How do you add an index field to Linq results

Question

Lets say I have an array like this:

string [] Filelist = ...

I want to create an Linq result where each entry has it's position in the array like this:

var list = from f in Filelist
    select new { Index = (something), Filename = f};

Index to be 0 for the 1st item, 1 for the 2nd, etc.

What should I use for the expression Index= ?

Answer 1

Don't use a query expression. Use the overload of Select which passes you an index:

var list = FileList.Select((file, index) => new { Index=index, Filename=file });

Answer 2

string[] values = { "a", "b", "c" };
int i = 0;
var t = from v in values
select new { Index = i++, Value = v};