Format DGV With A BackgroundWorker?
Apr 19, 2011
I have an applictaion with a DGV which has many rows> I need to make different formattings depending on values from some columns. I was thinking to use event CellFormatting but it takes to much time. So, the other solution shoul be to use a backgroundWorker which will take care about formatting dgv.
Unfortunatelly I do not know exactly how to do that. I have tried in many ways but I have received the message:
Cross-thread operation not valid: Control 'StatusStrip1' accessed from a thread other than the thread it was created on.
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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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Apr 2, 2012
i'm in the need to start a backgroundworker inside another one.Now...The first one BGW starts a for cycle, and inside this one there is the second BGW that has to upload an image to a server.The trouble is that, the progress event and the complete event of the internal BGW are never called.
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Feb 1, 2011
I'm returning a database query into a List object and using that list object to fill the X and Y axes of my chart as seen below. (_runData is a "List(of DatabaseTableName)" style Object filled with the results of my query.
Primary_Chart.Series(0).Points.DataBindXY(_runData, "DateTime", _runData, "UPPER_PRESSURE")
My Datetime field is returning as a Serial Number (i.e. 40116.76111) so I want to format the X Axis to display the field more readably. Enter my problem code.
[code].....
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Jun 5, 2011
Im looking for a class or code in VB.NET that can convert a black and white image in JPEG format to a grayscale TIFF format.
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Jun 7, 2011
I'm creating a VB app that uses the Infragistics UltraGrid to display data from 2 JD Edwards files. Before the data is displayed, first I need to convert 2 date fields that are in JD Edwards Julian date format (i.e., 111158 for 6/07/11....the 158th day of this year) to mmddyy format.
MCTS: Web Apps, MCTS: Windows Apps, MCTS: SQL Server 2005, MCP: Windows XP Professional, A+, Network+, Linux+, Security+, Master CIW Designer, SCJP
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Jan 5, 2010
I am using VS 2005 pro and VB.NET. How do you format the DataGridView.DefaultCellStyle.format property for zip codes and phone numbers. I have a zip code and phone number column(s) that I want to be formatted. I have tried a lot of different things:
Zip code: "99999-0000" or "Phone Number: "(999)000-0000" or "(000)000-0000" and the like So far nothing has worked. I can get my date columns formatted correctly, but not these. Can any one give me some examples that work?
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Jul 1, 2011
I need to take a string formatted like '010711' (DDMMYY) and put it into format '01-Jul-11'. Ive thought about doing something like string.toArray and then having some conditionals that format from there but am looking for an easier way.
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May 17, 2012
When retrieving rows from an SQL Server table I use the following code select mydate, Customer, Details from sales where mydatetime >= '" & format (somedate, "MMM d, yyyy h:mm:ss tt") & "'"This works fine unless the clients computers windows Region setting is 'English (New Zealand)'The default time format in windows Region and Language for New Zealand is [code]On computers with this region setting I get an SQL Error 'Conversion failed when converting date and/or time from character string'..If I manually select the other option for AM symbol, PM symbol in Region and Language i.e AM PM the all works fine again..What format string can I use so that above code always works, even if the Region time format is a.m. / p.m.
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Jan 31, 2011
format Gridview's unbound column in 12hr format? i tried the following code, it didnt work.
[Code]...
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Aug 3, 2009
I have a DGV that is getting data from a sql db. The dates in this db are stored as doubles ie 40025.708681
How do I format this column as Date/Time?
I tried but this doesn't seem to work.
how to do this? DGV1.Columns("HostDate").DefaultCellStyle.Format = "d"
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Jan 8, 2010
The bottom line on a dropped-down datetimepicker shows the date different then in the text-part.In my case, the text-part format was yyyy/mm/dd, but the bottom part of the dropped down part stated Today: dd/mm/yyyy, what is probably the format set in the regional settings.
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May 13, 2009
i just started usign Vb two days ago, as it was required for work and i just wondered how to change the format of the total into a money format
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Feb 28, 2008
How to convert jpg format into binary format using VB code ?
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Jan 13, 2010
I want to format the Timespan to have format like this 49 hr 34 mn 20 sec
I used the String format below :
String.Format("{0:00}:{1:00}:{2:00}", theTimeSpan.TotalHours, theTimeSpan.Minutes, theTimeSpan.Seconds)
It formats the Timespan to this format 49:34:20. How can I add hr mn sec to the String.Format above? or there's another easy way?
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Apr 22, 2010
How would I format txtLabel.Text to a currency format?
The text would be 15000000
I would like the text to show $15,000,000
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Feb 16, 2010
How to format drive in FAT 16 format using VB.NET without user interaction?
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Jun 16, 2009
I am using String.Format("{0:C2}", -1234)to format numbers.is always formats the amount to a positive number, while I want it to become $*-*1234
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Jan 6, 2010
In India and other Asian countries money is formatted as following:The first three digits grouped in three then all other digits are grouped in pair of two.eg : 2,54,255.12 5,22,54,255.12 etc string money = String.Format("{0:#,##0.00}", 254255.12);
gives the output 254,255.12
but the output required is 2,54,255.12
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Dec 15, 2009
All of my regional settings in control panel are set to UK but when I retrieve a date from an SQL database (run from my PC) in my program, it appears in the MM-DD-YYYY format rather than the DD-MM-YYYY format that I expect.
After a bit of troubleshooting I found that this is because of the fact that SQL server always stores its dates in that format - so then when my program reads the data from the database it interprets it as being the US format.How can I convert this to UK format bearing in mind I am working with Date objects not strings?
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Feb 25, 2009
How to convert eps format to jpg images in VB.NET?
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Nov 30, 2009
I am trying to do a custom date format in VB.net using Format. The data coming in is "2009-10-03 00:00:00.000" and I want it to be "OCT 03 2009 12:00AM". I am using Format(object, "MON DD YYYY HH:MIAM") and am getting screwy results ... "2006-09-17 00:00:00.000" becomes "9ON DD YYYY 00:9IA9".
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Apr 5, 2010
i see that i can use defaultcellstyle.format to format a column but what if i have an number stored as a string "0511" and i want to display it as a integer "511"
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Jun 21, 2010
good example on backgroundworker control in vb.net for doing some process in background for ex a reading a doc file in textbox by using backgroundworker in vb.net?
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Jan 29, 2011
Is it possible to set a backgroundworker as STA
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Nov 9, 2009
what is this BackgroundWorker and how to use it? Can it be used as a replacement to System.Threading.Thread??
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Sep 8, 2010
I've got a bit of a problem, I'm using a backgroundworker to do a lot of processing and it adds items to a listview with: AddListItem(ListView1, listItem)
Here is the delegate code to send the command to the listview outside of the thread:
Delegate Sub AddListItem_Delegate(ByVal [ListView] As ListView, ByVal [text] As Object)
Private Sub AddListItem(ByVal [ListView] As ListView, ByVal [text] As ListViewItem)
[Code]...
The problem is, as you might imagine, flickering of the listview. Can anyone help me out with a solution to execute a LockWindowUpdate(Me.Handle) command in the backgroundworker? I've tried creating a new delegate but it's not working (errors, I don't understand vb.net enough).
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Mar 11, 2011
I am programming using VB.NET 2005. I am using a BackgroundWorker to load a large list or text file and process it.
Is it possible to use the same background worker to process something else, i.e. to process the text file that was loaded? somthing like
Dim bwkMain as New BackgroundWorker()
If its possible, how do I implement it in the same form as I have already implemented for the first one?
EDIT The question is: is it possible to use the same BackgroundWorker for another task, after it finishes one task?
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Mar 21, 2011
I have limited experience in VB.net and have become stuck. I have tried to search for answers on other threads without success.I have an application that displays real time data.Queries are made to a MySQL database on another PC over the internet every 10 seconds to gather the most recent data.I have done the query within a BackgroundWorker so that the GUI is still responsive while the query is answered.What I've done works great for several hours or maybe for a couple of days but then the DoWork task appears to hang.
The code I'm using is to run the background worker is:
vb
If Not(backgroundWorker1.IsBusy) Then Me.backgroundWorker1.RunWorkerAsync() End If
The backgroundWorker runs just once and there's very little code in the DoWork routine:
vb
Private Sub backgroundWorker1_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles backgroundWorker1.DoWork rs = New
[code].....
Is there anyway I can set up a timeout on the maximum allowed time that the DoWork task can be active for? And if so how would I then go on to stop the backgroundWorker?I understand that CancelAsync isn't going to help as my DoWork task is not repeating as it runs once only, then stops and 10 secs later I run it again.
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Jan 24, 2009
I'm trying to add a backgroundWorker to my application, but I can't find it.I tried looking in the toolbox, but didn't find it. I looked in the Choose items dialog box and it is checked. Tried unchecking and checking it again, no difference.
I tried using Dim worker As System.ComponentModel.BackgroundWorker but get an error:
Type 'System.ComponentModel.BackgroundWorker' is not defined.Is there any way to add it to my program?
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