ASP.net MVC RTM – “project type is not supported”

asp.net-mvcvisual studio

After installing ASP.net MVC, when I attempt to load a existing or a new MVC application (straight from New Project – A project for creating an application using the ASP.NET MVC framework (1.0) (.NET Framework 3.5)) I get the following error:

Microsoft Visual Studio

The project file 'path' cannot be opened.

The project type is not supported by this installation.

OK Help

Tried reinstalling which didn't help. Tried devenv /setup which also didn't help.

Any ideas?

Best Answer

The reason was because I didn't have the Visual Web Development part of VS installed. I only had the C# language. As such, MVC didn't check and installed successfully but couldn't use the underlying part.

After installing the Web Dev bit everything worked as expected...

Related Solutions

Asp.net-mvc – ASP.NET MVC HandleError

[HandleError]

When you provide only the HandleError attribute to your class (or to your action method for that matter), then when an unhandled exception occurs MVC will look for a corresponding View named "Error" first in the Controller's View folder. If it can't find it there then it will proceed to look in the Shared View folder (which should have an Error.aspx file in it by default)

[HandleError(ExceptionType = typeof(SqlException), View = "DatabaseError")]
[HandleError(ExceptionType = typeof(NullReferenceException), View = "LameErrorHandling")]

You can also stack up additional attributes with specific information about the type of exception you are looking for. At that point, you can direct the Error to a specific view other than the default "Error" view.

For more information, take a look at Scott Guthrie's blog post about it.

Asp.net mvc 1.0 “project type is not supported” on Visual Studio 2008

Just some things to try:

Have you updated Visual Studio 2008 to SP1 (google for download - its a bigge)?

Have you removed all previous traces of ASP.Net MVC Beta and RC installs?

Does the project contain MSTest tests and the version you are using does not support MSTest?

How did you install IIS7 (or rather 7.5 on Windows 7)? Did you do this via Add Remove Windows Features, did you enable ASP.Net when you drill into Internet Information Server ?

Can you create a new ASP.Net MVC application does this show in Add New Projects? And copy the Web.config over to the existing one? It may be possible it was created with a previous version and the assembly identies are no longer than same.

When you install Visual Studio 2008 did you untick the Web application bit in the Customize/Advance by any chance (cant recall exact wording) but IIRC it appears as sibling on the branch where Visual C# option is.