Took Oledbconnection With Excel File But Unable To Open That Excel Manually?
Mar 10, 2009I took oledbconnection with excel file, after disposing this connection i m still unable to open that excel manually,It shows some access error.
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Updating Excel File Using OleDbConnection Not Working?
Mar 4, 2008I am currently writing a program in vb.net that will read and write to an exel sheet using OleDbConnection. I can read in from the file fine. When I save to the excel sheet and open it, the changes are there, however, when I close the file it asks me if I want to save, which makes me assume that the changes are not saved even thought they show up.
Below is the code I am using:
Dim conn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & excelPath & ";" & _
[Code]....
Open Excel File And Reusing Existing Excel Instance?
Jul 13, 2010I have an application the contains several excel files bundled with it. I'm not opening the files and processing them within my application. These files contain a data-connection to reload all of the pivot-tables within each excel file. I have a 'link' on my form, that when clicked, it determines which file to open and calls a sub using filename and executing Process.Start(filename) for any excel file I want to open. I have no problems opening any one of the files and then exiting excel.
The problem is when I 'close' a file, but don't exit Excel; then try to open another file(clicking link on form)... it creates a new instance of Excel.
I know from experimenting that the fileopendialog form will 'reuse' an existing Excel instance, IF it does not already have a file open.
How can I do the same thing without using the fileopendialog?
I don't want the end-user to have access to the folders where these files live. That's why I have multiple 'links' on my form, one for each xls that already exists. I just want them to be able to click on a link and the xls file opens AND if they choose to merely 'close' a file and not exit... Don't create a new instance of Excel, but re-use the existing one.
Export To Excel Excel Could Not Open The File Because The File Format Is Not Valid?
May 8, 2012I have this issue that occurs with me and driving me crazy i have a report that contains thousands of records and i need to export it to excel , but the excel normal extension .xls
is showing missing records at the end of the file , so i save my file as an .xlsx extension it saves correctly but when i open the file it generates an error
"Excel cannot open the file '<var>filename</var>.xlsx' because the file format for the file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file."but when i test the file i drag it and open it in an empty notepad all the records shows up correctly
OledbConnection Not Reading All Data From Excel?
Jan 24, 2012I'm developing application in VB.NET 2008.I'm reading data from Excel through OledbConnection. Here data are reading sometimes perfectly but sometimes it is missing to read some data.
Example :In Excel ,I have 79 columns in excel and 4 rows , first 3 rows are headers so after import i'll delete that rows and actual data starts from 4, so here i have only one row.After Reading through oledb, that dataset's datatable has only first 3 rows( first row became header and 2 & 3 row only in datatable, its ignoring 4th row)
[Code]...
Opening Spreadsheet Using Oledbconnection Is Crashing When Using Excel 2007 Files?
Sep 8, 2009I've got a little app that uses oledbconnection to extract data from an Excel spreadsheet. I need this app to support .xls and .xlsx files. The app runs fine when I give it a .xls but when I select a .xlsx it crashes with an exception on my cn.Open command.
View 1 RepliesExport A Datagridview To Excel And Open The Excel Spreadsheet (not SAVE The Worksheet)?
Jan 10, 2012I'm trying to export a datagridview to Excel and open the Excel spreadsheet (not SAVE the worksheet).
Public Sub ExcelRpt(ByVal DgvName As GridView, ByVal url As String)
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet
[code]....
App That Opens Excel Visible Then Another Button_click That Writes To The Same Open Excel
May 11, 2012I have a VB.Net App that on ButtonRun_Click open Excel to get the "tab" and "column" then another buton that past content from textboxes. I get a "COMException was Unhandled" If I reopen excel it's in use.
Private Sub ButtonRun_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonRun.Click
Dim MyExcel As New Excel.Application
[Code]....
Unable To Save An Excel File?
Dec 15, 2011I cant able to save an excel file from VB.NET.
I used the code below:
SaveFileDialog1.Title = "Save Excel File"
SaveFileDialog1.Filter = "Excel files (*.xls)|*.xls|Excel Files (*.xlsx)|*.xslx"
SaveFileDialog1.ShowDialog()
[Code]....
Error occurred in the highlighted line as "Exception from HRESULT: 0x800401A8". I cannot analyse the cause for this error. because in before case it works fine for the same code i used.
Unable To Save Excel File Twice?
Dec 11, 2009I am opening an excel workbook, saving it under a new name, then run a macro on it from personal.xls, then resaving it over this new file.
Then I try to immediately resave again asa third name and it fails
Here is the code:
' Start Excel and get Application object.
oXL = CreateObject(
"Excel.Application")
oXL.Visible =
[Code].....
"The file could not be accessed. Try one of the following: - Make sure the specified folder exists. - Make sure the folder that contains the file is not read-only. - Make sure the file name does not contain any of the following characters: < > ? [ ] : | or * - Make sure the file/path name doesn't contain more than 218 characters."
[2005] Can't Open Excel File By Using XlApp.Workbooks.Open?
Feb 11, 2009I would like to open the excel file after create the excel file. The creating file function is done, but the system unable to open the excel file. My coding as below:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim misValue As Object = System.Reflection.Missing.Value
[code]....
Cannot Open Excel File
Nov 26, 2010I have written an access application for project management and am trying to convert it to VB so i can make an exe. what i need to do is open an excel file because my gnatt chart creator is an excel document.When i run my debugger it says it doesn;t know what the open command is..I think i need to include a reference but do not know which one and there are lots to choose from. i have included the excel reference so the compiler knows what an Excel.Application is and what Application.Workbooks is. but when i try and go beyond work book i get no options like open or save or saveas or worksheets.[code]
View 1 RepliesHow To Open Excel File
Nov 4, 2009i want to open an excel file inside my folder which is dynamic meaning it can be in drive c: or d: as long as it is inside a specific folder grace
View 4 RepliesOpen An Excel File?
Aug 10, 2010I want to open a excel file, and then close my projekt:
so when the projekt is close the excel is open with a file.
Open Excel's File From Vb?
Jan 24, 2011how open excel's file from vb
View 5 RepliesAssign Value Without Open Excel File?
Jan 25, 2011[code]...
how can I assign value to wb witout open the file (I want another function to give wb value without open the file)
Best Or Better Method To Open Excel File
Jun 2, 2011Im struggling on how to open an excel workbook without one of two problems.
1. After the first workbook is opened and I close the workbook, if another is opened the worksheet area is "transparent", as in, you can see the desktop or any open app behind excel.
2. Closing excel and opening another workbook after X times (4+?) via the vb.net app I use causes the computer to reboot.
I am stuck thinking it is the method used to open excel within the app.The code below has two methods, both produce the same affect. One method is blocked (makes it easy to test either one).[code]I have two buttons that open workbooks, both have identical code less the workbook requirements.Is there a better or best method to use for opening excel workbooks from vb.net?
Declare / Open Excel File?
Aug 24, 2011I've been trying for a while to declare or to open a excel sheet in vb.net. I already read excel file in vb.net and other links but it doesn't work. I added Microsoft Excel 12.0 Object Library. I included:
[Code]...
How To Open Excel File With 2005
Jun 4, 2010On my computer I've VB.net 2005. and also office 2007. I try to open an excel file like that
Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
Open An Excel File With Arguments From .net?
Feb 16, 2009I am working on a VB.net program that must get data from excel workbooks. I open the excel workbook, copy a chart image tp the clipboard, then copy the contents of the clipboard to a PictureBox.Image. The problem I am having is the files contain links to other workbooks so when I open them I get a message box asking if I want to update the links. Since this is ment to run automaticaly at certain times I will not be there to click on Yes or No.I also have a similar problem when I try to close the workbook. I get the messagebox for saving changes to the file.Here is the code I am using:
Dim objXLS As Object = CreateObject("Excel.Application")
Dim FileName, Sheet As String
Dim data As IDataObject
[code]....
objXLS.ActiveWorkbook.Close()'This is where I get the file save changes message boxI am using Visual Studio 2008 Pro and excel 2003My operating system is XP?
Open Excel File From The Same Folder?
Nov 26, 2011I'm using vb.net 2008 I want to use this code to open Excel file from the same folder where the program(exe) will be.
Dim exl As New Excel.Application
exl.Workbooks.Open("Name.xlsx")
as when did in Process.Start("Name.xlsx")
Open Excel File In Program?
Apr 24, 2007I have an excel file,having lot or micros, connecting to database, doing some complex calculation..inshot that excel file is itself an application.
Now I want to open that excel in VB.net form, on button click. I prefer to open that excel in vb.net form itself having all the excel tool bar etc, If that is not possible then opening in separate window using excel will also solve my purpose (coz when we open in excel it self we will get all the toolbar option etc automatically)
Open File In Excel Then Save It As Csv
Apr 20, 2010I have a database file that excel reads just fine but i can't figure out what type of file it is. So i figure the easiest thing to do is open the file in vb.net via an excel object, then execute the save as i have seen 1000 examples but even after i think i add a reference vb still has no idea what "excel." is.[code]
View 1 RepliesRead From An Excel File That Is Already Open?
Jun 6, 2011I want to rewad values from an Excel file that is always open and updating. I was using standard code to open up Excel and read from it, which worked fine, but that opens a new instance of the sheet. I need to read from a sheet that's already open.
I'm using xlWorkBook = xlApp.Workbooks.Open("c:\example.xls") which opens a new instanc of example.xls.
If example.xls is already open, is there a way of reading from it?
.net - When Importing Data From Excel To File Open
Mar 6, 2010When importing data from excel to vb.net desktop application, Im having "file is open" error. Excel file is at the remote pc. Excel file must open and I have to reach anytime. How can I handle this problem?
View 2 RepliesCheck If Excel File Is Open By Other User
Mar 31, 2010I have a excel file place on server. I am using a application which written by VB.NET to open file in read only mode. User 1 open file in read only mode. How can user 2 detect that file is open or not status?
View 2 RepliesExcel - Open A File In An Active Workbook?
Aug 19, 2010I have a program that filters data and then outputs it to a tabg delimited file. I then use Excel Interop to open this file in Excel because directly outputting to a worksheet takes too long. So currently I am using this code:
AD.DF.WriteToFile(vbTab)
Dim WB As Workbook = ExcelApp.Workbooks.Open(AD.DF.DatafileInfo.WriteToFileLocation)
ExcelApp.Visible = True
The first line takes the filtered data and outputs to a tab delimited file. The second opens that same file in a new workbook in Excel. And obviously the third makes Excel visible. Here is my problem though: right now when this code is run there are two open workbooks. I already have an active workbook and I would just like to open this file to that workbook.
How To Open And Populate A .XML File In A Sheet In Excel
Oct 12, 2011I am looking for a way to open and populate a new sheet while population the sheet from a file.xml. Any ideas?
View 2 RepliesOpen An Excel File In A Richtextbox In 2008?
Jan 2, 2010Currently i working on a project which needs an excel file to be opened at the rum time in Vb.net 2008.i tried to call the same using richtextbox, it shows the file but the content is not readable.
View 1 RepliesOpen Excel File Using Macros For Every One Hour
Sep 7, 2010how i can open execl File using macros For every one hour . The exel file is located on my "D:Test.xls"
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