Web Forms :: Convert Excel File (XLS And XLSX) To PDF File Using C#
Dec 4, 2012I need to convert a excel file to pdf file in asp.net. How to achieve this in c#.
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Excel Cannot Open The File "Report.xlsx" Because The File Format Or Extension Is Not Valid?
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Aug 10, 2010In 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?
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Controls :: Convert Excel To PDF File Using C#
May 30, 2013I have exported the excel and save it in a folder.
Now i need to save the excel in the pdf format using c#.net
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Sep 16, 2010Iv created a web application using vb.net 2005. Its working fine and running fine on the server (Microsoft Server 2003). The problem i have is to dowload a file from the same server using vb.net. I tried using this code but it gives me a : "is not a virtual path" error.
Response.ContentType =
"file/xlsx"
Response.AppendHeader(
Response.TransmitFile(
Response.End()
"Content-Disposition",
"attachment; filename=AllReports.xlsx")".xlsx")
Web Forms :: Default Save As File Type - Xls / Xlsx?
Feb 10, 2011While exporting the html to Excel using Response.Write() in ASP.NET and when I try to save as the exported file I'm getting the default save as file type 'Web Page *.html, *.htm in excel application. Is there an any fix to get the default save as file type as xls or xlsx?
View 6 RepliesWeb Forms :: Change Column Name In Xlsx File When Execute From Database?
May 7, 2015according below thread
[URL]
I export xslx file from database from estate_p table in Estate_p table are below column
Id Name Behcode Estate
I want when it export these column into excel it change column name like below
Id CustomerName Code Estate
How I can do it?
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View 1 RepliesWeb Forms :: Error - Could Not Find File 'C:CHURCHROOF - CRIME Live 150110.xlsx'
Jan 15, 2010I get the following error message:
Could not find file 'C:CHURCHROOF - CRIME live 150110.xlsx'.
When running the following code:
if (FileUpLoad1.HasFile)
{
string serverpath = "\\server1\Temp\ ";
//top.window.close();
string filepath = FileUpLoad1.PostedFile.FileName;
string filename = FileUpLoad1.FileName;
string destination = serverpath + filename;
//File.Delete(destination);
string[] existingFilesArray = System.IO.Directory.GetFiles(serverpath, "*.xlsx");
foreach (string existingFile in existingFilesArray)
{
System.IO.File.Delete(existingFile);
}
File.Copy(filepath, destination);
}
The code looks for a file and uploads the file to another location.
it fails at the last section
It works for me on my machine. but not the users
File.Copy(filepath, destination);
NO matter were the users put the file it fails.
Unable To Import Xlsx File
Jan 17, 2011I 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
C# - Download .xlsx File Using Response.TransmitFile()?
Feb 16, 2010I'm working on some code that generates an Excel spreadsheet server-side and then downloads it to the user. I'm using ExcelPackage to generate the file.
The generation is working just fine. I can open the generated files using Excel 2007 with no issues. But, I'm having trouble downloading the file with Response.TransmitFile().
Right now, I have the following code:
//Generate the file using ExcelPackage
string fileName = generateExcelFile(dataList, "MyReportData");
Response.AddHeader("content-disposition", "attachment;filename=FileName.xls");
Response.ContentType = "application/vnd.xls"
Response.Charset = "";
Response.TransmitFile(fileName);
When Excel 2007 opens the file downloaded as above, it gives the "file format doesn't match extension" warning. After clicking past the warning, Excel displays the raw xml contents of the file. If I change the file extension, like so Response.AddHeader("content-disposition", "attachment;filename=FileName.xlsx");
Excel 2007 gives an "Excel found unreadable content in the file" error, followed by a dialog that offers to locate a converter on the web. If I click "no" on this dialog, Excel is able to load the data.
I've also experimented with different MIME types, like application/vnd.ms-excel and application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, combined with file extensions of .xls and .xlsx. All combinations result in one of the two behaviors mentioned above. What is the correct combination of file extension and MIME type to use in this scenario? What else could cause this failure, other than an improper MIME type or extension? FYI, this is occurring with Visual Studio's built-in development web server. I haven't yet tried this with IIS.
Databases :: User Validation In Xlsx File?
Aug 20, 2010I am validating user from Login.xlsx file. It was working fine by validating email and password from that file. For testing i got new file same contents of file but added some more user names.So after that when i validating the user i am getting the following error "Data type mismatch in criteria expression".But when i replaced the new to old one it is working fine. The contens of both files are the same. So why this kind of error happened.
View 3 RepliesUnable To Open .xlsx File On The IIS Server?
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[Code]....
The exception is:
An error: The Microsoft Office Access database engine cannot open or write to the file ''. It is already opened exclusively by another user, or you need permission to view and write its data.
Web Forms :: How To Convert Pdf File Into Binary Data Using File Streams
Nov 28, 2010My files are stored on a data repository in different formats like .doc,.docx,.pdf,.jpeg,.jpg,.tiff. I want to get those files in binary format(i.e byte[]) so that I can able to see that file to the user using a radbinary image control.I am able to get .jpeg and .jpg files and I can show those to users.But while I am trying to show .doc,.docx,.pdf files I am getting "Not valid parameter" exception.How can I solve this problem? My doubt is that pdf,doc,docx files are having no of pages. So while converting this total pages in to binary data I am getting error. So How can I show first page of .doc,.docx,.pdf files using radbinary image control.Here is my code.RadBinary Image controlis a telerik control,it only deals with binary data.
[Code]....
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View 1 RepliesForms Data Controls :: Saving Repeater Data As .xlsx File?
Apr 1, 2010Using the Interop for Excel 2003 I had a nice little link that saved or opened the repeater content as .xls. Now we are using Excel 2007 and I get file format error messages. When I click the OK button on the error pop-up Excel closes. Does anyone out there know how to convert my code to handle the .xlsx format? I've been reading up on Interop for 2007 but none of the examples seem to work for this particular simple task. Here is my code from the "Export to Excel" button click:
Protected Sub btnExport_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExport.Click
' Send HTTP headers that specify Excel filename, MIME type, and character set
Dim sTemp As String = "attachment;filename=CoverageCase" & Session("OpenCase").casekey.ToString & ".xlsx"
Response.AddHeader("content-disposition", sTemp)
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
' Create objects used to render the controls
Dim strw As New System.IO.StringWriter........
I found a thread from a couple of years ago dealing with this but there was no solution [URL]. There were a couple of tortureous work arounds but neither work for me.
Web Forms :: Exporting To Excel 2007 (XLSX Format)
Mar 13, 2012in 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
How To Convert The Binary File To A File In A String Format And Display It In A Page
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View 5 RepliesUsing Oledb To Export Excel File Returns Empty File
Feb 24, 2010I 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 has been simplified, "information ..." in the sql insertion command represents 1803 characters.
ExcelObjConn = "Provider=Microsoft.Ace.OLEDB.12.0;" & _
"Data Source=" & fileName & ";Extended Properties=Excel 12.0 XML"
ExcelConnection = New System.Data.OleDb.OleDbConnection(ExcelObjConn)
ExcelConnection.Open()
Try
SqlCommand = "CREATE TABLE ABC ([row1] text, [row2] text, [row3] text, [row4] text)"
ExcelCommand = New OleDb.OleDbCommand(SqlCommand, ExcelConnection)
ExcelCommand.ExecuteNonQuery()
ExcelCommand.Dispose()
For i As Integer = 0 To 1124
SqlCommand = "Insert into ABC ([row1], [row2], [row3], [row4]) Values ('information...', 'information ...', 'information ...', 'information ...')"
ExcelCommand = New OleDb.OleDbCommand(SqlCommand, ExcelConnection)
ExcelCommand.ExecuteNonQuery()
ExcelCommand.Dispose()
Next
Catch ex As Exception
Finally
If ExcelConnection IsNot Nothing Then
ExcelConnection.Close()
ExcelConnection.Dispose()
End If
End Try
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.