Here's the routine:
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The problem - The btnPause doesn't pop up until AFTER the thread sleeps, but the other two buttons works correctly. What the heck is going on? Here, I'm using the Sleep to simulate doing external events yet to be programmed.
I want to create a daemon thread that sleeps for 30 seconds and looks in a directory for a database then opens the database.
View 4 RepliesI use Visual Studio 2003, VB.net, NetFramework 1.4 and Windows XP I have been using the following Code Snippet for a number of years in both Web Services and Windows Applications. However suddenly around the 29th September 2010 it has stopped sending E-Mails from both Web Services and Windows Applications. The same problem has happened not only to my own Network but on two other Networks, one using XP as its Server and the other using Server 2003. All 3 of these are using different ISPs.
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Im trying to do this
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But it will just skip to the last status (Label3.Text = "Status: Welcome")
I have trouble showing a panel (ShippingPanel) in my program.
In MainForm_Load I set all forms to not visible
Private Sub MainForm_Load(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'WHMDataSet.SupplierOrders' table. You can move, or remove it, as needed.
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The strange thing is that the Msgbox statement returns false.
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.
How to make a link button visible after another button has been clicked in asp.net(vb) in button_click()
it says error as "Object reference not set to an instance of an object."
i've done this in my code
Protected Sub InsertButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim receipt As LinkButton = FormView1.FindControl("LinkButton1")
' receipt.Enabled = "true"
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Why this: System.Threading.Thread.CurrentThread.Priority = System.Threading.ThreadPriority.Highest doesn't work? I ran my app and checked it using the task manager process tab. It was checked as normal.
View 8 Repliesi am trying to use the sleep command in vb 2008 multiple times to constantly change back color but am told, Unable to load DLL 'Kernel 32': The specified module could not be found. (Exception from HRESULT: 0x8007007E). i tried it with another program and one sleep(1000) and it worked so is there a way to use this multiple times or any other command.ian hendry
View 7 RepliesI was looking for a solution to run a lengthy job (looking for files on the fixed drives) withouth freezing the UI, and saw that using a BackGroundWorker control is the recommended solution.
Problem is, I don't see its ProgressChange event being triggered:
Imports System.IO Imports System.Text.RegularExpressions
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Button1.Enabled = False
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I have a problem with this program
Form1.vb
Imports System.ComponentModel<br/><br/>Public Class Form1
Public Delegate Sub updatePB(ByVal value As Integer)
Private bgworker As BackgroundWorker = New BackgroundWorker
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Is it possible to start a timer on a separate thread so it doesn't block the user interface, or do I have to make a thread that I call from the timer?
View 2 RepliesMy module won't run, it can't find the project or library, and highlights: the Date function in: MsgBox (Date).This is happening to several VBA functions, but this is the first one.I have all the libraries referenced that I think I need, especially the Visual Basic for Applications checked.There is a MISSING: Office12 library, but the Date function is part of the VBA library, so I don't think this should be the issue.
View 2 RepliesI had followed the Example on mulit-thread in MSDN, but add a loop in my implementation. But seems like the multi-thread is not working.
Private
Sub
SboE_Start_Btn_Click(ByVal
sender As
System.Object,
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I have a class that creates a ticker whose tick event checks somes stuff for me. If I instantiate the object and call the methods it works just fine. however if I create a new thread and call the function then the tick event doesnt get called for some reason.
Calling the object/creating thread:
Dim checkObj = New checkOutLook
checkObj.delForm = Me
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why it would have problems handling an even tick on a separate thread? I even added a MessageBox output in the ticker to be able to check that its working properly
I am developing a Winform Program in visual basic and I am using Access Tables. I want to use a bindingsource filter to do a search on Stock descriptions. I am using this but it doesn't seem to be working
Me.StockBindingSource.Filter = "ITEMNAME LIKE '%" & SearchTextBox.Text & "%' AND [Supplier1 Price] <> 0 AND [Supplier2 Price] <> 0 AND [Supplier3 Price] <> 0"
What's happening is that I am only seeing products where all 3 suppliers have a price listed that isn't 0. (Products have a zero price when it becomes discontinued or supplier doesn't sell that product but we may have purchasing history against it so it can't be deleted). Therefore we do end up with products where all 3 suppliers have a zero cost. These are the products I don't want this search to return.
I have built a Wpf-ControLibrary-Project to put some Controls there. In one Control i need to get some informations about assambly, Version and directory path.in the past i have done this one:
Dim msg As String
msg = "AssemblyName: " & My.Application.Info.AssemblyName & Environment.NewLine
msg &= "Version: " & My.Application.Info.Version.ToString & Environment.NewLine
msg &= "DirectoryPath: " & My.Application.Info.DirectoryPath
MsgBox(msg)
but this doesnt working anymore. I get an Error which told me that Application isn't Party of the My Namespace.
I understand the properties to change a button from visible to invisible, but I need to be able to have two buttons alternate visibility when the first button is clicked.It's for a game. The first button is to "Begin Game" and on open, the invisible button that sits over it is called "Begin Again" which I would like to only appear once the Begin Game button has already been clicked. This would then trigger the "Begin Game" to become invisible.
View 3 RepliesI just pasted a datagridview on the form , added a button and named its text as "ADD". I even changed the UseColumnTextForButton
property to true . But when the form loads the button text is not displaying .
I have 2 group oxes of equal size on top of each other. I would like to click a button and show 1 and hide the rest. but even when i just use ''grpBxSalads.Visible = True, for the second button, it fails to show the group box. [Code]
View 4 RepliesWell to simplify it, whenever I use sendkeys from a background thread it just doesn't work. I even created a textbox, button, and backgroundworker with the following code:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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I have a background thread that calls a subroutine with the following inside it. I'm assuming the thread is messing with this part since it doesn't return anything.
Dim ctl As Control = Me.GetNextControl(Me, True)
Do Until ctl Is Nothing
If TypeOf ctl Is TextBox And ctl.Enabled = True And ctl.Tag <= 36 Then
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I just called the sub that this is in without using the thread and it works fine, so it is the thread. How can I get this working inside a background thread?
The below query fails with Null Reference Exception when there are elements in BOMIDs where MatID property is nothing.I thought the 'x.MatID isnot Nothing AndAlso' would prevent the x.MatID.Process part of the where from being executed. There are a couple elements in the BOMIDs collection that where MatID is nothing.
From x In BOMIDs _
Group Join y As PurchasedProcess In SpecialProcesses _
On x.MatID.PurchasedProcess Equals y.Name _
Into G = Group _
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I have used persistance class and used following LINQ query.[code]but it throws an error saying. "Specified Method is not Supported".How can i get data from two table using XPO Persistance Class?
View 1 RepliesI'm very new to VB, so I was in the very first tutorial, it has me play a sound file. So I put that in, ran it, and it came back with an error saying "system cannot find this file." I guess I'm not terribly surprised, since the file they gave has no C: or anything like that. What I want to do now is play my very own sound file, but I don't want to go through the whole C:Documents and Settings... thing, so is there a way I can put my own sound file in the project directory and say something like %ProjectDir%/sounds/mysound.wav?
View 13 RepliesButton.performclick not work when it visible = false?
View 4 RepliesMy Com1.text has nothing in it but yet the button1 is still visible when it should be false and not showing. This worked fine in vb6 using command.caption.[code]
View 14 RepliesI have a graphical button named ba1(blue arrow 1), ba2, ba3, etc to ba8 which coincides with questions on a sig pad 1-Qmax(=8) so that the clinician can see which question the patient is answering at the time.I need this For statement to work but it is giving me syntax errors and nothing much else. I am guessing it doesn't like placing a string and integer together. I have tried turning the int into a str and it balks.[code].....
View 6 RepliesI'm trying to create a CBT hook to an application, in this case Notepad.
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EDIT: I have also tried it on a Windows XP system now, and it doesn't work there either.
I am using Visual Studio 2010 and have been slowly getting into threading. My current project has a form with a button that in turn starts two threads. The form itself has two labels on it that are used to display the progress of the computations. Each thread has a delegate defined to change the value of the respective label (as the labels are not defined in the thread, but on the form itself). The threads call subs from a separate class. All of the calculations work flawlessly. My problem is that the labels do not visually update. Through use of message boxes at the end of each loop, I know that the label text property is, indeed, being changed, but it is not actually refreshing and updating on screen.
My delegate code is as follows (I grabbed this code off of another forum where people had the same issue - it seemed to work for them, but not for me):
Private Delegate Sub UpdatePMLabelTextDelegate(ByVal s As String)
Private Sub UpdatePMLabelText(ByVal s As String)
' Are we in the same thread as the label itself?
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