shassaan

//Adding elements
var arlist = new ArrayList();

 arlist.Add(1);
 arlist.Add("Bill");
 arlist.Add(" ");
 arlist.Add(true);
 arlist.Add(4.5);
 arlist.Add(null);

shassaan

//Access individual item using indexer
int firstElement = (int) arlist[0];
string secondElement = (string) arlist[1]; 

//using var keyword without explicit casting
var firstElement = arlist[0]; 
var secondElement = arlist[1];


//update elements

shassaan

List<int> primeNumbers = new List<int>(); 
primeNumbers.Add(1);
primeNumbers.Add(3); 
primeNumbers.Add(5); 
primeNumbers.Add(7);
 
var cities = new List<string>(); 
cities.Add("NewYork"); 
cities.Add("London"); 
cities.Add("Mumbai"); 

shassaan

//Access individual item using indexer
List<int> numbers = new List<int>() 
{ 1, 2, 5, 7, 8, 10 }; 

Console.WriteLine(numbers[0]); // prints 1 
Console.WriteLine(numbers[1]); // prints 2 
Console.WriteLine(numbers[2]); // prints 5 
Console.WriteLine(numbers[3]); //  prints  7

shassaan

BlockingCollection<int> data = new BlockingCollection<int>(); 
Task t1 = Task.Run(() =>{
   data .Add(1);
   data .Add(2);
   data .Add(3);
   data .CompleteAdding();
 });

shassaan

Task t2 = Task.Run(() =>
            {
                try
                {

                    while (true)
                        Console.WriteLine(bc.Take());

                }
                catch (InvalidOperationException)

shassaan

IList<string> stringList = new List<string>()
 { 
"C# Tutorials",
 "TS Tutorials",
 "Learn python",
 "nodejs Tutorials" ,
 "adonisjs" 
 }; // LINQ Query Syntax 
var result = stringList.Where(s => s.Contains("Tutorials"));

shassaan

public class Grade{
    public int GradeId { get; set; }
    public string GradeName { get; set; }
    public ICollection<Student> Students { get; set; }
}

shassaan

public class Student{
    public int ID { get; set; }
    public string Name { get;set;} 
    public Grade Grade { get; set; }
}

shassaan

public class SchoolContext: DbContext{

  public SchoolContext():base(){}  

    public DbSet<Student> Students;
    public DbSet<Grade> Grades;
}