do i need to install Microsoft Excel to be able to export xls file in c#,
I have my application it run in my pc but when I test it in another pc that it don't contain
Excel the application got errors !!
I see this link Using Microsoft.Office.Interop.Excel without actually having Excel?, I called my client and he tell me that he use open office and Microsoft office, I can use more than library
Depending on what you need you can use some library (free or commercial) for this:
OpenXML 2.0 from MS
Aspose.Cells (commercial)
Flexcel (commercial)
Create Excel (.XLS and .XLSX) file from C#
Related
I am developing a winform desktop application that uses the Microsoft.Office.Interop.Excel library for processing Excel files.
I have included this file in the References section of my program, but when I build it as an exe and send it to another user's computer, they are required to download a Microsoft driver in order to use the Excel integration features.
How can I include the dll when I build my program, so that my users don't need to download and install a separate driver?
Updated to add:
My users all have Microsoft Excel installed on their computers, so this is a different issue than the related question.
Here is the error message the user receives:
As i remember Microsoft.Office.Interop.Excel requires Microsoft Office to be installed on your target machine. I recommend you to use ExcelDataReader which allows you to work with Excel workbooks and does not require any additional drivers etc. Check it out!
i have to convert a word doc into pdf and print it and Microsoft.Office.interop offers an easy way to do it but client machine has be installed with 2013 or higher.
My question is. is there any way that i could convert the word file into pdf using Server's Microsoft office because i can't expect client have 2013 installed on their pc
if no is there any easy and free way to convert word file into pdf.?
Thanks all
Word Automation Services (part of SharePoint) can convert Word documents to PDF (and other file formats) in the server environment.
It is not recommended to use Office Interop on server.
You can use OpenXML for working with office docs.
There are many examples available here.
For conversion, you will have to use separate plugin, and I'm not aware of a free version to convert to PDF.
I'm working to create and read MS Excel file in asp.net web application.
I'm not sure that it requires to install Microsoft Excel on server or not.
I don't want to install any licensed product on the server like MS office etc.
Please let me know how i can implement this functionality without installing MS Excel on the server or it is necessary to install MS excel on server?
Thanks
It depends on what you're doing, but more than likely, all you need is the Microsoft Access Database Engine.
This download will install a set of components that facilitate the
transfer of data between existing Microsoft Office files such as
Microsoft Office Access 2010 (*.mdb and .accdb) files and Microsoft
Office Excel 2010 (.xls, *.xlsx, and *.xlsb) files to other data
sources such as Microsoft SQL Server. Connectivity to existing text
files is also supported. ODBC and OLEDB drivers are installed for
application developers to use in developing their applications with
connectivity to Office file formats.
Edit, in response to
I just want to read and write MS excel files but i don't want to install anything on the server.
You can try EPPlus, which seems to solve your problem; though I've never tried it.
EPPlus is a .net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx).
No it isn't necessary to install a full version of Microsoft Office. You can just use ODBC or OLE to open the files, provided you just need to do simple operations like read rows in worksheets (as if they were tables).
Use http://www.connectionstrings.com/ to look up the various .NET ways of accessing Excel using ODBC and OLE.
Effectively you need to treat the .xls and .xslx files as if you were querying an SQL database.
I have some code that parses an excel file for data.
It works in C# console but not in ASP.net.
For some reason the snippet below fails in my asp.net application:
After the Cells[i,j] no intellisense is provided and the value2 property is missing.
Help, both apps are referencing using Microsoft.Office.Interop.Excel;
var g = xlRange.Cells[i, j].value2.ToString();
Interop is not supported in sever-scenarios (like ASP.NET) by MS.
There are many options to read/edit/create Excel files without Interop:
MS provides the free OpenXML SDK V 2.0 - see http://msdn.microsoft.com/en-us/library/bb448854%28office.14%29.aspx (XLSX only)
This can read+write MS Office files (including Excel).
Another free option see http://www.codeproject.com/KB/office/OpenXML.aspx (XLSX only)
I am using Microsoft.Office.Interop.Excel to read an excel file and change some cells. It works perfectly with xls files.
I would like to know that, if I deploy the application to the client. They have to install the whole Microsoft Office application? as I think the only dll will not work, right?
Thanks in advance.
Yes, the clients must have Office installed.
I must add a warning, Interop is awkward you better use other (open source) libraries like NPOI or EPPlus for .xlsx- 2007 excel sheets for automation.
Update:
Additional to the awkward of interop, It's unsafe when using in servers!!! see here:
"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."
If you know there are only .xslx files, you don't need Excel if you use the Open XML Api from Microsoft. It can read Excel files perfectly.
In case were Open XML and Excel interop is not an option, I would recommend Aspose. They have a nice suit of Office compatible components, including for Excel. And they are built for the server. We are using them since 5 years and it works pretty well.