Dictionary<string, int> dict = new Dictionary<string, int>();
Dictionary<string, int> dict1 = new Dictionary<string, int>(5); // Creates a dictionary with default initial capacity of 5
var students2 = new Dictionary<int, StudentName>()
{
[111] = new StudentName { FirstName="Sachin", LastName="Karnik", ID=211 },
[112] = new StudentName { FirstName="Dina", LastName="Salimzianova", ID=317 } ,
[113] = new StudentName { FirstName="Andy", LastName="Ruth", ID=198 }
};