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How can I create an Excel spreadsheet with C# without requiring Excel to be installed on the machine that's running the code?
Hi Dietmar, I have used your excel.dll and it works great! There is only one problem I have. After I have read some Cell-values in my programm, and even closing my program, this excel-file is locked for using in excel. Code sample C++.NET: Read data from XLSX Excel file in C++.NET from ASP.NET web pages, windows applications, winforms, console applications. Spreadsheets in.NET Excel library for reading Excel files in C++.NET.
Read Excel with ASP.NET tutorial shows how to read data from Excel file in ASP.NET using C# with Bytescout Spreadsheet SDK. Use the source code below to read Excel files. Use the source code below to read Excel files.
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You can use a library called ExcelLibrary. It's a free, open source library posted on Google Code:
This looks to be a port of the PHP ExcelWriter that you mentioned above. It will not write to the new .xlsx format yet, but they are working on adding that functionality in.
It's very simple, small and easy to use. Plus it has a DataSetHelper that lets you use DataSets and DataTables to easily work with Excel data.
ExcelLibrary seems to still only work for the older Excel format (.xls files), but may be adding support in the future for newer 2007/2010 formats.
You can also use EPPlus, which works only for Excel 2007/2010 format files (.xlsx files). There's also NPOI which works with both.
There are a few known bugs with each library as noted in the comments. In all, EPPlus seems to be the best choice as time goes on. It seems to be more actively updated and documented as well.
Also, as noted by @АртёмЦарионов below, EPPlus has support for Pivot Tables and ExcelLibrary may have some support (Pivot table issue in ExcelLibrary)
Here are a couple links for quick reference:
ExcelLibrary - GNU Lesser GPL
EPPlus - GNU Lesser General Public License (LGPL)
NPOI - Apache License
ExcelLibrary - GNU Lesser GPL
EPPlus - GNU Lesser General Public License (LGPL)
NPOI - Apache License
Here some example code for ExcelLibrary:
Here is an example taking data from a database and creating a workbook from it. Note that the ExcelLibrary code is the single line at the bottom:
Creating the Excel file is as easy as that. You can also manually create Excel files, but the above functionality is what really impressed me.
If you are happy with the xlsx format, try my GitHub project, EPPlus. It started with the source from ExcelPackage, but today it's a total rewrite.It supports ranges, cell styling, charts, shapes, pictures, named ranges, AutoFilter and a lot of other stuff.
I've used with success the following open source projects:
- ExcelPackage for OOXML formats (Office 2007)
- NPOI for .XLS format (Office 2003). NPOI 2.0 (Beta) also supports XLSX.
Take a look at my blog posts:
And what about using Open XML SDK 2.0 for Microsoft Office?
A few benefits:
- Doesn't require Office installed
- Made by Microsoft = decent MSDN documentation
- Just one .Net dll to use in project
- SDK comes with many tools like diff, validator, etc
Links:
- blogs.MSDN brian_jones announcing SDK
- blogs.MSDN brian_jones describing SDK handling large files without crashing (unlike DOM method)
You can use OLEDB to create and manipulate Excel files. Check this: Reading and Writing Excel using OLEDB.
Typical example:
EDIT - Some more links:
The commercial solution, SpreadsheetGear for .NET will do it.
You can see live ASP.NET (C# and VB) samples here and download an evaluation version here.
Disclaimer: I own SpreadsheetGear LLC
A few options I have used:
If XLSX is a must: ExcelPackage is a good start but died off when the developer quit working on it. ExML picked up from there and added a few features. ExML isn't a bad option, I'm still using it in a couple of production websites.
For all of my new projects, though, I'm using NPOI, the .NET port of Apache POI. NPOI 2.0 (Alpha) also supports XLSX.
An extremely lightweight option may be to use HTML tables. Just create head, body, and table tags in a file, and save it as a file with an .xls extension. There are Microsoft specific attributes that you can use to style the output, including formulas.
I realize that you may not be coding this in a web application, but here is an example of the composition of an Excel file via an HTML table. This technique could be used if you were coding a console app, desktop app, or service.
Advanced grammar in use with answers martin hewings pdf. If you're creating Excel 2007/2010 files give this open source project a try: https://github.com/closedxml/closedxml
It provides an object oriented way to manipulate the files (similar to VBA) without dealing with the hassles of XML Documents. It can be used by any .NET language like C# and Visual Basic (VB).
ClosedXML allows you to create Excel 2007/2010 files without the Excel application. The typical example is creating Excel reports on a web server:
You actually might want to check out the interop classes. You say no OLE (which this isn't), but the interop classes are very easy to use.
You might be impressed if you haven't tried them.
Please be warned of Microsoft's stance on this:
Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, ASP.NET, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when Office is run in this environment.
Here's a completely free C# library, which lets you export from a
DataSet
, DataTable
or List<>
into a genuine Excel 2007 .xlsx file, using the OpenXML libraries:Full source code is provided - free of charge - along with instructions, and a demo application.
After adding this class to your application, you can export your DataSet to Excel in just one line of code:
It doesn't get much simpler than that.. Darkest dungeon build 2034.
And it doesn't even require Excel to be present on your server.
You could consider creating your files using the XML Spreadsheet 2003 format. This is a simple XML format using a well documented schema.
You may want to take a look at GemBox.Spreadsheet.
They have a free version with all features but limited to 150 rows per sheet and 5 sheets per workbook, if that falls within your needs.
I haven't had need to use it myself yet, but does look interesting.
Syncfusion Essential XlsIO can do this. It has no dependency on Microsoft office and also has specific support for different platforms.
- WPF and Windows Forms
- Windows Service and batch based operations
Code sample:
The whole suite of controls is available for free through the community license program if you qualify (less than 1 million USD in revenue). Note: I work for Syncfusion.
Well,
you can also use a third party library like Aspose.
This library has the benefit that it does not require Excel to be installed on your machine which would be ideal in your case.
OpenXML is also a good alternative that helps avoid installing MS Excel on Server.The Open XML SDK 2.0 provided by Microsoft simplifies the task of manipulating Open XML packages and the underlying Open XML schema elements within a package. The Open XML Application Programming Interface (API) encapsulates many common tasks that developers perform on Open XML packages.
Check this out OpenXML: Alternative that helps avoid installing MS Excel on Server
The various Office 2003 XML libraries avaliable work pretty well for smaller excel files. However, I find the sheer size of a large workbook saved in the XML format to be a problem. For example, a workbook I work with that would be 40MB in the new (and admittedly more tightly packed) XLSX format becomes a 360MB XML file.
As far as my research has taken me, there are two commercial packages that allow output to the older binary file formats. They are:
Vb Net Read Excel File
Neither are cheap (500USD and 800USD respectively, I think). but both work independant of Excel itself.
What I would be curious about is the Excel output module for the likes of OpenOffice.org. I wonder if they can be ported from Java to .Net.
I agree about generating XML Spreadsheets, here's an example on how to do it for C# 3 (everyone just blogs about it in VB 9 :P) http://www.aaron-powell.com/linq-to-xml-to-excel
I've just recently used FlexCel.NET and found it to be an excellent library! I don't say that about too many software products. No point in giving the whole sales pitch here, you can read all the features on their website.
It is a commercial product, but you get the full source if you buy it. So I suppose you could compile it into your assembly if you really wanted to. Otherwise it's just one extra assembly to xcopy - no configuration or installation or anything like that.
I don't think you'll find any way to do this without third-party libraries as .NET framework, obviously, does not have built in support for it and OLE Automation is just a whole world of pain.
Just want to add another reference to a third party solution that directly addresses your issue: http://www.officewriter.com
(Disclaimer: I work for SoftArtisans, the company that makes OfficeWriter)
I have written a simple code to export dataset to excel without using excel object by using System.IO.StreamWriter.
Below is the code which will read all tables from dataset and write them to sheets one by one. I took help from this article.
Here's a way to do it with LINQ to XML, complete with sample code:
It's a little complex, since you have to import namespaces and so forth, but it does let you avoid any external dependencies.
(Also, of course, it's VB .NET, not C#, but you can always isolate the VB .NET stuff in its own project to use XML Literals, and do everything else in C#.)
Some 3rd party component vendors like Infragistics or Syncfusion provide very good Excel export capabilities that do not require Microsoft Excel to be installed.
Since these vendors also provide advanced UI grid components, these components are particularly handy if you want the style and layout of an excel export to mimic the current state of a grid in the user interface of your application.
Excel Not Opening Xlsx Files
If your export is intended to be executed server side with emphasis on the data to be exported and with no link to the UI, then I would go for one of the free open source options (e.g. ExcelLibrary).
I have previously been involved with projects that attempted to use server side automation on the Microsoft Office suite. Based on this experience I would strongly recommend against that approach.
Hi this solution is to export your grid view to your excel file it might help you out
You can create nicely formatted Excel files using this library:http://officehelper.codeplex.com/documentation
See below sample:
See below sample:
where sample look like this:
The simplest and fastest way to create an Excel file from C# is to use the Open XML Productivity Tool. The Open XML Productivity Tool comes with the Open XML SDK installation. The tool reverse engineers any Excel file into C# code. The C# code can then be used to re-generate that file.
An overview of the process involved is:
- Install the Open XML SDK with the tool.
- Create an Excel file using the latest Excel client with desired look. Name it
DesiredLook.xlsx
. - With the tool open
DesiredLook.xlsx
and click the Reflect Code button near the top. - The C# code for your file will be generated in the right pane of the tool. Add this to your C# solution and generate files with that desired look.
As a bonus, this method works for any Word and PowerPoint files. As the C# developer, you will then make changes to the code to fit your needs.
I have developed a simple WPF app on github which will run on Windows for this purpose. There is a placeholder class called
GeneratedClass
where you can paste the generated code. If you go back one version of the file, it will generate an excel file like this:C# Read Excel File Example
Some useful Excel automation in C# , u can find from the following link.
bolton.
Look at samples how to create Excel files.
C Read Excel File Example
There are examples in C# and VB.NET
C Read Excel File
It manages XSL XSLX and CSV Excel files.