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The overload of the Sort() method in the List class requires the Comparison delegate Passed as parameter.
public void Sort(Comparison
CompareTo Returns an integer indicating whether the value of this instance is less than, equal to, or greater than the specified object or otherInt16 The value of the instance.
The Int16.CompareTo() method in C# is used to compare this instance with the specified instance Object or another Int16 instance
class Program{ public static void Main(){ Employee Employee1 = new Employee(){ ID = 101, Name = "Mark", Salary = 4000 }; Employee Employee2 = new Employee(){ ID = 103, Name = "John", Salary = 7000 }; Employee Employee3 = new Employee(){ ID = 102, Name = "Ken", Salary = 5500 }; List<Employee> listEmployees = new List<Employee>(); listEmployees.Add(Employee1); listEmployees.Add(Employee2); listEmployees.Add(Employee3); Console.WriteLine("Employees before sorting"); foreach (Employee Employee in listEmployees){ Console.WriteLine(Employee.ID); } listEmployees.Sort((x, y) => x.ID.CompareTo(y.ID)); Console.WriteLine("Employees after sorting by ID"); foreach (Employee Employee in listEmployees){ Console.WriteLine(Employee.ID); } listEmployees.Reverse(); Console.WriteLine("Employees in descending order of ID"); foreach (Employee Employee in listEmployees){ Console.WriteLine(Employee.ID); } } // Approach 1 - Step 1 // Method that contains the logic to compare Employees private static int CompareEmployees(Employee c1, Employee c2){ return c1.ID.CompareTo(c2.ID); } } public class Employee{ public int ID { get; set; } public string Name { get; set; } public int Salary { get; set; } }
Employees before sorting 101 103 102 Employees after sorting by ID 101 102 103 Employees in descending order of ID 103 102 101
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