Export To Excel Excel Could Not Open The File Because The File Format Is Not Valid?
May 8, 2012
I 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
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Jun 27, 2012
i Have Used Database file for storing Data in my Application.Now I want to take backup of data in Access, Excel or in Any other Format.
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Feb 24, 2010
I am using asp.net oledb to export information to excel file. I encounter problems when the information to export becomes too big, in this case the code I have given below, the excel file generated becomes an empty spreadsheet.If I changed the loop to 1123 for insertion of the rows. The generated excel file is fine, 1125 rows, and 4 columns shown.A test program in windows form is also working fine regardless of how many rows.[code]I couldn't find a solution to my problem as well. What I did eventually was to run the process using another separate windows service. The code works perfectly fine running from a windows form or service program, but not asp.net, not sure why.
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Oct 7, 2011
I need to export Chart(image) and grid (tabular) row data into excel file. I can not use automation because Office tools are not installed in my server. I've found a bunch of free/proprietary tools like:
NPOI
MyXLS
ExcelWriter (softartisans)
JetCell (DevTrio)
Aspose.Cells (Aspose)
But I do not know which one is better for my needs. I need to export not only grid row data but also Chart (image), thats why I am thinking about.
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Jan 10, 2012
I'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]....
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Apr 17, 2012
ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source='" + fileName + "'; Extended Properties=Excel 5.0"
Dim ExcelConnection As System.Data.OleDb.OleDbConnection
ExcelConnection = New System.Data.OleDb.OleDbConnection(ConnectionString)
Error occurs on line ExcelConnection.Open()External table is not in the expected format.
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Jul 13, 2010
I 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.
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Mar 10, 2009
I 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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Jul 8, 2010
I like to compress the xmldata before the data is provided to the client as an excel file. I am trying to compress and deliver it as a .zip file. its not working Here's my code below. I tried compressing it, converting it to bytes etc etc. The issue with below code is, the XSL transformation is not happening properly and the output excel file is raw xml with some .net exception at the end. (that's what I see on the .xls file that's downloaded at the end) Before I started working on compression my below code was working fine that gives properly formatted excel file from the xml input. the excel file is so nice you can't even tell it was from XML.
[Code]...
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May 22, 2009
A user exported a excel file and he opened it.Some reason, he tried to export same exel file as same name.Then, the application is gone because it does not know what do with it.How do I check the excel file is opned or not when I try to export as same file name again?
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Nov 11, 2011
i have this code it keeps giving me error
Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim response As HttpResponse = HttpContext.Current.Response()
response.Clear()
response.AddHeader("content-disposition", "attachment;filename=XXXXXX.xls")
[Code]....
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Jun 10, 2007
I have done a google and see that many people have asked the question on how to export a Datagridview to a Excel (.xls) file. For some reason I cannot seem to get it to work (i have gotton the program to open an Excel and save it, all hidden in the background). I use a bit of the coding from this source code [URL] but modified it and incorporated it into my program. It connects an OLE Database connection with the excel sheet... but what i want to do is beable to alter the sheet in the datagridview and export it back to an excel sheet. I am not trying to sound pushy when i say this but... if you download the source file i am using you will get a really good idea of my situation..
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Nov 30, 2011
I'm using vb2008 I ried this code to print data from my project to Excel file if the File is open . but didn't success
[Code]....
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Jan 11, 2007
I am working on a windows application using vb.net 2003. I am required to export my datagrid onto a excel file. I just need a button.
This is my code to populate the datagrid.
Code:
Dim connectionString As String
connectionString = "DRIVER={MySQL ODBC 3.51 Driver};" + "SERVER=localhost;" + "DATABASE=luckyspin;" + "UID=root;" + "PASSWORD=123;" + "OPTION=3"
[Code]....
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Aug 6, 2011
I need some easy/basic way to export DataGrid to Excel file and also to be able later to Import this file back to DataGrid. Nothing complicated its simple table with values amount of columns won't change.
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Apr 11, 2011
is there a way to export the whole data in one table from sql server 2008 directly using asp.net and vb.net without using datagridview to EXCEL FILE?
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Apr 25, 2012
So I load some excel data into a LB and can manipulate it, at this point I want to export the data back into excel and do so with the following button:
Public Sub Button4_click(ByVal sender As Object, e As System.EventArgs) Handles Button4.Click
ListBox1.Sorted = True
[Code].....
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Jan 17, 2012
I have a desktop app, I use this code to create a .xls file using a FileStream object:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim i As Integer
[code].....
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Jan 6, 2012
I need to read a .txt file and then put that into fields in an excel spreadsheet. for example i get print spool files that have invoices on them i need to put the customer names into a column of customer names and their addresses into a column of addresses. here is what i wrote to read with:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim reader As New System.IO.StreamReader(TextBox1.Text)
[Code]....
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Nov 29, 2009
I'm using OLE to connect to a database using VB.NET, and show the results in a DataGridView. I want to export the data that is in the DataGridView to an Excel format file, i.e., the user can save the content of the DataGridView as MS Excel file.
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Jun 8, 2009
i have a form with DataGridView to show table from database. is it possible for me to add a button then when click, the data from the DataGridView will export to a new excel file?? if possible, can teach me how to do it?
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Dec 2, 2011
I'm using vb.net 2008 - Ms excel 2007
I'm trying to export data from my project to excel file called ta1 in "C" hard
The first code to open the file and print data to it. it worked with me very well
The second code is to print the data when the file it opened. It didn't work with me
First Code-Work very well
Dim exl As New Excel.Application
Dim exlWorkSheet As Excel.Worksheet
[Code]....
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Jun 6, 2011
am having problem in saving datagridview data to excel file.. i have import excel namespace into my project but it shows
error : Namespace or type specified in the Imports 'class2' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.
Imports Excel = Microsoft.Office.Interop.Excel
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
[Code].....
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Feb 25, 2008
I am using VB2008 and have an integer value.How do I export it to an exisitng Excel file, I want to put it in a specific cell.Also, I may have the need to do this for an array in which I would like to put in in consecutive cell in Excel.
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Apr 7, 2012
I need to save the results of each search that I run on my database, into an excel file. So it is an iterative process where the new search results are added on as new rows to the excel file in each export. I am running the following code which works perfectly fine but for the fact that each export is saved to a newly created excel file.[code]...
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Jun 2, 2010
This is the code that I have to export data to Excel.
Dim oExcel As Object
Dim oBook As Object
Dim oSheet As Object
oExcel = CreateObject("Excel.Application")
oBook = oExcel.Workbooks.Add
[Code] ....
I can create and save the excel file, but I can't update the contents.
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Dec 27, 2010
I have created an vb.net application in which ,I want to export sql table data to excel.
On form I have used one button namely "Export to Excel".
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Sep 24, 2009
I have to import a tab delimited file into Excel and export it back out to correct a formatting issue caused by FoxPro. I need to pad a column with 10, Zeros and that is good with this here: objxl.columns("B:B").numberformat="0000000000". However I have 2 cells in the sheet, row 1B and 2B that I want to exclude from the number format above. Because it is a date field and it writes to that same column so it pads my date. I do have a need to Pad that date field with mmddyyyy so I have to pad it 8 - zeros.
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May 26, 2009
How do I specify a path for current user to export excel file? My goal is to set a path as "MyDocument" of current user to export excel file when "SaveFileDialog" is opened.
Below is my code.
With UC_PAY_STATUS_U
.SaveFileDialog1.Filter = "Microsoft Excel|*.xls"
.SaveFileDialog1.Title = "Save as Excel"
.SaveFileDialog1.FileName = "Payroll" & Microsoft.VisualBasic.Strings.Replace(Now.ToShortDateString, "/", "")
.SaveFileDialog1.ShowDialog()
[Code] .....
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May 22, 2012
I need to open an excel file from vb.net and then search it for specific data. I then need to take those data and insert them into text boxes on a form that i have created. This is all controlled by a button click. I already have some code that will open a file dialog box and let me navigate to the correct file, but I am having trouble with the search portion. I have tried the Find function but I am not sure of the proper syntax. I am using Visual Studio 2008 and Excel 2003.
[Code]...
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