Microsoft.Office.Core Reference Missing - c#

Using the example provided in codeproject I am struggling to work out where I can find the reference to the library Microsoft.Office.Core.
I am getting the error "The referenced component 'Microsoft.Office.Core' could not be found."
I only have office 2007 enterprise edition and outlook 2003 installed on this system. Could this be the cause of this? Otherwise which specific dll am I supposed to be referencing?


You can add reference of Microsoft.Office.Core from COM components tab in the add reference window by adding reference of Microsoft Office 12.0 Object Library. The screen shot will shows what component you need.


None of the above answer helped me, i was using Visual Studio 2017. What I did is, installed Office/SharePoint Development using Visual Studio Installer.
After that, I was able to see 'office', this assembly contains Microsoft.Office.Core.
Hope this helps you.


You need to download and install the PIA (primary interop assemblies) for the version of Office you are using. Once installed you can then add a reference to your project and they will be available from the add reference dialog. Here are the links to download them...
Office 2010 PIA
Office 2007 PIA
Office 2003 PIA


After installing the Office PIA (primary interop assemblies), add a reference to your project -> its on the .NET tab - component name "Office"


If someone not have reference in .NET . COM (tab) or not have office installed on machine where visual was installed can do :
Download and install: Microsoft Office Developer Tools
Add references from:
C:\Program Files (x86)\Microsoft Visual Studio 11.0\Visual Studio Tools for Office\PIA\Office15


Now there is a nuget package for that.
https://www.nuget.org/packages/NetOffice.Core.Net40/
First I didn't find office in COM, so tried this nuget and it worked!


You can use this NuGet package which includes the interop assemblies in addition to the office assembly.
https://www.nuget.org/packages/Bundle.Microsoft.Office.Interop/


Have you actually gone to your references and added a .NET reference to the 'Microsoft.Office.Core' library? If you downloaded the example application, the answer would be yes. If that is the case, follow the advice in the article:
If your system does not have Microsoft Office Outlook 2003 you may have to change the References used by the "OutlookConnector" project. That is to say, if you received a build error described as "The type of namespace name 'Outlook' could not be found", you probably don't have Office 2003. Simply expand the project references, remove the afflicted items, and add the COM Library appropriate for your system. If someone has a dynamic way to handle this, I'd be curious to see you've done.
That should solve your problem. If not, let us know.


In case you are using Visual Studio 2012, for this to work and in order to make reference to Microsoft Office Core, you have to make the reference through Visual Studio by clicking on the top menu's Project, Add Reference, Extensions button and checking office which is now (14.0).


If you are not able to find PIA for Office 2013 then follow these steps:
Click on Solution Explorer in Visual Studio
Right click on your project name (not solution name)
Select 'Manage Nuget packages'
Click on Browse and search for PIA 2013, choose the shown PIA and click on Install.....
And you are done.


I have the same trouble. I went to Add references, COM tab, an select Microsoft Office 15.0 Objetct Library. Ok, and my problem ends.
part of my code is:
EXCEL.Range rango;
rango = (EXCEL.Range)HojadetrabajoExcel.get_Range("AE13", "AK23");
rango.Select();
// EXCEL.Pictures Lafoto = (EXCEL.Pictures).HojadetrabajoExcel.Pictures(System.Reflection.Missing.Value);
EXCEL.Pictures Lafoto = HojadetrabajoExcel.Pictures(System.Reflection.Missing.Value);
HojadetrabajoExcel.Shapes.AddPicture(#"D:\GENETICA HUMANA\Reportes\imagenes\" + Variables.nombreimagen,
Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoCTrue,
float.Parse(rango.Left.ToString()),float.Parse(rango.Top.ToString()), float.Parse(rango.Width.ToString()),
float.Parse(rango.Height.ToString()));


I faced the same problem when i tried to open my old c# project into visual studio 2017 version. This problem arises typically when you try to open a project that you made with previous version of VS and open it with latest version.
what i did is,i opened my project and delete the reference from my project,then added Microsoft outlook 12.0 object library and Microsoft office 12.0 object libraryMicrosoft outlook 12.0 object library


In my case when I added "Microsoft Excel Object Library" and "Microsoft Office Object Library" from Reference->COM then the reference error goes away.

Related

How to get Microsoft PIAs to be available references in Visual Studio for Excel on Office 365?

I have not done any programming for quite some time, so apologies if this is simple. I have had a look on several forums but haven't found quite what I am looking for.
I have Microsoft Office 365 ProPlus with Excel Version 1902. The Office version was pushed centrally form IT; a click to run type deployment so I didn't have options to ensure PIAs were enabled.
I am using C# in Visual Studio Community 2017.
I am wanting to include the Microsoft.Office.Interop.Excel reference to allow me to do certain operations in Excel from within my application.
When I attempt to Add the reference to my project, under assemblies there are non of the PIAs available.
However when I look under the COM options there is the "Microsoft Excel 16.0 Object Library" available.
How do I install or enable the PIAs so that I can use these with Office 365?

VS Community 2013 cannot add reference to office.interop

My settings :
- Office 2010 is fully installed and running with default settings including .Net development,
- Office 2010 Primary Interop Assemblies (v14) are installed (checked with control panel programs list)
Problem : In C# or F# projects, I cannot add a reference to Microsoft.Office.Interop in the Solution Explorer window of Visual Studio 2013 Community Edition. Interop are not listed anywhere (COM, Assemblies,...)
Question : Does VS 2013 Community Edition forbid reference to Office PIA as opposed to full VS 2013 PRO ?
If not, what should I check ?
Thanks.

There is no generic reference for Office, rather, they are application specific. Under the COM tab, you can add a refernce to any of the following. The version number will vary based on the version of Office you have installed.
Microsoft Excel 14.0 Object Library
Microsoft Outlook 14.0 Object Library
Microsoft Powerpoint 14.0 Object Library
Microsoft Word 14.0 Object Library

The only real difference between the Community and Pro SKUs is that Community omits the Office dev scenarios.
My guess is that the list of dirs that are used to populate the "add reference" dialog is modified in Community, with well-known Office binary dirs removed. This is just speculation, but it would explain what you are seeing.
If you can find the location on disk of the PIAs, you should still be able to add a reference via plain "browse." AFAIK, Community doesn't explicitly block this, it just doesn't help like Pro+.

Cannot add Excel to Project as a COM object

I am needing to create an Excel spreadsheet from a c# project, but I cannot add the reference to the Excel COM object.
I am using Visual Studio 2010 and office 2013. I've clicked on the References folder and selected Add Reference, and then navigated to the COM tab, setting them in alphabetical order. I looked through, but there was no reference to Microsoft.Office.Interop.Excel.
Trying to resolve the issue, I downloaded and installed the PIAs for Office 2010, but references still were not added. I'm not sure where these files would be located on the hard-drive, so I cannot just browse to them (or copy one to the project Resource folder and reference it there).
Does anyone have an idea as to why I cannot see the references?
Additional Information
I managed to get the Microsoft.Office.Interop.dll file from a coworker for Office 2013, but I was not able to reference it from my project since I am working in .NET 3.5. My manager does not want me to update the project to .NET 4.0, so it looks like I will need to use the Office 2010 PIAs I installed. Unfortunately, installing them did not add them to the list, and I haven't been able to find the dll's to add them by browsing to them.
I doubt that it will make a difference, but my dev system is Windows 8.

Can't locate Microsoft.Office.Interop.Word in Reference List

I was given this solution to a problem I had, since I didn't know how to integrate MS Word with C#: http://www.dotnetperls.com/word
I looked into this solution, and I can't locate Microsoft.Office.Interop.Word in the reference list. I can't find it under COM Objects either. What am I missing? I am using Visual Studio Express 2012.
EDIT:
The answer to this question is that you HAVE to install MS Office on your computer.

You need Microsoft Word xx Object Library.

You can download the Primary Interop Assemblies from here.
http://www.microsoft.com/en-us/download/details.aspx?id=3508

You may also use NuGet Package Manager in order to install the reference.
Go to Project -> Manage NuGet Packages...
Search for "Interop.Word" and install that package.
Good thing about it is that you don't need to think about where the dll is located. When another person will check out the solution, NuGet will get all needed packages onto their machine.

you might need to install the assemblies separately,if you did not choose to install them during your office installation.
MSDN:
You must install the Microsoft Office primary interop assemblies
(PIAs) in the global assembly cache of your development computer
before you can perform certain development tasks. Typically, the PIAs
are installed automatically when you install Office on the
development computer. However, in some cases you might need to install
the PIAs separately.
More here

Check if the library (Microsoft.Office.Interop.word) is present in the assembly folder of windows (C:\Windows\assembly) else you can install it from http://www.microsoft.com/en-us/download/details.aspx?id=3508
Now you just need locate it in your visual studio.
Right click on the consoleApplication(or name of you application) in SolutionExplorer window and
Go to Add -> References-> Browse and find C:\Windows\assembly\GAC_MSIL\Microsoft.Office.Interop.word or similar directory.
press ok and your can now use the library in your application.

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

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.

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> 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 "Primary Interop Assemblies", 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).

Just had this problem myself and accepted answer didn't help me but I solved it with:
Add reference > Browse > C: > Windows > assembly > GAC > Microsoft.Office.Interop.Excel > 12.0.0.0_etc > Microsoft.Office.Interop.Excel.dll

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

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

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.

Add reference > Browse > C: > Windows > assembly > GAC > Microsoft.Office.Interop.Excel > 12.0.0.0_wasd.. > Microsoft.Office.Interop.Excel.dll

I found it located under Assemblies->Extensions in VS2013.

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

its in the com component, named:
"Microsoft Office 14 Object Library"

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 <--
This was located on the Office Documentation and Download page. Scroll down to Tools Downloads. There's also currently one for VS2013.

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.

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

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

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 & Features > VS 2012 > Right click Change > Repair) and added the Microsoft Office component. After that the same solution started working.

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".

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