97 lines
2.7 KiB
C#
97 lines
2.7 KiB
C#
/*
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* C# Program to Produce a filtered sequence of elements that contain only one property of each Student
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*/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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class Programs
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{
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public class Student
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{
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public string First { get; set; }
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public string Last { get; set; }
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public int ID { get; set; }
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public List<int> Marks;
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public ContactInfo GetContactInfo(Programs pg, int id)
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{
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ContactInfo allinfo =
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(from ci in pg.contactList
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where ci.ID == id
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select ci)
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.FirstOrDefault();
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return allinfo;
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}
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public override string ToString()
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{
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return First + "" + Last + " : " + ID;
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}
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}
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public class ContactInfo
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{
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public int ID { get; set; }
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public string Email { get; set; }
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public string Phone { get; set; }
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public override string ToString()
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{
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return Email + "," + Phone;
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}
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}
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public class ScoreInfo
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{
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public double Average { get; set; }
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public int ID { get; set; }
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}
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List<Student> students = new List<Student>()
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{
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new Student {First="Tom", Last=".S", ID=1, Marks= new List<int>()
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{
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97, 92, 81, 60
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}},
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new Student {First="Jerry", Last=".M", ID=2, Marks= new List<int>()
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{
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75, 84, 91, 39
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}},
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new Student {First="Bob", Last=".P", ID=3, Marks= new List<int>()
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{
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88, 94, 65, 91
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}},
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new Student {First="Mark", Last=".G", ID=4, Marks= new List<int>()
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{
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97, 89, 85, 82
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}},
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};
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List<ContactInfo> contactList = new List<ContactInfo>()
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{
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new ContactInfo {ID=111, Email="Tom@abc.com", Phone="9328298765"},
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new ContactInfo {ID=112, Email="Jerry123@aaa.com", Phone="9876543201"},
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new ContactInfo {ID=113, Email="Bobstar@aaa.com", Phone="9087467653"},
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new ContactInfo {ID=114, Email="Markantony@qqq.com", Phone="9870098761"}
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};
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static void Main(string[] args)
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{
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Programs pg = new Programs();
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IEnumerable<String> studentQuery2 =
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from student in pg.students
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where student.ID > 1
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select student.Last;
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Console.WriteLine("\r\n studentQuery2: select range_variable.Property");
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foreach (string s in studentQuery2)
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{
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Console.WriteLine(s);
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}
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Console.ReadLine();
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}
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}
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/*
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studentQuery2: select range_variable.Property
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.M
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.P
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.G |