Button Interrupt To Stop Doing Continuous Event?
Apr 27, 2010
I have an event I want to do continuously until a button interrupt is pressed.
Here's the pseudo
Click button 1:
Check if button 2 is pressed
If not, do stuff
If so, stop doing stuff
End routine
So what I currently have is this:
Dim randominteger As Integer = 0
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StartSampleButton.Click
[Code] .....
Unfortunately, it's never breaking outside of the first loop. How to get around it?
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Jun 22, 2009
A spreadsheet formatter that I made for the department opens and closes Excel spreadsheets in the backround. If someone opens Excel while the macro is running, it stalls the entire program. I need a way to sense Excel opening, then stop it, preferably with a message box saying what just happened.
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Sep 26, 2008
How do you stop a sub that's called from a button click event?
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Nov 1, 2009
I 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
[Code]...
After I write my code and try to run the program, the seconds will not start,
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Aug 18, 2009
Microsoft's System.io.file.exists and System.io.directory.exists can take FOREVER, especially if you're in a situation, where you've unplugged from the network and you're looking in a share.
So, to get around this, I've created a thread that times out after 3 seconds. Returning false, if the calls above haven't yet returned. To do this, my main thread passes its instance to the new thread and immediately calls:
Thread.Sleep(TimeOutInSeconds * 1000) ' Where TimeOUtInSeconds = 3
The new thread then goes and checks for the file / folder using the System.io.file.exists / System.io.directory.exists functions.
Regardless of the result, then it uses the main thread's reference to call Thread.Interrupt().
My main thread doesn't get interrupted. It stays there for the full 3 seconds. If I were to change that to 3 minutes ( and I have ), it'll sleep for 3 minutes.
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Feb 26, 2009
Alright, so I'm still working on the slot machine. I have three timers all independently going for my three "wheels" of the slot machine.
My issue, is that I'm trying to make a Stop button to stop each timer one at a time, and I'm not understanding why this code isn't working. The logic completely makes sense, and the first "wheel" stops when I click the button, however, it doesnt appear to stop the other two timers.
CODE:
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Dec 24, 2009
I have a simple application that use thread pool to read a file and input the data into a listbox. I want to be able to stop threadpool from running after clicking a stop button. How do I stop threadpool? Here is the code for my application below:
Imports System.Threading
Public Class Form1
Private Delegate Sub StringDelegate(ByVal text As String)
[Code]....
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Dec 7, 2009
I 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
[code]....
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Jun 16, 2011
I have a form that you can type in a four digit code and press enter and will will run some code on a database. The problem occurs when a user click their 4 digit ID number and then click enter, the next user then comes up, types their 4 digit ID on the number pad and when they press enter it runs the code twice (this is due to the fact that the enter button has focus, meaning i intercept the enter, run my code, then the button runs that same code)
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Dec 23, 2009
I need to stop the keystroke event when I pressed a particular key. E.g.: If press alt+tab key then that keys should not perform that operation, that should operation should be stopped. I captured that particular keystroke, but I want to know how to stop that particular operation.
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Jun 11, 2011
I have a checkbox X1 that if checked it will check a column of checkboxes.What i'm trying to do is if the user unchecks at least one checkbox from the column it will uncheck checkbox X1. But I don't want it to run the event from checkbox X1 again because that will cause the whole column of checkboxes to be unchecked.
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Aug 4, 2010
I have written a application that searches the users computer for all files within a specified folder.Sometimes the number of files can be quite large. I would like the user to able to interrupt (end) this process.My code is handled by a button click in a VB win form.[code]I have tried various MsgBoxes that warn the user but I think a Esc Key or a Cancel button would be better.
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Jan 17, 2012
I'm using a long string using SAPI speech and I want to be able stop the speech rather than have to listen to it babble on throughout the whole thing. So, in one function, we'll say it's the load function, it declares a speech string: [Code] I'm trying to get it to abort reading the audio but can't seem to figure out how to get it working. I've seen examples that have used SVSFlagsAsync and SVSFPurgeBefore Speak but I can't get either to be recognized and I've added (what I believe to be) the necessary resources to the library and added the imports at the top of the page. Does anyone know how to interrupt the speech?
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May 29, 2012
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.
[Code]...
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Feb 5, 2012
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.
[Code]...
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Mar 19, 2010
I have 2 subs like below, and when I make a loop with 1000 iterations and capturePicture() in it. after 700 iterations the event is not raised anymore.
Public Sub capturePicture()
Try
AddHandler capturePic.FrameEvent2, AddressOf CaptureDone
[Code].....
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Feb 19, 2008
What I'm trying to do is your basic "You have made changes... yes/no/cancel" messagebox to show during a form closing event, and when they click cancel to stop the form from actually closing (Whereas yes would save and close, no would just close).
[code]...
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Jan 18, 2011
Does anyone know what causes and more importantly how to prevent the flickering you come by when painting a control?
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Feb 27, 2011
I'm using a webBrowser control as a simple HTML editor & I'm trying to stop the default action of creating a new <p> (paragraph) element every time you hit the enter key while typing text into the control.
I have added a handler for the keyDown event & I can insert a break tag, but nothing I do seems to be able to stop the webBrowser from continuing to process the event.
As you can see in the code I tried setting the e.BubbleEvent to false to stop the event.
The added event handler works just fine & executes before the webBrowser processes the event, but setting the e.BubbleEvent=False (or true) has no effect.[code]...
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May 14, 2011
my source code in design part is:
<asp:Panel ID="Panel1" runat="server" Style="display: none" CssClass="modalPopup">
<asp:Panel ID="Panel3" runat="server" Style="cursor: move;background-color:#DDDDDD;border:solid 1px Gray;color:Black">[code]......
Ok button click is not accessing click event.
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Jan 28, 2012
I am trying to open a MDI child form in some presenter class. In the form load handler I perform a number of initializations. If any of them fails I want to cancel opening the form. The current code does not prevent the form from opening.
Private Sub OnFormLoad(ByVal sender As Object, ByVal e As System.EventArgs)
Try
Me.mGridBindsource = New BindingSource()
[Code]....
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Mar 11, 2010
Can we stop the SelectedIndexChanged Event of combobox at runtime? bcoz when i go to last record my sencond combo is refreshed & It will show 1st Item. but i want to see related item with 1st combo.In the database records are stored with related item.but on frontend..
Amother question is, I want to work with Datagridcombobox. My datagrid contains 3 comboboxes. When i clicked on 1st ,2nd combo should be filled. Same like 2nd third. How can we handle the event of DatagridCombobox??
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Aug 1, 2010
I am using the BeginConnect method of a socket to connect to a server which may or may not be on line I need to provide my users with a countdown timer which they can abort the attempted connection if they wish to The question is; how can I interrupt the Begin Connect method of an asyncronous connection
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Aug 25, 2009
May i know how to fire an event using the serial port interrupt method in visual basic windows form? Currently, now i am using the polling method which is using the timer event to continuously poll the port every 1sec.
But now i would like to change to the interrupt method which will fire up the same event without using the timer event.
[Code]...
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Jul 3, 2009
Each time my webpage is loaded it runs a routine in the page_load event of the page behind which increments a viewcount by 1.
The problem I have is that the routine runs even if use refresh to reload the page.
How do I stop this routine from running if the page has been viewed by a particular user in their current session? [code]...
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Mar 29, 2010
I have the following code that populates a combobox:
With Me.ClassSelector
.DataSource = DataAccess.Utilities.ReferenceDataUtils.GetLookupTableData("Category_code_classes")
.DisplayMember = "Category_text"
.ValueMember = "category_class"
End With
However, the SelectedValueChanged event fires once when I set the datasource and again when I set the valuemember. In both instances there is a selected value, although that value was not selected by any user action, but rather because of the loading of the combo box.I don't think there's a 'SurpressEventFiring' property for the combobox, so how to you check to see if the change in the selection was a result of user action and not data loading?Perhaps I'm populating my combobox wrong?
edit: changed 'displaymember' to 'valuemember'
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Jun 30, 2009
Can i Know how to catch between these 2 event, Leave and Click?
I have one checking in a textbox Leave event. I will go check whether this ID is already exist in DB or not. If exist, I will prompt MSG box to user.
When I click on Close button while focus is on textbox, this textbox Leave Event will trigger first before Button Click event.
So, the form remains open without trigger Button Click event.
how to prevent this textbox leave event or how can i catch/control this situation?
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Jan 16, 2009
i declared a global variable button:
Dim button1 As New Button()
Now, i dont know how to add a click event in this button since it is a variable.
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Apr 9, 2009
Is this possible? I have a list of tasks in a threadpool that i would like to clear (stop) when a button is pressed.Is there any way i can do this?
For i = _PortFrom To _PortTo
Threading.ThreadPool.QueueUserWorkItem(wcb, i)
Next
As you can see its a port scanner, and id like to be able to stop it half way through if possible?
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Nov 13, 2010
When a button is focused by pressing Tab key, a rectangle appears on it. Even if the button's TabStop property is set to false, when the button is clicked with mouse the rectangle appears. Is it possible to stop the rectangle from appearing?
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