C# Online Compiler | .NET Fiddle

using System;
using System.Linq;
using System.Collections.Generic;

					
public class Program
{
	public static void Main()
	{
		// Student collection
		IList<Student> studentList = new List<Student>() { 
				new Student() { StudentID = 1, StudentName = "John", Age = 18 } ,
				new Student() { StudentID = 2, StudentName = "Steve",  Age = 15 } ,
				new Student() { StudentID = 3, StudentName = "Bill",  Age = 25 } ,
				new Student() { StudentID = 4, StudentName = "Ram" , Age = 20 } ,
				new Student() { StudentID = 5, StudentName = "Ron" , Age = 19 } 
			};
		
		var orderByResult = from s in studentList
                   orderby s.StudentName //Sorts the studentList collection in ascending order
                   select s;

		var orderByDescendingResult = from s in studentList //Sorts the studentList collection in descending order
                   orderby s.StudentName descending
                   select s;
		
		Console.WriteLine("Ascending Order:");
		
		foreach (var std in orderByResult)
        	Console.WriteLine(std.StudentName);
		
		Console.WriteLine("Descending Order:");
		
		foreach (var std in orderByDescendingResult)
        	Console.WriteLine(std.StudentName);
		
	}
		
}

public class Student{

	public int StudentID { get; set; }
	public string StudentName { get; set; }
	public int Age { get; set; }
	
}

 
using System;
using System.Linq;
using System.Collections.Generic;
​
                    
public class Program
{
    public static void Main()
    {
        // Student collection
        IList<Student> studentList = new List<Student>() { 
                new Student() { StudentID = 1, StudentName = "John", Age = 18 } ,
                new Student() { StudentID = 2, StudentName = "Steve",  Age = 15 } ,
                new Student() { StudentID = 3, StudentName = "Bill",  Age = 25 } ,
                new Student() { StudentID = 4, StudentName = "Ram" , Age = 20 } ,
                new Student() { StudentID = 5, StudentName = "Ron" , Age = 19 } 
            };
        
        var orderByResult = from s in studentList
                   orderby s.StudentName //Sorts the studentList collection in ascending order
                   select s;
​
        var orderByDescendingResult = from s in studentList //Sorts the studentList collection in descending order
                   orderby s.StudentName descending

Compilation error (line 2, col 14): Identifier expected
Compilation error (line 2, col 14): ; expected