I have a 3 functions that should be called in order, that I want to do this in a thread say about 20 for each argument I pass. So for example
sub process_work(arg)
result1= function1( arg )
result2= function2(result1 )
result3= function3( result2 )
listview.items.add( result3 )
end sub
How do I call this sub and pass to thread on button click. Is it possible to spawn new thread it I pass argument to this sub and the current or last one is busy?
Im trying to call a procedure to run into a thread..But this procedure requires two arguments. How can I pass these arguments in to the function when the thread call:
Dim myThread As New Threading.Thread(New Threading.ThreadStart(AddressOf PopulateTermList myThread.Start()
addressof PopulateTermList should only be called without parenthesis(the VB tells me this)
I am trying to make a thread-safe call to a button on another form and I cannot figure out how to do it.I have read all of the MSDN documentation on thread-safe calls .
I am new with threads in vb.net. I write the following code i use imports system.threading declare thread as dim read as thread Then on a start btn click i write the following code
I have a processing in a do loop. In variois points within the loop I check if the variable "bCancel" is true. If so then I exit the loop and terminate the treatment. When I click the "Cancel" button, I set the variable "bCancel" to true. Basic stuff, but I would like to know how the click event is ran while my current thread is busy looping? I've found a reference to a "Gui thread" on the net but Its not very clear is this thread in inside windows or the .NET frameworks?
I have two user controls on the same page. One contains a ListView that displays navigation links, the second user control should be updated when user clicks on the buttonlink in the ListView.
Dim con As New Koneksi DataGridView1.Rows.Add(con.getIdTambahBarang(cbBarang.Text), _ con.getNamaTambahBarang(cbBarang.Text), _ con.getHargaTambahBarang(cbBarang.Text), _ txtJumlah.Text)
This is my class Koneksi code :
Public Function getIdNamaHargaTambahBarang(ByVal namaBarang As String, ByVal params As String) As String
I have 2 forms, form1 is my main form and form2 is a "Do this or do this" form (Form with 2 buttons like a are you sure form). When the user tries to close form1 if their is more than 1 tab open, it shows form2 which ask if they want to close the whole program or just the current tab. How to revive what button the user clicks on form2. How would I need to do this?
''Form1: Private Sub frmMain_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing If (tc1.TabPages.Count > 1) And (My.Settings.AskClseTab = True) Then If frm_Closemain.ActionTakin = "Exit" Then GoTo Cont [Code] .....
The problem: as soon as the form loads it becomes "Not responding" I believe this is caused by my do while loop, what other way could I go about doing this?
So Ive got some code thats in a public sub outside of my button.
Here is that.
CODE:
How can I call that method from a button click event?
What code goes between the
CODE:
This is obviously not entirely my code, E.G. the few errors from my attempt at implementing, however, before I even finish that Id like to know how to call that method from a button or form load, or any other event for that matter.
let's say I have a btnX_click event calling each time when I click btnX:[code] I have menuX menu item and click event for it:[code]I just want every time when menuX item clicked on to do the same thing as btnX control does when clicked.I haven't been programming in VB for ages;Actually haven't been programming at all for a while..But definitely remember writing (calling command event without explicitly clicking on it) this in Delphi; but cannot remember how;
I'm writting a program that will output the column headings of the database onto a form in a label along with a text box for the user to input their own information and a button to add a new record in the database. My problem is I do not know how to refer to the text boxes or how to call the click event from the button that was created at runtime.
I am developing windows application in vb.net.in this project i want to set the Richtextbox height according to the content in that richtextbox. For this i want to call the Richtextbox textchanged event on button click Here is my code but i got error
on button click RichAll_KeyPress(sender, New KeyPressEventArgs(e))
i have two button one is PRINT button another is View Button .. for PRINT button it will print directly from default printer in crystal report in which created at visual basic the VIEW button will go to Crystal report viewer first before print..i need to call out the button click event (in which when user click PRINT or VIEW button)it will trigger to print directly statement in the form load crystal report viewer or if user click View button it will pop up the crystal report viewer UI before print.any examples codes i can do the calling button click event in order to do this ??
i have two button one is PRINT button another is View Button .. for PRINT button it will print directly from default printer in crystal report in which created at visual basic the VIEW button will go to Crystal report viewer first before print now my problems is ..i need to call out the button click event (in which when user click PRINT or VIEW button)it will trigger to print directly statement in the form load crystal report viewer or if user click View button it will pop up the crystal report viewer UI before print .. any examples codes i can do the calling button click event in order to do this ?
I have a popup aspx page that receives data from a parent page gridview Edit click. There is a great deal of parsing of data from parent page to pop up as the data is being translated in pop up, then sent back to parent page to be reassembled in the original text block before update.
When the popup passes the data back or is canceled, the parent page gridview is still in Edit mode.I would like to pass the Cancel or Update button click from the popup to the parent page gridview so it can complete the update or cancel event without asking the user to click the corresponding command button link from the gridview edit mode, to Update or Cancel.
UPDATE: There is also a jquery UIBlocker on the Parent page to prevent the user from returning to the page until the PopUp page processing has been completed. Below is the critical code:
PARENT Page: function parentFunc(a) { // Unblocks on return from popup page. $.unblockUI({});
[code]...
Had a problem with preventing the popup from reloading. So there is an if condition in the load event. A dynamic number of controls are built on the popup as literals. So the Page Init event and Page Load event fire on non Postback to rebuild the controls.
However, I get an error in the call to BeginInvoke (the UpdateApplicationDataUI portion of the delegate is stating "Expression does not produce a value").
Me.Dispatcher.BeginInvoke(Function() New Action(AddressOf UpdateApplicationDataUI))
Here is my case:I have a richtextbox called Rtb1 I have the text property for this control set to "ThreadAmountEdit=[Thread Amount]" This was set through the RichTextBox Tasks function, by clicking the control and selecting the little arrow in the top right corner. In working on my form, I edit the text "[Thread Amount]" of the rich text box to "45". What I need is to be able to reset Rtb1 back to default ("ThreadAmountEdit=[Thread Amount]")on button click.
I've tried: Rtb1.Refresh() which doesn't appear to do anything I've also tried Rtb1.ResetText() which completely clears the textbox.
i want to call a button click event in any other event like this form key down event.if e.control andalso e.keycode=keys.S then savebuttonclick event should be called end if
how do we call double click on single mouse click event? Iam doing this and it's not working.
Private Sub RichTextBox1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles RichTextBox1.MouseClick RichTextBox1_MouseDoubleClick(sender, e) End Sub
I have a program which has a rather complicated component within it. This component has a number of features that all run at once and will cause lag with the main application which isn't acceptable.
To resolve this issue I'd like to run these processes on the component in another thread. I've created a simple test version to work out how I'm going to do this, however I've run into a few problems.[code]...
Is there any issues with this? If I'm kicking off half a dozen threads over and over? ie: I'm not using a system where the parameters will get mixed up/corrupted?
I've looked around, and if this is OK/safe to use, this seems the easiest way to get values/params into a thread.
I have written a program that performs multiple httpwebrequests. It reports in to me by writing to the console. In the past, i have used a backgroundworker for this task, but the code became ugly and bulky. Now, i use threading.thread to start the background process. However, i can't seem to find an explanation on updating the UI from the worker thread.
I've read a lot on delegates, invoke and lambda's, and i just got more confused.
Let's say, in my current program i have this line to be displayed in a textbox on my main form:
I'm looking to pass two or more parameters to a thread in VB 2008.
The following method (modified) works fine without parameters, and my status bar gets updated very cool-y. But I can't seem to make it work with one, two or more parameters.
This is the pseudo code of what I'm thinking should happen when the button is pressed:
Private Sub Btn_Click() Dim evaluator As New Thread(AddressOf Me.testthread(goodList, 1)) evaluator.Start()
I am making scraper that uses url list. But I have no idea how to pass that wanted url from that list to thread that does scraping.
Public Sub init2_check() Dim t(source1.Items.Count()) As Thread For x = 0 To UBound(t) - 1 t(x) = New Thread(AddressOf ScraperDoWork) t(x).IsBackground = True t(x).Start(x) thread.Sleep(100) Next Me.Invoke(New button_Delegate(AddressOf enable2_button), btn_StartScrape) End Sub
DoObj(byval this as string, byval two as string, byval three as string) I'm trying to pass multiple parameters through a thread to this sub. I have tried this:
I have a class that runs as a thread. While the thread is running, I want to call a method in that thread. I do this commonly where a thread calls a method in the GUI with a delegate. But I'm confused how to do this when the called thread is not the GUI and there are no parameters passed to the called method.
What is the best way to pass objects between threads? I would like to create a new thread that creates a new object : Dim myobject as newobject = new newoject Then in my main thread, I would like to use myobject. Ideally I would like to just assign to a global variable but I don't think that is possible. I think I may have to use some form of delegate function (but I think the child thread would need to complete to use a callback). The new thread will not actually end before I need the object reference in the main thread. How should I go about this?
