C# ASP.NET MVC 4 Web API XmlDocumentationProvider error

Question

When working with a Web API template in an ASP.NET MVC 4 project, trying to compile I get this error:

'Solution.Web.Api.Areas.HelpPage.XmlDocumentationProvider' does not implement interface member 'System.Web.Http.Description.IDocumentationProvider.GetResponseDocumentation (System.Web.Http.Controllers.HttpActionDescriptor)'

It seems the class doesn't implement all interface methods. However, I didn't create any code yet or apply any code change to the default project.

Would you know what is causing this problem?

Answer 1

Mark's answer to update the Web API Help Page worked for me. Here are the commands I ran to make it happen:

In Visual Studio 2013:

• TOOLS -> Library Package Manager -> Package Manager Console
• Paste the following into the Package Manager Console:

Update-Package Microsoft.AspNet.WebApi.HelpPage

• Hit Enter, cross fingers, and post alternative solutions if you find them!