Excel cannot open the file "Report.xlsx" because the file format or extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file
View 2 RepliesI need to convert a excel file to pdf file in asp.net. How to achieve this in c#.
View 1 RepliesI have a web page with a gridview control and a button for Exporting to Excel
I get following error when exporting to Excel.
"The file you are trying to open, 'someFileName[1].xls, is in a different format than specified by the file extension. Verify that file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?"
Clicking Yes opens the file. I would like to avoid showing the above error to the users.
Following code is used from the click event. I've left the commented code here to show what I've tried based on results from internet search. I have Microsoft Office Excel 2007 on local PC.
[Code]....
I have a link http://Test/Folder/file1.xls which is working fine But if I typehttp://Test/Folder/file1.xlsx it is not working. It is giving me a file not found error.So when I read online every one is suggesting me to add the correct MIME type at tyhe IIS level. I don't know if that's the correct thing to do.I opened IIS and navigated to folder FOLDER right clicked and selected properties -> HTTP Headers -> MIME Types->New -> Extension -> .Xlsx-> What should i be entering for MIME type?
View 1 RepliesI would like to upload a xlsx file to Oracle DB (Oracle 11g). I'm using VS .NET 2008 (C#, web).
The file contains around 500 rows.
In my application I've allowed users to upload Excel 2003 .xls files, and import them into a Gridview. This has been working fine using the following connection string:
[Code]....
Now my users are using Excel 2003, 2007 or 2010, I need to allow the newer file extensions (.XLSX) to be accessible too.
Therefore, within the connection string above I presume I could change the Excel version from 8.0 to 9.0 or 10.0 respectively, but is there much difference between Excel 2007 and Excel 2010 files?
If so, is it possible to 'detect' the Excel file version so that I can use the appropriate connection string to read the data from the files?
in my web application page i have a option to export to excel . I am able to export the data to Excel but have 2 issues
1) i hav ethe option of exporting in .XLS or .XLSX format
i am able to export in .xls format from any system ie the system having office 2007 or 2003
but when i am trying to export in .XLSX format i get error
Microsoft Office Excel---------------------------The file you are trying to open, 'noup.xlsx', is in a different format than specified by the file extension. Verify that the file is not corrupted and that the file extension matches the file format---------------------------Ok---------------------------
2) when exporting i want the excel sheet to be saved with the name thats selected from a dropdown
suppose the dropdown has text selected as CITY
i want the excel sheet as CITY.XLS/.XLSX
i my developemnet system it works fine with below code
string filename = dropdown1.SelectedItem.Text
if (Extension.SelectedValue.ToString() == ".xls")
{
[Code].....
but on production server i get the name of .aspx page
There is a file with an extension .cert sitting on web server. when i tried to access it through URL, i couldn't open it and didn't give any error message also. I verified the file existence in that folder and also i could open it using notepad. Is there any MIME to be added to open this file?
View 1 Replies I have been able to import an excel file sql bulkcopy locally. But when I publish the code to the server I get the following error messages:
Exception Message: 'C:MyTest.xls' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides.
Exception Source: Microsoft JET Database Engine
Here is code:
[code]....
I using this code for opening excel is asp.net but its not working
[Code].....
How is it possible to open an excel template (Which has a small text of hello) from the server onto the client machine?
View 2 Repliesi have try to export data to excel using gridview.
I have export it successfully but some data is missing which is due to the column format in the exported excel file is not TEXT .
[Code]....
I need to set the exported excel file column format to TEXT but find no solution on this.
I am trying to import the excel file whose format is not in row column order in asp.net 3.5
I tried to read the file using OleDBDataAdapter but it given me the error "External file is not in proper format" something like that..
Date format is 1:55:25 AM in the excel file, after reading using ExcelReaderFactory.CreateBinaryReader, I get the 0.0451388888888889.
View 3 RepliesWe have a tab delimited file that we are making available for download. The file extension is txt, but the users want it to open automatically in Excel. The previous developer had used the following code:
[code]....
The ContentType is being set to Excel, but that doesn't seem to have any effect. I am guessing the txt file extension is causing it to be picked up by notepad or the like instead. I have tried just renaming it to a xls extension, which works but Excel complains that I am trying to trick it or it might be a corrupted file.
I have a requirement where i need to open excel file from system using link
i build link from code <a href="path fo file">
but this does not work from aspx page
if i put same thing in seperate html page nd run it works fine
In Crystal Reports Viewer (2008) for ASP.Net, when you click on the Export button, the Export dialog shows up with File Format options:
[code]...
how to remove some of these options so that end users wouldn't see it?
how to download excel file containing formula like sum and cell protection from a reportviewer?
I had tried to render the end result from the reportviewer to edit it result before exporting it out but reportviewer is only able to render out as byte format.
I got struck while trying to convert the bytes to a table format where i could add the formula in but to not vaild.
We moved to a new SQL server and I started getting an error on one of my sps only when I ran it from a website. If I manually ran the sp it worked fine. The error I got was this System.Data.SqlClient.SqlException: OLE DB provider 'Microsoft.Jet.OLEDB.4.0' cannot be used for distributed queries because the provider is configured to run in single-threaded apartment mode. I can tell you that this sp does some things, then calls another sp which writes some sql to open an excel file and insert the data. Here is the pseudo
SET @sql = 'INSERT INTO dbo.TempParts (partKey, partKeyNumeric, partKeyAlpha, PartNumber, [Description], Comment, notAvailable ,BatchID)
I tried simple code like this using href element. But it tries to open the sheet.xls in the browser window and says it can't find the file. I want the excel file to be opened in excel (not browser).
<a href="file://domainname/vol1/destinationfiles/sheet.xls" >some excel file</a>
I have created a CSV file on the server and want to send it to the user using the following code:
Dim strPhysicalPath As String
strPhysicalPath = Server.MapPath( "CSV/" & PathVirtual)
Dim objFileInfo As System.IO.FileInfo = New System.IO.FileInfo(strPhysicalPath)
Response.Clear()
Response.ContentType = "application/vnd.ms-excel"
Response.AddHeader("Content-Disposition", "attachment; filename=" & objFileInfo.Name)
Response.AddHeader("Content-Length", objFileInfo.Length.ToString())
Response.WriteFile(strPhysicalPath)
Response.Flush()
Response.End()
This seems to work fine except when the downloaded file is viewed in Excell the html code behind the page from which it came is also appended to the file. Does anyone have any idea why it does this?
I have an excel file created at this link:
<a href=""Exports/" & fileName & """></a>
how to open it in a button click, using asp.net / vb.net as codebehind.
I am unable to import xlsx file in Asp .Net getting below error:-
Could not find installable ISAM.
I am using below code for importing xlsx file:-
'function
Protected Function ExcelConnection() As OleDbCommand
' Connect to the Excel Spreadsheet
Dim xConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:Users cs0028DesktopUpload1.xlsx;" & _
"Extended Properties=Excel 12.0;"
' create your excel connection object using the connection string
Dim objXConn As New OleDbConnection(xConnStr)
objXConn.Open()
Dim objCommand As New OleDbCommand("SELECT * FROM [Sheet1$]", objXConn)
Return objCommand
I want to Export my gridview to Excel BIFF. Could any one suggest the approaches to do this.
View 2 RepliesI am trying to import excel sheet, got an error like "
The Microsoft Jet database engine cannot open the file ''. It is already opened exclusively by another user, or you need permission to view its data"
I have given all necessary permissions but no luck..