Query by position : Index « LINQ « C# / C Sharp

Home
C# / C Sharp
1.2D Graphics
2.Class Interface
3.Collections Data Structure
4.Components
5.Data Types
6.Database ADO.net
7.Date Time
8.Design Patterns
9.Development Class
10.Event
11.File Stream
12.Generics
13.GUI Windows Form
14.Internationalization I18N
15.Language Basics
16.LINQ
17.Network
18.Office
19.Reflection
20.Regular Expressions
21.Security
22.Services Event
23.Thread
24.Web Services
25.Windows
26.Windows Presentation Foundation
27.XML
28.XML LINQ
C# / C Sharp » LINQ » IndexScreenshots 
Query by position
 
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Reflection;

class Person {
    int _id;
    int _idRole;
    string _lastName;
    string _firstName;

    public int ID {
        get return _id; }
        set _id = value; }
    }

    public int IDRole {
        get return _idRole; }
        set _idRole = value; }
    }

    public string LastName {
        get return _lastName; }
        set _lastName = value; }
    }

    public string FirstName {
        get return _firstName; }
        set _firstName = value; }
    }
}
class Program {
    static void Main(string[] args) {
        List<Person> people = new List<Person> {
               new Person ID = 1, IDRole = 1, LastName = "A", FirstName = "B"},
               new Person ID = 2, IDRole = 2, LastName = "G", FirstName = "T"},
               new Person ID = 3, IDRole = 2, LastName = "G", FirstName = "M"},
               new Person ID = 4, IDRole = 3, LastName = "C", FirstName = "G"}
            };
        var query = people.Select((p, index=> new Position = index, p.FirstName, p.LastName });
    }
}

 
Related examples in the same category
1.Use an indexed Where clause (where the length of the number's name is shorter than its value)
2.Select - Indexed: prints the value of the integer and whether it matches its index in the array
3.Use index when querying array with LINQ
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.