Writing Excel Files Using Vb?

Jun 15, 2009

how to write and overwrite a excel files?write is like create a new excel files and insert data to it using vboverwrite is writing data to the excel file which overwrite the old


Merge Multiple Excel Files Into One Excel File And It Works For 3 Source Files But Its Not Working If Workbook With Worksheet Count Is > 3?

Aug 18, 2011

I'm trying to copy multiple excel source files into one excel file. My current code is working only for 3 source files..If more than 3 files are there, it doesn't copy the data but creates blank work sheet in the output excel file. Lets say I have a source folder with 5 excel files. Each workbook contains one worksheet with data. It copies upto 3 worksheets along withdata into output excel file.

Lets say excel1 contains A as work sheet, excel2 containsB as work sheet,excel3 contains Cas work sheet,excel4 containsD as work sheet,excel5 containsE as work sheet.Now my output excel file should look like..OutputExcel with A, B, C, D, E along with respective data.But my current code is giving output as A,B,C worksheets along with respective data but its creating blank sheet1,sheet2 in place of D & E.

SSIS Script Task Vb.Net Code:

Sub Main()
Dim filePath
String =


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VS2010 .NET And Windows 7 Access Denied On Writing To Or Creating Files In Project Files Folder?

May 22, 2012

Ok I know this question has been asked to death but I still have not seen a good answer. I have created an application in VS2010 using VB.NET. In my application I have an error log that is an XML file located in the Public gstLocalErrorLogLocation As String = Application.StartupPath & "ErrorLog"that gets written to in the event of an error so I can trouble shoot application easier. My application also downloadsfiles from our FTP site and puts the files in Public gstLocalDownloadLocation As String = Application.StartupPath & "download"So I have files that get read and written to as well and created and deleted all in the Application.StartupPath which is either "c:Program Files(Application Directory)(Some Directory)(Some File)" or "c:Program Files (x86)(Application Directory)(Some Directory)(Some File)" depending on 32bit or 64bit Windows 7.

After creating the setup I install it on my test machine that have both Windows 7 32bit and 64bit.Everything in the application works great till I have to write to, delete or creat a file in those directories above. I know it is an access issue and the UAC. This will get installed on numerous systems so the options I have seen to change file or folder permission on the computers manually is not an option.What has to happen is after I install the application it just works like when you install it on XP. Some post have suggested that you us a user with administrator privilages or group which is all fine and dandy but the user I have used to test the application has all of that.

So what I am asking is how do you create an application with VS2010 in VB.NET that after creating a setup package and installing on Windows 7 will just work with out "Access to the path c:Program Files(Application Directory)(Some Directory)(Some File) is denied." If I have to install this on 100 Windows 7 computers it has to be a concreate no manually doing anything just install andwork like when we installed on XP.

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Writing Excel Formula Using .net?

Jun 21, 2011

I want to write a formula to SUM from column B4 to M4, this should be done using vb.net programming.

I tried using the following stuff:

oXLWsheet.Range(4, 14).Formula = "=SUM(oXLWsheet!$B$4:M$4)"

Nothing is working for me. I'm getting the following error when I run the code:

"Exception from HRESULT: 0x800A03EC".

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Writing To Excel 2007 Using VB?

Oct 20, 2010

I am creating a new spreadsheet from existin data. The new spreadsheet size changes based on the input data. I am using lastrow, and lastcolumn to format newvalid cell raqnge. I also need to entera predefined statement in column A of the thelast row.

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Error When Writing To Excel Worksheet

Feb 8, 2011

I am getting an error message when I am attempting to write to an excel worksheet using VB.net 2005

Operation must use an updateable query I have gone thru the S/O search results[URL]..My code is:


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Getting Started With Writing A File To Excel In VB?

Feb 4, 2012

I have data that I want to have written into a Microsoft Excel File.I found the following question, but this is using a predefined name where as I want to use a Save Command Window on a menu bar.Coding for Excel sheet in Visual Basic 6 Essentially I have two columns of data, Participant Name & Time In Ring, I want to cycle through an array (I suppose) and have each item on its own line.

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Looping For Iterations And Excel Writing

Oct 20, 2011

I need to loop the "buttonOneClick for one second iterations. The program will send a "P" character, wait one second, send a p, wait one second, etc... Also I need to write the information it receives to an excel spreadsheet.

Here's what I have:
Public Class Form2
Dim buttonOnePush As Boolean = False
Dim buttonTwoPush As Boolean = False
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
' Send strings to a serial port.
[Code] .....

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Writing Data To Excel Continously?

Aug 19, 2011

I want to import my data, which I receive over USB (every second), to an Excel sheet. Thing is, I want to open only one Excel file and write everything to this one file, and by pressing a "STOP" button, data reception will be canceled and data in the Excel file should be saved and Excel file should close right after that. Here my code,

Dim excel_cnt as Integer<br/>Dim sv_var as Integer = 0<br/><br/>Sub write_to_excel()
Dim xl As New Excel.Application


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Writing To Excel An Word 2007

Aug 23, 2010

I'm developing a program that handles money, and there is a pre-made excel spreadsheet that I am to be transfering data into specific cells. How can I go about telling my program to write specifc data into specific cell numer in excel? Also, how can I get my program to write into specific areas of a MS Word Template (my program will generate letter with the same template just different names/addresses/valus)?

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Writing To Specific Cell In Excel?

May 26, 2009

If you know the cell number that you need to write to in excel, say E3 what would you use for the VB2005 code? I can't seem to find an example on this!

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Reading Excel Files In Vb.net Leaves Excel Process Hanging?

Oct 23, 2009

The following code works fine but seems to leave instances of excel.exe running in the background. How do I go about closing out this sub properly?

Private Sub ReadExcel(ByVal childform As Fone_Builder_Delux.frmData, ByVal FileName As String)
' In progress
childform.sampleloaded = False


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VS 2008 C# To VB Conversion Errors-Generate Excel Files Not Using Ms Excel?

Feb 12, 2012

[URL]..a good way to create Excel files without using Ms Excel,but this is C# source code,I used [URL]..to convert from C# to VB.NET,but after conversion There are some strange errors :

Error21Too many characters in character literalc:BBBXLSExportDemoXLSExportDemoExcelDocument.vb1625XLSExportDemo
Error22Empty character literalc:BBBXLSExportDemoXLSExportDemoExcelDocument.vb1633XLSExportDemo

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Generating And Writing XML Files From .net?

Oct 12, 2011

I want to generate an xml file from the vb.net form application and i have the following vb code and the xml output file is shown below the code

Imports System.Xml Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click


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Reading And Writing INI Files

Mar 12, 2011

I'm creating a simple forms application where users can enter their details and save the information to a .ini file because I needed this for a simple game profile. I've tried to make it write "Name =" + txtname.Text but it won't work anymore. And as well as that, I don't think It will load the text back from the ini file.

Here's the code I used;
Public Class Form1
Dim hFile As Long
Dim sFilename As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....

Form designer: [URL]
Form1.resk: [URL]
Form1.vb: [URL]

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Writing Arrays To Files .NET?

Dec 9, 2009

Basically I'm writing a program that records all the financial transactions I make. You type in what it is, whether it is going in or out, the date and the price. I will get on to adding the sums up later but that's important at the minute. With one record the program worked perfectly but as soon as I added an array to the records variable it stopped working and complained about a null value.


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Writing Text Files In Vb?

Jun 30, 2009

I'm working on a program where i need to create a text file and write in it. I created the file and I'm capable to write in it but my problem is that i'm not able to write text on the same line. Imagine you have 2 textboxes, the first is tb1 and the second is tb2. how can i write then content of the 2 textboxes on the same line in the text file?

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Writing/Reading .dat Files?

Dec 28, 2009

seeing as '.dat' files contain only what you want them to and there is no preset encryption for them etc could I write data to one by using this simple process:

1) Change file extension to '.txt'
2) Decrypt
3) Write
4) Encrypt
5) Change file extension to '.dat'

and pretty much the same for reading it. or am I thinking to simply?

I thought of the above way as i know how to write to text files already, but is this the best way to do it? or is there a better way?

EDIT: Nevermind you just write to it like a text file and encrypt/decrypt it. request lock/delete from mod.

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Saving A Excel Document After Writing Data To It?

Feb 2, 2012

I was developing a software with related to Excel, in which I have to write and SAVE the details at appropriate columns. I am currently having a problem in saving the data.

Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click


Very first time I debug the coding I haven't got much problem. But debugging it again gives me an Error AS: "A file named 'Resume.XLW' already exits in this location. Do you want to replace it?"

I was able to see this since I have enabled the display alerts. Disabling it generates a save as window.

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Writing A Listview To An Excel Spreadsheet Is Very Slow?

Mar 4, 2010

This method for writing a listview to an Excel spreadsheet is very slow.

Public Sub ListviewToActiveWorksheet(ByVal lv As System.Windows.Forms.ListView)
Dim mSheet As Excel.Worksheet
Dim mRow As Integer = 1


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Writing Data To An Existing Excel File

Mar 16, 2010

I'm fairly new to coding in Visual Basic, and I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:


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Writing Data To An Existing Excel File?

Mar 15, 2010

I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:

Name (First, Last)
Mailing Address
Email Address

...and so on. I've programmed the data to be sent to the Excel file upon clicking on the Submit button in the form itself. I've also created the Excel file and placed it on my C: drive, but the problem I'm having is trying to send the data from the VB form to the Excel file itself. Can someone please show me some sample code or point me in the right direction as to how to get the submitted information from the form to save into the Excel file, please?

I'm trying to get the information to show up in rows and columns in Excel like the following below (the dashes are just to show that the information should be in rows and columns):

Name--------------------------Mailing Address-------Email Address-------Gender-------Age
John Doe---------------------2300 Jackson Street-------- xxx@xxxx.com-------Male---------17

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Writing VB Code To Implement In EXCEL (using Arrays)

May 21, 2012

To write code to implement data from visual basic into excel. Write a VB.NET program to store the following numbers into an array named �Scores�: 89.5, 76.2, 90, 86, 81, 97, 61, and 73. Your program will calculate an average score, list each of these scores in a new Excel workbook and show whether each score is below or above average. Your program will then save the Excel workbook as TestScores.xlsx.

In column A1 it should say "average" and next to it (in b1) should have the average of all those scores. in the cells below (starting from A3) it should list the scores and the column next to each score it should say whether each score is above average, average, or below average (compared to the average calculated in cell b1)

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Control To Display Docx (word Files) And Xls (excel Files ) Inside Form?

Jun 20, 2010

which are the control used to display word files and excel sheets inside vb.net forms ? (i have already added reference lib.)

Platform: Vb.net (framework : 3.5)
language : visual basic

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Importing All Files In A Folder (all Excel Files) Into A Single Table In An Access Database

Aug 23, 2011

I am trying to import a bunch of excel 2003 files all with A:H columns and they are under the same headings etc. into a table in access 2003 database. This is a module in access im making. Im using a file search to look for every file that begins with Format (which they all do ) to get at all the files in the folder path. is there a more efficient way to do this? somehow select all files in a folder? and import each to the same table in access? The DoCmd.TransferSpreadsheet seeems to take each file path individually so I'm not sure how to get each file name in the folder to import it.

I have this at the moment:

Sub Import()
Dim db As Database
Set db = CurrentDb


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Better Ways For Reading And Writing To .txt Files?

Jun 29, 2006

I am trying to create a bunch of records, there will be a limited number of "Codes", about 50. Each "Code" is associated with a name from a textbox, I was trying to have it save each one when you click a button, to a .txt file.So, from the start the record will be blank, the person will go through the form, choose a number from a numerical up and down box, pick a name associated with it (both of these are mandatory and not implied). When they click the button, it will save the contents I talked about into a .txt file, say the number is #2, and the name is "Bob", the next time they try to change that value for #2, it will overwrite "Bob".

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Getting A Code For Reading And Writing To Files?

Jul 18, 2012

I have been given the task of basically reading and writing to and from files. Below is the code from one sub:

If btnSaveRecipe.Enabled = True Then
FileName = "C:UsersLeylaDocumentsRecipe TaskRecipe.txt"
FileWriter = New IO.StreamWriter(FileName)


I can't work out what i've done wrong, but when I open the file itself in the folder, it is empty.

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Opening And Writing To Files In VB 2010

Jun 24, 2011

Am writing a simple application which can write a to pdf,doc,xls and access files. so far it can write to word.i also want it to be able to navigate a hard disk and open these files using filters. i was using this code to write to the files


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Reading And Writing To Ini Files In VB 2010?

Sep 13, 2010

I am trying to search for snippet for reading and writing ini files in visual basic .net.

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Reading From And Writing To Text Files?

Mar 11, 2010

Input File to read:
SAMPLE NO: 10S-02013
Moisture 10.1


I am not getting the right output I need, as whenever it reads a line, it looses my sample numeber.

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Reading/writing Files VS2008?

Apr 6, 2009

I'm writing a system with several programs, each of which will start off with a number of 'run time parameters' which will be stored in what I call 'personality files'. Each file will have about 10 elements ( file locations, logo files, dates, numbers , text strings ). I"m starting by building little programs which maintain ( build and modify ) the personality files. To begin the first one, I"m only reading/writing 3-4 strings ( I"ll graduate to dates and numbers later )When I run the program below, I get " The process cannot access the file 'c:yyyyyyyy.zzz' because it is being used by another process. ". I also get"A first chance exception of type 'System.IO.IOException' occurred in Microsoft.VisualBasic.dll "

I get these errors even though I've done the usual stuff like deleting other versions of the test file, cancelling other processes which might be involved, and so on.

'.... user has clicked on SAVE in menustrip ....
Private Sub FileSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FileSave.Click


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Reading/writing Text Files?

Mar 3, 2009

so i have it so that the user input three initials and presses an enter button. Then it goes into a listbox where theusers initials and game score enter. I then have it transfer to a text file. all this works but i need some code toun through the text file and arrange them from highest to lowestheres my current "HighScore" codei know its going to be a for loop but im a beginner in vb and it would be so much easier in java button1 is the enter buttonbutton2 is the save button that saves to a text file

Imports System.IO
Public Class HighScore
Dim objStreamWriter As StreamWriter


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Text Parser - Writing To Cvs Files

Mar 11, 2012

I am having difficulty writing to cvs files. My application is a text parser that scans a txt file, removes punctuation, and then stores the individual words in another txt file for later analysis. My end aim is to process txt for semantic similarities. I'm very new to this so my code is very chunky But I'd really like to pull each sentence from txt file, put into an array, and then place each array item into a CSV file with commas between words. [Code]

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Using DAT Files - Reading - Writing And Formatting

Sep 1, 2011

i was wondering does any know of any good tutorial on using dat files eg reading writing and formatting. I am pretty sure you and use stream reader and writer form the IO but what about formatting.

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VS 2010 Reading And Writing Files?

Dec 27, 2010

My app has a series of parameters that is to be stored in an external files. Eventhough the "parameter" file could be edited by the end user, I really don't care that much about what the user does to them.

So my two questions are, what is the most effeicent means of reading and writing a file and in what format should the file be in? When I say effeicent I mean, what utilizes the least amount of memory during the process, is fast, and disposable.

Example: XML, Text, something else. StreamReader / StreamWriter or what ever.

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Writing To Closed BAT Files And Errors

Apr 16, 2009

This does not work because it will not write when the writers closed how do I keep it open? What do I have to change?
Dim tring As Integer
Dim startnumber1 As Integer
Dim bas As New System.IO.StreamWriter(SandboxLocation.Text & "internetconectivity.bat")
[Code] .....
If tring is more than one it doesn't work, it cant write to a closed bat file.

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[2005] Writing Random Files Name

Jan 5, 2009

I am writing the source code to write the random files name but I don't know how to write that in vb.net Here it is the


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Asp.net - Writing To Excel File Containing Formulas Is Extremely Slow

Dec 27, 2011

We have an automatic process that opens a template excel file, writes rows of data, and returns the file to the user. This process is usually fast, however I was recently asked to add a summary page with some Excel formulas to one of the templates, and now the process takes forever.

It successfully runs with about 5 records after a few minutes, however this week's record set is almost 400 rows and the longest I've let it run is about half an hour before cancelling it. Without the formulas, it only takes a few seconds to run.

Is there any known issues with writing rows to an Excel file that contains formulas? Or is there a way to tell Excel not to evaluate formulas until the file is opened by a user?

The formulas on the summary Sheet are these:

' Returns count of cells in column where data = Y
=COUNTIF(Sheet1!J15:Sheet1!J10000, "Y")
=COUNTIF(Sheet1!F15:Sheet1!F10000, "Y")


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COMException When Writing To Excel 2007 From Windows Forms

Jan 10, 2012

My Windows Forms app collects data from user input and mathematical calculation and outputs a set of results to an Excel spreadsheet.

Here's my code (for convenience, I've included only the code that seems relevant to the problem):

Dim exc As New Excel.Application
Dim book As Excel.Workbook
Dim sheet As Excel.Worksheet


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VS 2008 Excel.Workbook Writing With Reference To Cell (i)?

Jan 30, 2010

I'm trying to export a list of properties received from an API call out to an excel workbook. I'm quite inexperienced in the area but I'm trying to have the properties written relative to the cell (i) in the for loop.The code is this at the moment:

Public Sub BHorse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BHorse.Click


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