Create Custom Genric List class

This article is about creating a custom List class. Suppose you want a List type called Employees which will hold employee class object in it. We can do it by defining a class of type generic List which is of type Employee.

Employee.cs

    public class Employee

    {

        int empId;

        string empName;

        string empDesig;

        public Employee()

        {

        }

        public Employee(int empId, string empName, string empDesig)

        {

            this.empId = empId;

            this.empName = empName;

            this.empDesig = empDesig;

        }

        public int EmpId

        {

            get { return empId; }

            set { empId = value; }

        }

        public string EmpName

        {

            get { return empName; }

            set { empName = value; }

        }

        public string EmpDesig

        {

            get { return empDesig; }

            set { empDesig = value; }

        }

    }

Now you can define your own Employee list type by inheriting Generic List<T> type which has type employee as parameter. Below is the code for the same.

Employees.cs

    public class Employees: List<Employee>

    {

        public MyList()

        {

        }

        public new void Add(Employee item)

        {

            base.Add(item);

        }

        public new IEnumerator<Employee> GetEnumerator()

        {

            return base.GetEnumerator();

        }

        public new Employee this[int index]

        {

            get { return this[index]; }

            set { this[index] = value; }

        }

    }

In the abouve example code function like Add, indexer are the basic implementation. You can have your own implementation.