Mega Code Archive

 

Categories / C# Tutorial / LINQ

 

Grouping by substring

using System; using System.Collections.Generic; using System.Data; using System.Linq; using System.Text; public class MainClass{    public static void Main(string[] args){             String[] TestData = {"One", "Two", "Three", "Four",                               "Five", "Six", "Seven", "Eight",                                "Nine", "Ten"};          var ThisQuery = from ThisElement in TestData                          group ThisElement                           by ThisElement.Substring(0, 1)                          into Groups                          orderby Groups.Key                          select Groups;          foreach (var ThisElement in ThisQuery)          {             Console.WriteLine(ThisElement.Key);             foreach (String ThisText in ThisElement)                Console.WriteLine(ThisText);          }    } }