/* * C# Program to Display the Student Details using Select Clause LINQ */ using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; class Programs { public class Student { public string First { get; set; } public string Last { get; set; } public int ID { get; set; } public List Marks; public ContactInfo GetContactInfo(Programs pg, int id) { ContactInfo allinfo = (from ci in pg.contactList where ci.ID == id select ci) .FirstOrDefault(); return allinfo; } public override string ToString() { return First + "" + Last + " : " + ID; } } public class ContactInfo { public int ID { get; set; } public string Email { get; set; } public string Phone { get; set; } public override string ToString() { return Email + "," + Phone; } } public class ScoreInfo { public double Average { get; set; } public int ID { get; set; } } List students = new List() { new Student {First="Tom", Last=".S", ID=1, Marks= new List() { 97, 92, 81, 60 }}, new Student {First="Jerry", Last=".M", ID=2, Marks= new List() { 75, 84, 91, 39 }}, new Student {First="Bob", Last=".P", ID=3, Marks= new List() { 88, 94, 65, 91 }}, new Student {First="Mark", Last=".G", ID=4, Marks= new List() { 97, 89, 85, 82 }}, }; List contactList = new List() { new ContactInfo {ID=111, Email="Tom@abc.com", Phone="9328298765"}, new ContactInfo {ID=112, Email="Jerry123@aaa.com", Phone="9876543201"}, new ContactInfo {ID=113, Email="Bobstar@aaa.com", Phone="9087467653"}, new ContactInfo {ID=114, Email="Markantony@qqq.com", Phone="9870098761"} }; static void Main(string[] args) { Programs pg = new Programs(); IEnumerable studentQuery1 = from student in pg.students where student.ID > 1 select student; Console.WriteLine("Query : Select range_variable"); Console.WriteLine("Name : ID"); foreach (Student s in studentQuery1) { Console.WriteLine(s.ToString()); } Console.ReadLine(); } } /* Enter the Number : 2 Enter the Exponent :3 Result : 8