Anders Hejlsberg worked at Borland for many years and was heavy into creating Delphi. He was hired away from Borland to Microsoft. Having said that, it's more the IDE than the actual language. Delphi and C# aren't similar syntactically. C# is a C styled language while Delphi is a Pascal styled language (well it is Pascal/Object Pascal in everything but name). There are some similarities though, for example, C# has standard data types along with objects like Delphi where Java does not (at least last time I checked).
Visual Studio early on and Visual Studio today are very similar to the Borland dev studio when Hejlsberg was working there. I've used both languages/IDEs in my career extensively, albeit I haven't used Delphi in probably 15-20 years.
