Troubleshooting Parallel Access To Excel?
Jul 20, 2010
I need to save data in excel workbooks. For that purpose, I call excel, open dozens of workbooks, and save them to disk.Nonetheless, the process is painfully slow, and most cores remain nonworking, so I decided to start many threads, to do it faster, and report progress on a progressbar.
But for some reason, it does not work. Excel hangs and the application breaks, without Visual Studio debugger taking notice.I don't know what is going wrong, or how to debug it.
[Code]...
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Dec 20, 2010
is there any other way to access a serial port using visual basic.net 2010? i followed the steps in this site, How to access serial and parallel ports by using Visual Basic .NET but i just got this output Open the serial port. Send the attention command to the modem. Wait for data to come back to the serial port...
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Jan 16, 2012
I have a service that scans network folders using a parallel.for method. However recently I am finding if I stop the service then while windows says the service is stopped the process is still running in task manager. However it is at 0 cpu and the memory does not change. If I try and end the task (even a force in command prompt) it just says access denied and i have to reboot the server. What would be the best way to make sure everything terminates? I thought of adding a global Boolean that in the stop procedure it turns true and part of my parallel code will check for that and call s.stop.
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Apr 6, 2009
I am attempting to add code to an existing script that will add the log messages to the log txt file in order to determine which loops are running in the script. But all I get is either a blank log file or only one line which I believe is the last loop that ran and not a concatination of the loops that ran which I know is more than one.
How do I create a log file that will continualy grow?
These log calls are placed in each of my loops (I am just showing 2 as an example.)
log ("in loop 1")
log ("in loop 2")
etc
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May 1, 2009
I have a question regarding a null value which I am not supposed to get in VB. Here is my code.
Public Class SelectDemo
Private Sub lstData_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lstData.SelectedIndexChanged
[code].....
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May 1, 2009
I have a question regarding a null value which I am not supposed to get in VB. Here is my code. My problem is that I don't know why when I select Bryan in the list box, I get a statement like this: "Bryan's favorite color is _________ empty(null value).
Here is my
Public Class SelectDemo
Private Sub lstData_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lstData.SelectedIndexChanged
'Declare variables
[code]....
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Sep 23, 2011
I've installed Mic Visual Studio 2008 few days ago. At first, Mic Visual Basic functions very well. But now, i can only open the program, but not the form. When I wants to Open>New Project, something pops out shows that "No Visual Basic Template can be found. See the Application Log in EventViewer for more details."
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Jun 17, 2011
Background: I have an application that loads marketing companies into a drop down list if the currently logged in user is a member of that marketing group in active directory. The Group ACOMP_USER_BIG is compared to MarketingCompanyShortName Big in the database records via a web service. Problem: I have 3 Newly added AD Groups that won't load in production but load fine in the drop down on my local dev server. The deployment guy already tried doing an IISReset and that didnt fix the issue. All the AD groups have read access only and no write access. We need to find out more information on why the marketing company AD groups are not loading. How do I get the groups to load correctly or prove that the problem is not a programming issue and a deployment or AD issue? H*ere's the VB.NET Code behind that populates the marketing company drop down list.
[code]...
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Feb 25, 2010
I need to create an excel file from the database records. I fetched and put the data in an excel file and tried to save that file as follows.
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Jan 24, 2009
I'm coming to the conclusion that the things I want to do in a database are better done if I run a conversion code from Excel to Access, do mighty things in Access, then have the option of converting back to Excel to distribute elsewhere. I'm already familiar with using Access and the code I keep finding in threads almost always refers to .mdb files. Below is a conversion that does not seem to work (button2). I'm trying to do this through ADO with OleDb connections. If I can convert to Access much will make sense.
Public Class Form1
Private Adapter As New OleDb.OleDbDataAdapter
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Close()
[CODE]....................
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Jan 31, 2011
Am devoloping a windows form application which need to retreive a particular column from Excel sheet and i want to display that data in a dropdown menu.
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Oct 15, 2009
Need to VB(QTP) Script code for converting an Excel sheet to an access database table. Is there any way to import the selected columns to in to the access database.
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Jun 30, 2010
i have started to code something that will export an access query to an excel spreadsheet. does anybody know a clean easy way to do this?
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Jun 12, 2009
I need a code to export data from Ms-access database to Ms-Excel sheet using VB.NET
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Nov 19, 2010
How can i export database from access2007 to excel2007 using vb.net express that INCLUDES the FIELD NAME .
I know how to export it to excel, but it does not include the FIELD NamE..
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Jun 28, 2010
I will continue to work on it but i'm wondering how to insert into when the excel sheet does not have a header with field names.
Using excelConnection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & TextBoxFileName.Text & ";Extended Properties=""Excel 8.0;HDR=No;IMEX=1"";")
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May 11, 2011
Using VB 2010, i want to input data from vb and save it to access or excel. And then use data from ms files on another form in this vb project. How can I accomplish this?
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Jul 8, 2011
i have an excel file which looks like below this will be saved in my tblemployee which also have the same field how to do it
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Oct 9, 2009
I have to generate about 800 excel files from an access database.
For the first 10-15 of them it's working nice, a few seconds/excel file but it's constantly taking longer, at the 150th excel file it's taking 10 minutes.
Here is my code:
It's doing this for each nrliste in the access table (about 800 of them)
Dim lista = From ls In Liste _
Where ls!Concatenare = nrliste(i) _
Select ls
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Mar 11, 2010
with .net 2005 + access -> data to excel
i have transferred the data from access to excel now i want to perform the subtotal function.
sub performSubtotal()
dim dsx() as string
dsx = getenum(my_dataset_columncount)[code].....
(1) microsoft excel can not determine the row in your list or selection contains column labels which are required for this command
+ other 3 items.what wrong i am doing here .i am suspecting the way i passing the column numbers in to the subtotal function
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Oct 12, 2010
In vb.net, I created one upload button in windows form. When I click that button, I want to upload csv file to MS Access database.
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Aug 13, 2008
In vb.net, I created one upload button in windows form. When I click that button, I want to upload csv file to MS Access database
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Jun 2, 2011
I Have code for display excel data in datagriedview can anyone suggest me how i can export this data to ms-access tables.
Try
Dim MyConnection As System.Data.OleDb.OleDbConnection
Dim DtSet As System.Data.DataSet
[code]......
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Nov 29, 2011
Im looking to set up a VB.Net application that allows me automatically import files from Excel into an Access Database. Can anyone point me in the right direction? I will be importing files regularly so I would like to make an application to simplify the process. Would I be better off creating a Macro that I can reuse in Access or a VBA or?
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Jul 15, 2010
I am trying to duplicate the Match function in excel for use in Access. Public Function Match(T() As Double, TTM As Double) As Double ReDim T(LBound(T) To UBound(T)) As Double
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Jun 27, 2012
I have a query being created using oledb from access and need to get the information to an already existing excel spread sheet. I am using VS 2010 with vb.net, access and excel are 2010. I have been running in circles for the last two days and cannot figure out how to get the data from a datareader into excel. This is a vb.net console app, so no web tables or grids can be used.
Dim conn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:PureshowPureshow.mdb;")
Dim cmd As New OleDb.OleDbCommand("SELECT PWTC08.Lot AS LotID, PWTC08.Reg AS OfficialID FROM ((PWTC08 INNER JOIN SWTC08 ON cint(LEFT(PWTC08.Lot,
[Code]....
I am almost to the point of just outputting to a CSV and telling the user to import into excel each time. I can export to excel if I put it in a webform, but I cannot figure out how to do using a console app.
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Sep 19, 2011
The backend uses Microsoft SQL Server 2000 runtime engine with an MSDE database engine. The frontend however is built with Microsoft VB.Net and the dotnet framework. I'm not sure how this changes things when trying to extract the tables. I've found the folders where SQL-notepad looking files are contained but am not sure what my next step should be. TBH i dont know what version of Microsoft VB.Net framework is used but the system is quite old and was made in 2001. If you haven't noticed from my poor phrasing i'm a bit of a newb when it comes to programming. If there is a particular programming code i have to put in i wouldn't really know where to put it.
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Sep 19, 2011
i've started work at this small charity and they need me to extract the tables and data from an old buggy system and create a new Access system but i'm having trouble extractig the data.The backend uses Microsoft SQL Server 2000 runtime engine with an MSDE database engine. The frontend however is built with Microsoft VB.Net and the dotnet framework. I'm not sure how this changes things when trying to extract the tables. I've found the folders where SQL-notepad looking files are contained but am not sure what my next step should be. TBH i dont know what version of Microsoft VB.Net framework is used but the system is quite old and was made in 2001.
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Oct 21, 2009
I wont to export query results from Access to Excel.From my Access app i execute this function
Public Sub qExcel(pQuery As String)
DoCmd.Hourglass True
Dim dbs As ADODB.Connection[code]......
Everything is OK when I run this function for the first time. But when I try to run it the second time I get method range of object _global failed error.Also I've noticed that first execution creates excel process that is in my process list even after I close excel. Second execution creates second process and after error when I close excel both processes are gone.Third execution creates no error fourth creates errors .... and so on
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Jun 14, 2010
What I need to get done here is not a GUI, like the SQL Import and Export Wizard, which can be run from the SQL (2000) Enterprise Manager only, but a code that I can run from within the Visual Basic For Applications IDE from Microsoft Excel 2003, maybe in the form of a module, class or userform or a combination of all three. The best that I have come across so far, was a class that first checks if the worksheet is in a database formattable condition, then creates the database, if it does not exist, a table and then transfers the data from the worksheet to the table.
I have tried the Access 2003 TransferSpreadsheet method, but that does not solve my purpose, because I want to move the data from Excel to Access, starting from the creation of the database itself.
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