I've got a form that has a ProgressBar on it. The Style is set to Marquee. In the Form.Shown event handler, I call BackgroundWorker. RunWorkerAsync(). In the old version, while this is occurring in the background, the ProgressBar is scrolling, which is exactly what I want.I copied over not only the code from within the file (i.e., the logic code) but also the code from the designer file. So, from what I can tell, there should be NOTHING different between the two files. However, in the new version, the marquee scroll doesn't occur.
I'm using Windows XP and VB.net 2005. I've search for information on how to use the BackgroundWorker to display a ProgressBar during a process and thought I had it correct, but appearently I don't - the bar never shows, much less moves. My goal is to have a Marquee Style progress bar display while my code is looping thru a query result populating a datatable that a DataGridView is binded. Here is my code.
I want to create a custom, good looking, marquee progressbar for my splash screen. I found a good desgin and i am trying to duplicate it, but i am not very good with System.Drawing. I would like to create the following progressbar[url]...
i have a standard login form that allows the user to enter username and password and click OK or cancel. I have a progress bar called pbLaunch with the visible property set to false and the animation set to marquee. when the user clicks OK i would like to run a separate thread called bgwProgress that makes the progress bar visible and fires up the marquee just to show that something is happening while form1 loads up.....so far i'm stuckn the ok click event i have the following:
Try Dim bgwProgress As New System.ComponentModel.BackgroundWorker bgwProgress.WorkerSupportsCancellation = True
I have the following sub that displays the progress (the Animation speed is 50 - but I've tried with other values)
[Code]...
I should mention that the control is created dynamically and placed on a dynamically created TabPage that in turn is added to the main tab control that is on the static form (Form1) that is refreshed - but I do believe that 'Refresh' should ripple though to all sub controls?
I have to write a program that retrieve record from database, but everytime the screen will look like getting hang when getting large row record.I using the backgroundworker to prevent screen hang when retrieving record from database but why my progress not working when in progress? It only will show when the transaction done..
how to load data into datagridview using backgroundworker & progressbar?Let's say i have a report that shows some statistics, or has 100 000 of rows that should be displayed and during the load i would like to show the data that is already loaded and not to frees the form.Same example like in SQL when you perform a select command from a table which has 100 000 of rows and while loading the data, the grid is already filled up and progressbar is shown at the left buttom side.
I am trying to use the background worker to keep my application responsive during the calculations it does. All I need is one to calculate and the other to count time which I use a timer for. But when I try to use a progress bar as well as I want to see the progress it gives me an InvalidOperationException: Cross-thread operation not valid: Control 'ProgressBar1' accessed from a thread other than the thread it was created on. I need this to work, how could I use a component from outside the background worker? This is the background worker bit:
[Code] This is run from inside a backgroundworker. It throws an error, Cross-thread operation not valid: Control 'pbUpload' accessed from a thread other than the thread it was created on. I have read and read and searched and basically come to the conclusion I am going to have to invoke the command but this is new area for me.
I have a class that downloads a specific file from the net.This class uses a BackgroundWorker. I tried to implement kleinma's Download Files From Web With Progressbar [URL]../showthread.php?t=396260), but I'm having difficulties making it work. I'm including a test project, so if someone is willing to take a look at it, it would be great .
The part I'm having trouble with is updating the progressbar and progress label. The errormessage I receive is in Norwegian, but it has something to do with threads. I suppose I should use Invoke or something, but I don't know where to start..
1) I am trying to use background worker to download a large file and update a progress bar to reflect the changes as the large 5GB file is being downloaded, and also update percentage completed to the label.text(lblInfo).
2) As I was goggling I came across some info that a web client is needed to calculate the maximum size of the file and divide by 100 and you can stream it down with the web client. Reading it is one thing, implementing it is another as I spent week trying to get it to work.
UCPocoAPoco Imports System Imports System.IO Imports System.Diagnostics
From time to time, I see people asking about how to make marquee text. I recently wrote a marquee class I figured I would share, in case anyone finds this useful.
Heres The Class:
Public Class Marquee Private _CurrentText As String = "Paul's Custom Marquee" Private _text As String = "Paul's Custom Marquee"
Is it possible to have the title bar of your application be a marquee? The only way I know of to make a marquee currently is this:
Public Class Form1 Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick Label1.Left = Label1.Left - 10
[CODE]...
All that does is make "Label1" move from right to left across the form.. is having a marquee in the title bar possible?
I wanted a ProgressBarStyle.Marquee animation while a query is running. I don't want the user to think the application is locked up. it's really not progress just MarqueeAnimation. the issue I have is it's not running as a thread or in the background.
Private Sub ButtonExcute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonExcute.Click ProgressBar1.Style = ProgressBarStyle.Marquee ProgressBar1.MarqueeAnimationSpeed = 60 ProgressBar1.Refresh()
How to add scroll delay in this coding for marquee ? It will not scroll till the last character, it will disappear when first character in literal1 will touch the left side ... i want it will scroll till last ..character
I'm coding in VB.Net 2010. What's the most efficient way to create a horizontal scroller (i.e., marquee)? I've found some dead threads and ways to do it in older versions of VB, but I'm not finding anything particularly recent....
There is a question that I have from YEARS after working with DotNetBar Components that How do you set the Marquee style of a normal progress bar on the circular one? The circular progress bar from DotNetBar, i want to be clear.There is no "Style" Property and now I really need to know it for a project I'm doing now
I was wondering if there was a way to get the marquee of a progress bar to change direction when the marquee gets to the end of the progress bar and vice versahere is a small diagram to show you what i mean[---][*--][-*-][--*][-*-][*--][---] = progress bar* = marquee
I am successfully trying to send an email message through my windows form. The only problem is when i click the button to send mail it is not showing the prograssbar. It shows after a delay or sometimes doesn't show at all.Is it due to the event handler? I have no clue and all i need to first show is the progressbar when the send button is clicked and then when sending message is successful or unsuccessful then hide progressbar and display the Txtmessage.text.
Public Sub SendEmail() ProgressBar1.Visible = True Dim client As New SmtpClient() Dim sendTo As New MailAddress(To.Text)
I need help with the progress bar control. I can only get it to show or display in the Marquee mode, even though I have tried setting it to Continuous and Blocks. I have tried setting it programmatically at run time and in the IDE properties. I get the Marquee style every time no matter what I do. What am I missing here? I must be doing something wrong somewhere!Paul Abell
I need to make a marquee control in vb.net, but I need it to run completely in a different thread, but I can't update the UI of the control outside the main thread.
Intent: To teach the user how to create a control that scrolls text at an adjustable speed across the control.What you'll need:Visual Studio.NET (2002 or 2003) - The version I built this with is 200325 Minutes of free timeI don't remember what prompted me to create this control, except that I was sitting at my desk one day and thought to myself?
1. First open the Visual Studio IDE.
2. Select 'New Project'.
3. From the project languages, select 'Visual Basic'.
4. From the project types, select 'Windows Control Library'.
5.Once the initial project has finished loading there's a couple of things that you may want to do first. The first one being, change the control name to something that means something. "UserControl1" just won't do, so in the 'Solution Explorer' right click on the "UserControl1.vb" file and click 'Rename'. Without removing the '.vb' file extension, type the name of the control. In this case lets call it 'ScrollingMarquee.vb'.
6. Now back to the control design area. Add a timer control to your project from the toolbox. Set the enabled property to 'True' and set the interval to 100. Right click on the control area (the actual control itself, not the timer) and click on 'View Code'. This will take you to the code area of project.
7. Enter the code as is written displayed below.
Code:Imports System.DrawingImports System.Drawing.Drawing2DImports System.ComponentModel Public Class ScrollingMarque Inherits System.Windows.Forms.UserControl #Region " Windows Form Designer generated code "
[code]....
Just want to make sure that each time we move the control or resize it,'it re-renders correctly.Invalidate()End SubEnd Class8.Next select 'Build -> Build ScrollingMarquee'.9. Once you have any bugs worked out (there shouldn't be any, but in case there are), you can change the build mode to release and rebuild the control for use in your projects.
