问题
Starting with Visual Studio RC, Visual Studio 2015 appears to no longer support the Office Add-In project types from Visual Studio Tools for Office (VSTO). Lots of googlin' and questions to PMs in the MS blogs have revealed no useful information; but perhaps other in the community know more. Opening a VSTO project yield "(incompatible)". so:
- what is the status of VSTO and Visual Studio 2015
- Is there a workaround to open the old project types in VS 2015
I don't have 2013 anymore because i wiped that machine...
回答1:
Do you have the Community edition of VS installed?
Try to install https://aka.ms/getlatestofficedevtools .
回答2:
I am using VS 2015 Enterprise and I solved it with follow steps.
Edit office project 's .Csproj file with an XML editor find node: project\PropertyGroup, delete ProjectTypeGuids node;
close .sln.
reopen .sln.
My ProjectTypeGuids is <ProjectTypeGuids>{BAA0C2D2-18E2-41B9-852F-F413020CAA33};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>.
It seems VS can't recognize the typeGuids.
/**********Thanx Mogsdad for format my code**********/
When i try debug this project,i found it cant be debuged.Because it's projectType has losed.So i recover the .csproj file.
I notice another config node @<Project><ProjectExtensions><VisualStudio><FlavorProperties><ProjectProperties>. This node has a attribute named ApplicationType and its value is 'XLS',i modified it to 'Excel',the project seems work fine.
回答3:
With the help from James Randal we found an answer. We created a brand new empty Sharepoint Add-in then compared a newly created .csproj XML with the OfficeDev PNP .csproj XML.
Deleting the GUID's above does not help as then Visual Studio does not recognize the project as a Sharepoint project.
Answer : Edit the .csproj XML to change <TargetOfficeVersion> 16.0 </TargetOfficeVersion> to be 16.1 worked for me. You will still need to right-click on Sharepoint Project and install missing features but it finishes without the error message now.
来源：https://stackoverflow.com/questions/31570661/vsto-outlook-add-ins-and-visual-studio-2015