Grouping by substring : Group « LINQ « C# / CSharp Tutorial

Home
C# / CSharp Tutorial
1.Language Basics
2.Data Type
3.Operator
4.Statement
5.String
6.struct
7.Class
8.Operator Overload
9.delegate
10.Attribute
11.Data Structure
12.Assembly
13.Date Time
14.Development
15.File Directory Stream
16.Preprocessing Directives
17.Regular Expression
18.Generic
19.Reflection
20.Thread
21.I18N Internationalization
22.LINQ
23.GUI Windows Forms
24.Windows Presentation Foundation
25.Windows Communication Foundation
26.Workflow
27.2D
28.Design Patterns
29.Windows
30.XML
31.XML LINQ
32.ADO.Net
33.Network
34.Directory Services
35.Security
36.unsafe
C# / C Sharp
C# / C Sharp by API
C# / CSharp Open Source
C# / CSharp Tutorial » LINQ » Group 
22.46.5.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(01)
                         into Groups
                         orderby Groups.Key
                         select Groups;

         foreach (var ThisElement in ThisQuery)
         {
            Console.WriteLine(ThisElement.Key);
            foreach (String ThisText in ThisElement)
               Console.WriteLine(ThisText);
         }
   }
}
22.46.Group
22.46.1.Select from a Group
22.46.2.Group words by length
22.46.3.Using group to group all employees by department
22.46.4.Group Query
22.46.5.Grouping by substring
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.