问题
I can create new MVC projects and they work and run however trying to open an existing project is not working at all
I tried the following changing the project type to:
<ProjectTypeGuids>{F85E285D-A4E0-4152-9332-AB1D724D3325};{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
(this worked on migrating a project from Asp.Net MVC preview 1 to preview 2 BTW)
Changed the Reference to:
<Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
</Reference>
I tool this from a new project I created so i know that should be ok ( i even hardcoded the path to the same result)
Still i get the dreaded
The project file '.....csproj' cannot be opened. The project type is not supported by this installation.
I also tried devenv /setup and installing the sp1 for visual studio
the project i m trying to open is this one (a DevExpress sample of a grid working on ASP.NET MVC)
回答1:
Just had a similar problem when taking an older MVC / Azure WebRole project into VS 2012 with MVC4. The trick was to edit the .CSPROJ like this:
10c11
< <ProjectTypeGuids>{F85E285D-A4E0-4152-9332-AB1D724D3325};{349c5851-65df-11
da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
---
> <ProjectTypeGuids>{E3E379DF-F4C6-4180-9B81-6769533ABE47};{349c5851-65df-11
da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
i.e. change the first one from {F8... to {E3E3... (which is apparently MVC4). This has to be done outside of Visual Studio, in a text editor, and then open the solution and "Reload" the project that gave an error - this will trigger VS to migrate it to VS 2012.