What reference do I need to use Microsoft Office Interop Excel in NET

Question

I am interested in using C  to manipulate Automate Excel files   After browsing the web I have found VSTO but it seems you can not use that in Visual Studio Express Edition so I can not use that   Just few minutes ago I noticed a question in this site that used this namespace in its code   Microsoft Office Interop Excel  So I am wondering if all I need to use that is add necessary reference and if so which reference to add    UPDATE  I installed  Primary Interop Assemblies  as the accepted answer suggested but for some reason they are still missing in the Add Reference dialog under   NET  but they are present in GAC    So I just added the reference using  Browse  and located Microsoft Office Interop Excel dll in GAC folder   But looking for similar questions on this site regarding adding reference from GAC it seems this is not recommended

User · Answer

The best option since office 2007 is using Open XML SDK for it  We used Word Interop but it halt sometimes  and it is not recommend for Microsoft  to use it as a server side document formatting  so Open XML SDK lets you creates word documents on DOCX and Open XML formats very easily  It lets you going well with scability  confidence   the files  if it is corrupted can be rebuild    and another very fine characteristics

User · Answer

Just add reference of Microsoft Office Interop Excel   It includes MicroSoft Excel related classes  no need to add more references

User · Answer

Here is super solid solution  you just need have excell dll in your Debug Release folder Mine is 77 824 bytes  I downloaded it as a file  this also explain why some people have Debug compiled but Release not or vice versa   Trento

User · Answer

Make sure your project is 32 bit   I had this problem  as soon as I ticked  Prefer 32 bit and rebuilt  all the Office Interop assemblies where available in Reference- Assemblies- Search  Office

User · Answer

Update  thanks user2347528  These assemblies are available as NuGet packages  which is much easier than my original answer  You can install by either right clicking on References in your project and selecting Manage NuGet packages    and searching for one of the packages listed below  or install using the Package Manager Console  PM gt  Install-Package Microsoft Office Interop Excel   Microsoft Office Interop Excel Microsoft Office Interop Word Microsoft Office Interop Outlook Microsoft Office Interop PowerPoint Microsoft Office Interop Graph   These are available as  quot Primary Interop Assemblies quot   which can be installed with Office  or downloaded and installed separately  How to  Install Office Primary Interop Assemblies  Once those are installed  you can reference them in your project in the Add Reference dialog  under  NET  If you do not see those Microsoft Office Interop assemblies listed  then they have not been installed yet  Install them from your setup  or download and install them separately  see my link above for the downloads

User · Answer

I found it located under Assemblies- Extensions in VS2013

User · Answer

Answers didn t help me to solve my problem  I couldn t find  and browse  the assemblies although I installed them using Microsoft s msi installer  For me  the excel assembly is located under C  Windows assembly GAC MSIL Microsoft Office Interop Excel 14 0 0 0  71e9bce111e9429c Microsoft Office Interop Excel dll

User · Answer

I just had the same problem  but none of these answers helped me   I did find the dll on my pc in the location Mostey noted   C  Windows assembly GAC MSIL Microsoft Office Interop Excel 14 0 0 0  71e9bce111e9429c Microsoft Office Interop Excel dll   but this is not the one that was referenced in the project I was trying to get building   The reference in our project in Visual Studio 2012 was pointing to C  Program Files  x86  Microsoft Visual Studio 11 0 Visual Studio Tools for Office    This location was empty for me  but it worked fine for everyone else   It took a number of tries  but I finally tracked down a working installer   I hope this saves others the same hassle   --   Office Tools Bundle installer for VS2012  lt --  This was located on the Office Documentation and Download page   Scroll down to Tools Downloads   There s also currently one for VS2013

User · Answer

its in the com component  named   Microsoft Office 14 Object Library

User · Answer

1 Download and install  Microsoft Office Developer Tools  2 Add references from   C  Program Files  x86  Microsoft Visual Studio 11 0 Visual Studio Tools for Office PIA Office15

User · Answer

I guess what you are trying to do is add Microsoft Office Interop Excel with using statement with out adding its reference in your application  in that case it wont be found  Before calling it with using statement you need to add a reference to ur application  Right click on References and add the Excel Interop reference

User · Answer

If you have Microsoft Office installed  then you should be able to add a reference to Interop Excel   For example  the PC I m typing this on has MSVS 2010 C  Express and Office 2010   I can add a reference to Microsoft Office Interop Excel 11 0 0 0    Hope that helps

User · Answer

Just had this problem myself and accepted answer didn t help me but I solved it with   Add reference  gt  Browse  gt  C   gt  Windows  gt  assembly  gt  GAC  gt  Microsoft Office Interop Excel  gt  12 0 0 0 etc  gt  Microsoft Office Interop Excel dll

User · Answer

Add reference   Browse   C    Windows   assembly   GAC   Microsoft Office Interop Excel   12 0 0 0 wasd     Microsoft Office Interop Excel dll

User · Answer

I had the same issue and the Microsoft Office Interop was not appearing in  Add Reference  option once I upgraded VS2012 to VS2015  I basically repaired the installation  Control Panel   Programs  amp  Features   VS 2012   Right click Change   Repair  and added the Microsoft Office component  After that the same solution started working

[c#] What reference do I need to use Microsoft.Office.Interop.Excel in .NET?

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