Im trying to convert some Delphi code to c# and I\'ve come across a problem...
In Delphi I\'ve decalared a new type
Type TData = Array of Extended
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It sounds like you want something similar to a C/C++ typedef, which unfortunately I don't think is supported in C#. You can make local alias within a single source file (see below), but the alias won't be visible anywhere else.
To create a local alias, add this at the top of your source file:
using Data = System.Double;