static public List <City> CitiesList = new List <City>(); // you have to repeat the type of list in the right side of declaration
//OOP
// since the method/variable is by default private, you have to declare it to public in class
// there is a internal excutable modifier, like: public/private/internel/...
// if no initialized variable name, they equal to 0 or null
// one sulotion one project
// one project is one assembly
//if you say : c1.name = "montreal"; it's error due to it's private by default, you cannot read the variable name from c1 instance
// mscorelib provide the library and reference for diff. purposes, you can check from "object brower"
static void Main(string[] args)
{
try
{
City c1 = new City();
c1.Name = "Montreal";
c1.PopulationMillions = 2.5;
Console.WriteLine(c1);
// this is not a constructor
City c2 = new City
{
Name = "Toronto",
PopulationMillions = 4.5
};
BetterCity bc1 = new BetterCity();
bc1.Name = "Vancouver";
bc1.Name2 = "Test"; // this line actually calls the getter/setter, different with Name
CitiesList.Add(new City {
Name = "New York"
});
CitiesList.Add(new City {
Name = "LA"
});
CitiesList.Add(new City {
Name = "London"
});
// read and write of the variable of object without getter/setter
CitiesList[1].PopulationMillions = 10;
double pop2 = CitiesList[2].PopulationMillions;
// slightly diff. with java by : and +
foreach (City c in CitiesList)
{
Console.WriteLine("City is " + c);
}
}
catch (InvalidOperationException ex)
{
Console.WriteLine("Error: " + ex.Message);
}
finally
{
Console.WriteLine("Press any key to finish");
Console.ReadKey();
}
}
static void Main(string[] args)
{
try
{
City c1 = new City();
c1.Name = "Montreal";
c1.PopulationMillions = 2.5;
Console.WriteLine(c1);
//object initializer, it is not a constructor
City c2 = new City {
Name = "Toronto", PopulationMillions = 4.5
};
BetterCity bc1 = new BetterCity();
bc1.Name = "Vancouver";
bc1.Name2 = "VC"; //ex
CitiesList.Add(new City {
Name = "New York"
});
CitiesList.Add(new City {
Name = "LA"
});
CitiesList.Add(new City {
Name = "Recife"
});
foreach (City c in CitiesList)
{
Console.WriteLine(c);
}
}
catch (InvalidOperationException ex)
{
Console.WriteLine("Error: " + ex.Message);
}
finally
{
Console.WriteLine("Press any key");
Console.ReadKey();
}
}
