Find longest string in Datatable column

Question

I would like to know If It\'s possible to create a \"one-line\" Linq to retrieve longest string value of specific Datatable column, meaning that all column data (numbers, dates,

Answer 1

You are looking for ArgMax - a value such that it has max value of some kind of property. Standard Linq doesn't provide ArgMax but you can implement it via Aggregate (i.e. get a single value from a sequence):

 string maxString = dt
   .AsEnumerable()
   .Select(row => row[mycolumn].ToString())
   .Aggregate((s, a) => a.Length > s.Length ? a : s);