What’s new in WCF 4.5? a single WSDL file

This is the second post in the WCF 4.5 series, and this time we’ll talk about WSDL files.

Previous posts:

1. What’s new in WCF 4.5? let’s start with WCF configuration

A few weeks ago, I posted about the difference between exposing the service metadata through WSDL and through a MEX endpoint. One of the things I noted in the post was that the metadata exposed through a WSDL file is actually one part of the overall metadata – in addition to the WSDL file, there is usually an additional set of files, XSD files, that contain the data contracts of the service. For WCF 4 and previous versions, the schema part in the WSDL is a set of import directives for additional files:

So what has changed in WCF 4.5? When you browse to a WCF 4.5 service’s metadata URL, you will see the following WSDL options:

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