Ensure that HttpConfiguration.EnsureInitialized()

Question

I\'ve installed Visual Studio 2013 and when I run my app I get the error below.

I\'ve got no idea as to where I\'m to initialized this object.

What to do?

Answer 1

One typically gets this exception when route templates in "Attribute Routing" are not proper.

For example, i got this when i wrote the following code:

[Route("{dirName:string}/contents")] //incorrect
public HttpResponseMessage GetDirContents(string dirName) { ... }

In route constraints syntax {parameter:constraint}, constraint by default is of type string. No need to mention it explicitly.

[Route("{dirName}/contents")] //correct
public HttpResponseMessage GetDirContents(string dirName) { ... }