End If
Next

My first For Loop was using Page.Controls but it returned only 1 count.The textboxes are inside a tabpanel (ajax), so do I have to locate the tabpage and then find all it's controls (for each tabpage)?

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VS 2008 Loop Through Controls Doesn't Get All Controls?

Jan 21, 2011

I am rather irritated at this. I have no clue why looping through controls on a form and in groupboxes leaves out 75% of the controls.

Here's the code I have:

Dim settings As String = ""
Dim gbControl As Control
Dim gbbox As Control

[Code]....

I want to have setting save all settings to an ini file, and not have to reprogram the saving routine when I add a group box or control. At random times, any number of controls can be disabled, checkboxes can be checked and unchecked, radiobuttons can be checked and unchecked. Regardless of the state of the control, I want the control to show up in the loop. But they don't. Only controls that are enabled and only checkboxes that are checked, every other control state is ignored. That's crap, and is definitely not what is needed by any programmer of any type. We're capable of determining if a control is enabled, hidden, checked, visible, and otherwise.

How do I get the controls to be included in the loop regardless of their state?

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Escaping A Loop While It's Running?

Jun 22, 2010

If I'm running a Do... Until or a For... Next loop in a button click event, is there a way I can allow the user to click the same button while the loop is running and escape the loop?

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For Loop Running Backwards?

Sep 6, 2011

Is it possible to make a For loop which count down. Like:

For i as Interger = 5 to 0
'Do stuff
Next

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Loop While Application Is Running?

Nov 19, 2009

I am writing a program that is connected to an rs232 port and I need it to constantly be monitoring the incoming data. I think there are a few ways of doing this like checking the buffer but I need this to be running while I am connected to the port. I have a play button and a pause button for the port. When the play button is pressed, the port is open and the button is no longer enabled until the pause button is pressed. I need to have a while loop running the entire time the play button is no enabled, or pressed. I am having a hard time knowing where to implement it in the code.

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Can't Able To Remove A Row From A Table While Running Through A Loop

Apr 2, 2010

I am iterating through the table rows . if the row row is null I just want to remove the row.[code]....

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Running A Loop When A Button Is Pressed?

Sep 30, 2011

I'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

[Code]....

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Sql Server Loop Running VERY Slow

Apr 20, 2011

1. load gridview from an uploaded excel file (this would probably be about 300 records or so)

2. compare manufacturer, model and serial No to my MS SQL database (about 20K records) to see if there is a match.[code]is there a better way to find a match between the two?

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Textbox Text Not Updating While For Each Loop Running?

Mar 8, 2012

Windows Forms, VB application... Forgive me in advance for this very elementary question but I am overlooking something really simple here. I would like to have a label show the current value of a variable as the for each loop runs.. I created a very simple Button Click event to figure out where its failing. As it is right now the value does not display until after the for each loop finishes running, which it should actually display the counter value each time it runs through... I know this is possible and really simple because I did it years back but for the life of me cant figure out why I am missing the bar as it should constantly update the label to reflect that?Test Sub is as follows:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim counter As Integer = 0
For x As Integer = 1 To 200000

[code]....

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While Loop - When Running The Debug The Program Crashes

Mar 15, 2012

I've been having a bit of a problem using the while function.

Here is my code (Simplified):
Dim RandomNumber3 As Random
Dim RandomOutput3 As Integer

[CODE]..............

When running the debug, the program crashes, and when I step into the program, I find that this While statement becomes an infinite loop. This is a program that uses random number generators to assign a value to something, and this while statement is necessary so that there is never two of the same values showing (RandomOutput, RandomOutput2 & RandomOutput) Have to be different to one another.

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Loop Statement - IF Process Is NOT Running - Delete The Files

Aug 12, 2010

I am currently teaching myself the caveman code of Visual Basic (VB.net). Apparently I fail at If-statements or something, because I cannot get this to work...

[Code]...

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Method To Append Results Of For Loop In Variable While Running?

Feb 8, 2012

While a "for loop" is running in VB.net, C# or Python which method can be used to append each result to a variable?

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Add Shapes/Controls In A Loop VB.NET

Jun 8, 2011

I've to show some PowerPacks.RectangleShape in a PowerPacks.ShapeContainer. A loop in my code add shapes to the container

(objshapecontainer.shapes.add(objshape), but at the end of the loop, only the last shape is displayed, in fact objshapecontainer.shapes.count doesn't exceed 1

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Loop Controls To AddHandler?

Feb 20, 2012

I have the following code to dynamically add handler to my controls

Private Sub HandleMyControls(ByVal Proc As EventHandler)
For Each c As Control In Controls
Select Case IsContainerControl(c)

[Code].....

There are some subs and functions that help me in what to change and where to loop. My problem is that right now, I can set only .enter event of the control I tried to set parameter as Event but i got an error on that. So, what I want to do is something like this:

Private Sub HandleMyControls(Event as ???????, ByVal Proc As EventHandler)
If MatchControl(c) Then
AddHandler c.Event, Proc
End If

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Loop Each On Page Controls

Jun 11, 2009

I'm new to ASP.NET and i would like to ask, How do i loop on each Labal control in the page.

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Loop Each On Page Controls?

Sep 8, 2010

How do i loop on each Labal control in the page i tried :

For each lb in Label.Conrols
next

but for no avail

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Loop Through A Collection Of Controls?

Feb 24, 2010

Im trying to loop through a collection of controls see code:

Private Sub addZeros()
For Each ctrl As Control In Me.Controls
If TypeOf ctrl Is GroupBox Then

[Code]....

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Using For Each Loop To Work With Controls

Jan 2, 2012

I can use the below code snippet to clear the text from each textbox on a form.
For Each ctl As Control In Me.Controls
If TypeOf ctl Is TextBox Then
ctl.Text = ""
End If
Next

But if I want to use it to ensure that all radiobuttons in a group of radio buttons are unchecked then it doesn't work i.e.
For Each ctl As Control In Me.Controls
If TypeOf ctl Is RadioButton Then
ctl.checked = false
End If
Next
I'm assuming it is because the checked property is not common to all controls.

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VS 2008 How To Loop Through Controls

Aug 23, 2011

I can't use the normal method, my controls (picture boxes) names contain numbers such as 00, 01, 02 etc which corrispond to my multidimenional array.

I'm attempting change the picturebox's values in a for loop via the counter in the loop, for example:

For i = 1 To 4
PictureBox(i).enabled = False 'Picturebox1 will be the first one(counter starts at 1)
Next

I basically need to access each one as I would with an array, I can't type the full names out, can only refer to them via their names + counter number because I don't know what control name I would be dealing with at that time in the loop.

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Achieve Form Controls From The Running Process?

Jan 22, 2009

dim prc1,prc2 as Process
dim f,f1 as form
dim aHandle,bHandle as IntPtr

[code].....

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Controls Created In Running App Not Disappear When Closing

Mar 23, 2011

How is it made, controls created in a running application appear again when I reopen it? The images loaded into picturex must be saved in a database?

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How To Achieve Form Controls From The Running Process

Jan 22, 2009

dim prc1,prc2 as Process
dim f,f1 as form
dim aHandle,bHandle as IntPtr

[code]....

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How To Retrieve Existing Controls From A Running Exe File

Jan 14, 2009

How to Retrieve the existing vb controls from a running exe file [code]Application 2 should Retrieve the existing vb control names from a running Application1..Application1 may consists of textbox, combobox, radio button,checkbox,button etc..I am presently using Microsoft Visual Basic 2008 Express Edition

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Multiple Webbrowser Controls Running With Different Proxies?

Jan 31, 2011

I'm trying to run a specific test on my server using a program that can run multiple requests (using Webbrowser control) at the same time but with different proxy settings.What I am using now is working but only for one webbrowser control, im seeking advice for how to run multiple side-by-side.

<Runtime.InteropServices.DllImport("wininet.dll", SetLastError:=True)> _
Private Shared Function InternetSetOption(ByVal hInternet As IntPtr, ByVal dwOption As Integer, ByVal lpBuffer As IntPtr, ByVal lpdwBufferLength As Integer) As Boolean

[code].....

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Retrieve The Existing Vb Controls From A Running Exe File?

Jan 14, 2009

How to Retrieve the existing vb controls from a running exe file

For example i am having 2 applications
Application1-unknown and an Exe file
Application2-my application

[Code].....

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[2005] TabControl Hiding Controls After Running

Mar 4, 2009

I'm having a weird bug with a TabControl that I've never seen before. Here's what I got:

A TabControl with 3 tabs. The first 2 tabs have an inherited DGV on them, and the third page is like a options page. The 3rd tab has a bunch of labels, comboboxes, checkboxes etc...

Whenever I play/start debuggings/run the app the controls of the 3rd page turn "invisible" on the design view. They are still shown in the app. Here are two pictures showing what I mean:

This is what the designer looks like BEFORE I run it: This is what the designer looks like AFTER I run it (Running app on the right): I've tried building/rebuilding/cleaning and nothing. If I close the solution and VS and reopen it, it will show but that's a pain to deal with.

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VS 2008 UI Threading - Move/interact With Both Forms While The Loop Is Running ?

Oct 17, 2009

When it comes to threading. I've managed to adapt one of JMcIllhinney's backgroundworker codebank examples to somewhat suit my needs, but not completely. I have a main form, and a second form that appears while I'm running through a for loop. It informs the user what is currently happening. I set up a backgroundworker that allowed me to continue to use the main form during the for loop, but the other "status" form was completely frozen, and any labels or graphics were shown as white boxes. I am struggling to figure out how to be able to move/interact with both forms while the loop is running.

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