Fill Datagridview Using Backgroundworker & Progressbar?
Aug 23, 2010
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.
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Apr 7, 2008
how to safely load a datagridview via a backgroundworker while showing progressbar feedback ? My data is coming from an access mdb.
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Nov 26, 2009
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.
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Aug 31, 2009
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..
[Code]...
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Nov 11, 2011
I just have 1 listbox which got link in there. How can I download each file using background_worker + progressbar(current file download)?
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Feb 22, 2011
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]....
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Sep 24, 2009
I have the download progress bar working in my program but I can't find any working code to determine the amount uploaded. here is my upload code
[code]...
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Aug 15, 2011
I have a progressbar on my form that is not getting updated.
When the Send Email button is clicked I do this:
Public Sub SendMail()
If CheckSettings() = False Then Exit Sub
BackUpEbillFile()
LockForm(True)
StatusBars(1, "Sending emails...")
[Code]...
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Aug 8, 2009
[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.
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Sep 14, 2010
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.
[Code]...
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Oct 14, 2009
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..
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Mar 10, 2012
I place some code below to simplify the process.
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
[code]....
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Oct 3, 2009
what do i need for the progressbar to fill when the webrowser is completed.[code]
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Jul 10, 2010
I've added a Data Source to my project and a table from that Database (SQL 2005)
It is a rather large table and takes a LONG time to load the form. I was thinking of loading the auto-generated "Fill" statement in a Backgroundworker, but it doesn't seem to be doing anything. I have the Fill statement in the DoWork event, but it never "finishes" it seems. My BindingNavigator stays at 0.
I looked at jmc's sig link and everywhere I look, it seems like I'm going to have to iterate one at a time, but how can I do this for a bound datasource?
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Feb 22, 2012
I am using VBNET2008 to develop a Application using FORM and the Logic using FOR LOOP. Within FOR LOOP logic to fill the Form TextBox from DataSet and also to Fill ProgressBar Progress. Apparently Within the FOR LOOP the FORM TextBox and ProgressBar1 is not filled.
Here are the overall Coding
Private Sub FCountTotalOrderID()
'--- retrieve OrderID Row count from Table ---
Dim strsql As String
[Code].....
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Dec 12, 2011
my query is too long and retrive larg data.
and myform hanged when query is process.
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Jan 24, 2012
So im trying to fill a combo box with data from a database but depending on how much a pregressbar is filled THis is what im trying:
Private Sub Form5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Form1.ProgressBar9.Value <= 10 Then
Me.Level1TableAdapter.Fill(Me.CTDBDataSet1.Level1)
[code]....
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Sep 23, 2009
I just want to display data of a single column from an oracle table into a datagridview or a listbox for readonly with no requirements to make changes to it. Simply display the information.What is the best way forward... To used DATAADAPTER or DATAREADER.s DATAGRIDVIEW SLOWER TO FILL THAN a LISTBOX.i am using the following code to fill datatgridview but for some odd reasons at time it is slow to display the data. I want to use listbox instead
Dim ds As New DataSet
Dim adp As OracleDataAdapter
adp = New OracleDataAdapter("select customer_name from customers")
[code].....
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May 20, 2011
I'm trying to paint a cell indicating the progress with number and drawing a background like a progress bar. When I change the cell value it changes the background ok but thnumber looks awfull, only when the percentage bar reaches the number it looks ok, also if i minimisize the form and maximize it, all controls look with the
Private Sub dgLine_CellPainting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellPaintingEventArgs) Handles dgLine.CellPainting
[code]....
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Jun 27, 2011
I am binding the data to datagridview using dataset ( datagridview.datasource=ds.table(0) ).but i want to show the loading status of the datagridview in progressbar.
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Jul 13, 2011
I have 2 forms (let's call them form1 and form2). Form1 has a datagridview that is populated by a combobox, when the selectedindex changes the datagridview is re-populated. Form2 is a small blank form with just a progressbar on it (progressbar1). Right now if I make Form2 visible when selectedindex is changed the marquee on the progressbar doesn't really move and Form1 is essentially "locked up" until the records are done loading into the datagridview.
[Code]....
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Mar 12, 2011
I create more then 10 columns in Access 2010 and I have a lot of rows. I write code already to load data to my datagridview, but I want to know to how to load data with progressbar untill finish. *If loading data does not finish the progressbar does not finish,too.
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Mar 9, 2011
I've got a VB2008 application that can potentially generate a table with up to 540 columns. The table is then used as the DataSource for a DataGridView. With column counts in the hundreds the processing time can by over a minute. With all this in single threaded Form code the UI locks up until the DataGridView is loaded. I've taken time stamps of the process to find out where the majority of time is spent.
[Code]...
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Nov 3, 2010
i have a form and a datagridview in form i work with backgroundworker in here i want invisible a column in my datagrid i use delegate for it but i have error
Delegate
Sub SetDgvLastIssuedCard_Columns_Delegate(ByVal
[DataGridView] As DataGridView,
[code]....
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Jan 9, 2009
What is the best way of quickly loading a datagridview with thumbnails of images and filenames/paths found within a particular folder using a backgroundworker without affecting UI performance ?
While loading, I'd like to continuously filter the dgv's image column through a textbox to display results as the user is typing.
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Dec 14, 2009
in my button click event i ececure
If BackgroundWorker4.IsBusy Then
BackgroundWorker1.CancelAsync()
End If[code]....
after proceess completed if press the button again.i got the following error msg
This BackgroundWorker is currently busy and cannot run multiple tasks concurrently.
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Mar 12, 2010
I am trying to fill my DataGridView using a date for my parameter. My first problem was in my code where I would get the common error message of Too many arguments to public overrides overloadable. I solved that error message by going into the dataset designer, selecting the query and adding RegDate as a parameter. Now my problem is that I will enter a date in my tool strip text box click the button and still get my data grid view filled with all the data.
Try
Dim RegDate As Date = CDate(RegDateToolStripTextBox.Text)
Me.PatientsTableAdapter.FillByDate(Me.Database1DataSet.Patients, RegDate)
[code]....
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Nov 24, 2011
Is it possible todo directly fill data into a DataGridView.
I want when i select a cell of the DatagridView, with the right button of the mouse, that i get a menu with 4 opties of colors.
When i do a selection, of 1 color from the menu, then change the cell into that color, en automatically save the tabel of the database.
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Apr 24, 2012
I have a datagridview which I have set up with the Form Designer and created 2 columns and set header names and column widths. When I try and fill the datgridview instead of filling the columns I have created two additional columns are appended to the right of the existing ones and the additional ones are populated leaving thje ones I created blank.[code]...
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Aug 14, 2011
I want to fill a DataGridView with data returned from a SQL. So here is my code [I provided cause some people may think I'm asking for help before trying myself]
I want the DataGridView to be filled by a data from SQL not to show all the records.[code]...
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