In my experience, C# can be coded almost exactly like Java 8; just ignore the extra features C# has. (I don't know why you would, but it's certainly possible.) Do you have more specific complaints?
Plumtree Portal / BEA Aqualogic Interaction / Oracle WebCenter documentation is/was a perfect example of this. When I was working on it, all of their code samples had a footnote that said something like "all code examples work in Java or C# unless otherwise noted". I don't recall ever coming across a language specific example.