Example

Dictionary Example

public class Student{
  public Dictionary<string, object> CustomProperties =
	    new Dictionary<string, object>();
}
public class Program
{
  
  	public void FindName(List<Student> student, string name)
        {
            List<Student> names = student;
            string studentname = name;
            foreach (Student currentSt in names)
            {
                foreach (var prop in currentSt.CustomProperties)
                {
                    if (prop.Key == "Name" && Convert.ToString(prop.Value) == studentname)
                    {
                        Console.WriteLine("I found " + prop.Value);
                    }
                }

            }
        }

        public void FindFailed(List<Student> student)
        {
            List<Student> names = student;
            foreach (Student currentSt in names)
            {
                foreach (var prop in currentSt.CustomProperties)
                {
                    if ((prop.Key == "Java" && Convert.ToInt32(prop.Value) < 50) || (prop.Key == "Statistics" && Convert.ToInt32(prop.Value) < 50))
                    {
                        Console.WriteLine("The failed grades includes: ");
                        Console.WriteLine(prop);

                    }
                }

            }
            Console.ReadLine();
        }

        public void findAgeAverage(List<Student> student)
        {
            int sum = 0;
            List<Student> names = student;
            foreach (Student currentSt in names)
            {
                foreach (var prop in currentSt.CustomProperties)
                {
                    if (prop.Key == "Age")
                    {
                    
                            sum += Convert.ToInt32(prop.Value);

                    }
                }

            }
            decimal average = (decimal)sum / names.Count;
            Console.WriteLine("The average age: "+ average);
            Console.WriteLine("end");
            Console.ReadLine();
        }

        
        static void Main(string[] args)
        {
            List<Student> lstStudents = new List<Student>();

            Student objStudent = new Student();
            objStudent.CustomProperties.Add("Name", "Tom");
            objStudent.CustomProperties.Add("Age", 30);
            objStudent.CustomProperties.Add("Java", 40);
            objStudent.CustomProperties.Add("Statistics", 80);


            lstStudents.Add(objStudent);

            objStudent = new Student();
            objStudent.CustomProperties.Add("Name", "Sreejata");
            objStudent.CustomProperties.Add("Age", 26);
            objStudent.CustomProperties.Add("Java", 87);
            objStudent.CustomProperties.Add("Statistics", 73);

            lstStudents.Add(objStudent);

            objStudent = new Student();
            objStudent.CustomProperties.Add("Name", "Rajat");
            objStudent.CustomProperties.Add("Age", 25);
            objStudent.CustomProperties.Add("Java", 80);
            objStudent.CustomProperties.Add("Statistics", 33);
            lstStudents.Add(objStudent);
            objStudent = new Student();

            objStudent.CustomProperties.Add("Name", "Anita");
            objStudent.CustomProperties.Add("Age", 20);
            objStudent.CustomProperties.Add("Java", 77);
            objStudent.CustomProperties.Add("Statistics", 82);
            lstStudents.Add(objStudent);

            objStudent = new Student();
            objStudent.CustomProperties.Add("Name", "Steve");
            objStudent.CustomProperties.Add("Age", 19);
            objStudent.CustomProperties.Add("Java", 60);
            objStudent.CustomProperties.Add("Statistics", 90);
            lstStudents.Add(objStudent);


            Program pr = new Program();
            Console.WriteLine("Please input the name you want to search for:");
            string name = Console.ReadLine();
            pr.FindName(lstStudents, name);
            pr.FindFailed(lstStudents);
            pr.findAgeAverage(lstStudents);
        }
}