C Linq Apply a mapping function to each element in an IEnumerable

Question

I ve been looking for a way to transform each element of an IEnumerable into something else using a mapping function  in a Linq-compatible way  but I haven t found anything  For a  very simple  example  it should be able to do something like IEnumerable lt int gt  integers   new List lt int gt      1  2  3  4  5    IEnumerable lt string gt  strings   integers Transform i   gt  i ToString      But I haven t found anything  I mean  it s pretty straightforward to write an extension method that accomplishes that  basically  all it requires is wrapping the source Enumerator into a new class and then writing a bit of boilerplate code for delegating the calls to it   but I would have expected this to be a fairly elementary operation  and writing it myself feels like reinventing the wheel - I can t shake the feeling that there may be a built-in way which I should be using  and I ve just been too blind to see it  So    is there something in Linq that allows me to do what I described above

User · Accepted Answer

You can just use the Select   extension method   IEnumerable lt int gt  integers   new List lt int gt      1  2  3  4  5    IEnumerable lt string gt  strings   integers Select i   gt  i ToString       Or in LINQ syntax   IEnumerable lt int gt  integers   new List lt int gt      1  2  3  4  5     var strings   from i in integers               select i ToString

User · Answer

You re looking for Select which can be used to transform project the input sequence    IEnumerable lt string gt  strings   integers Select i   gt  i ToString

[c#] C#/Linq: Apply a mapping function to each element in an IEnumerable?

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