using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CompareLab
{
abstract class Person
{
public string Name { get; set; }
public string Id { get; set; }
public Person( string name,int ID)
{
Name = name;
Id = ID;
}
public abstract void DisplayDetails( );
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Compare
{
class Student: Person,IComparable
{
public string Course { get; set; }
public int Year { get; set; }
public Student( string name,int ID,string course,int year):base(name,ID)
{
Course = course;
Year = year;
}
public override void DisplayDetails( )
{
Console.WriteLine("{0}{1} {2} {3}", Name.PadRight( 15 ), Id, Course, Year);
}
public int CompareTo(object obj)
{
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace Compare
{
class Program
{
public static List<Person> DataList = new List<Person>();
static void Main(string[] args)
{
bool quit = false;
do
{
var option = ShowMenu( );
switch ( option )
{
case 1:
CreateStudentData( );
break;
case 2:
DisplayStudentData( );
break;
case 3:
DisplayDataByIdReversed( );
break;
case 4:
quit = true;
break;
default:
Console.WriteLine( "Invalid Entry,please try again" );
break;
}
} while ( !quit );
}
public static int ShowMenu( )
{
Console.WriteLine( "\t\t1 Create student data" );
Console.WriteLine( "\t\t2 Display student data" );
Console.WriteLine( "\t\t3 Display student data by reverse ID order");
Console.WriteLine( "\t\t4 Exit" );
Console.WriteLine("\n");
//Console.Write("\t\tEnter Option Here: ");
//var option = Int32.Parse( Console.ReadLine( ) );
int option;
while (true)
{
Console.Write("\t\tEnter Option Here: ");
try
{
option = Int32.Parse(Console.ReadLine());
if (option < 1 || option > 4)
{
throw new Exception();
}
}
catch
{
Console.WriteLine("Invalid input,must be choice 1-4");
continue;
}
break;
}
return option;
}
public static void CreateStudentData()
{
DataList.Add(new Student( "Bob Smith" ,1234,"Software Development",2));
DataList.Add(new Student("Mary Sue", 1233, "Software Development", 1));
DataList.Add(new Student("Tom Catello", 7777, "Software Development", 4));
}
public static void DisplayStudentData()
{
Console.WriteLine("This is a full list :\n");
Console.WriteLine();
Console.Write("Name\t\tId\t\tCourse\t\t\tYear\n");
Console.WriteLine("------------------------------------------------------------------");
foreach (var value in DataList)
{
value.DisplayDetails();
Console.WriteLine("------------------------------------------------------------------");
Console.WriteLine();
}
}
public static void DisplayDataByIdReversed()
{
}
}
}
Hi,can you please explain how to use IComparable with the list.I have a List with string name,string module, int id,int year.
How do i use the Icomparable ComapreTo to sort in reverse order?
Regards
