Question

I was wondering if it were possible to perform an operation on every element returned in a LINQ query at the same time as performing the query itself.

Example:

var files = Directory.EnumerateFiles(@"C:\etc", "*.*", SearchOption.AllDirectories)
                     .Where(s => (s.ToLower().EndsWith(".psd")) 
                                 && 
                                 new FileInfo(s).Length > 500000);

finds all files within set criteria, but if I wanted to say trim “C:\” from each string that was returned, could I somehow say s = f(s) after the where clause or would this be a separate foreach each loop.

Thanks.

Answer 1

After the Where statement, you can add this

.Select( s => s.Replace(@"C:\",""));

That will return the string with C:\ stripped.