/// <summary>
/// Feature 9: Await in catch/finally
/// </summary>
private static async void Faeture9()
{
System.Console.WriteLine("Feature 9: Await in catch/finally");
try
{
// var pMan = new Person(null);
var pMan = new Person(" ");
}
catch (Exception ex) when (logException(ex))
{
}
catch (ArgumentNullException ex)
{
await LogErrorToFileAsync("Names cannot be null", ex);
}
catch (ArgumentException ex2) when (!Debugger.IsAttached)
{
await LogErrorToFileAsync("Names cannot be blank", ex2);
}
finally
{
System.Console.ReadKey();
System.Console.WriteLine("");
}
}
/// <summary>
/// Feature 8: Exception filters
/// </summary>
private static void Feature8()
{
System.Console.WriteLine("Feature 8: Exception filters");
try
{
// var pMan = new Person(null);
var pMan = new Person(" ");
}
catch (Exception ex) when (logException(ex))
{
}
catch (Exception) when (!Debugger.IsAttached)
{
System.Console.WriteLine("Debugger is not attached!");
}
finally
{
System.Console.ReadKey();
System.Console.WriteLine("");
}
}
public void Married(Person person) => FamilyName = person?.FamilyName;
// old style
public void MarriedOldStyle(Person person)
{
if( person != null)
{
FamilyName = person.FamilyName;
}
}
/// <summary>
/// Feature 1: Read only property
/// </summary>
private static void Feature1()
{
System.Console.WriteLine("Feature 1: Read only property");
var p = new Person(new DateTime(1969, 4, 4));
System.Console.WriteLine(p.Birthday);
System.Console.ReadKey();
System.Console.WriteLine("");
}
/*
// Don't work with Sqrt from System.Math
double Sqrt(double number)
{
return number;
}
*/
/// <summary>
/// Feature 2: Expression bodied function members
/// </summary>
private static void Feature2()
{
System.Console.WriteLine("Feature 2: Expression bodied function members");
var pMan = new Person(new DateTime(1969, 4, 4))
{
FirstName = "Michael",
FamilyName = "Hürtgen"
};
System.Console.WriteLine("Full name: " + pMan.FullName);
System.Console.WriteLine("Character at Index 2: " + pMan.FullName[2]);
System.Console.ReadKey();
var pWoman = new Person(new DateTime(1974, 5, 10))
{
FirstName = "Diana",
FamilyName = "Sacchi"
};
System.Console.WriteLine("Full name of bride: " + pWoman.FullName);
pWoman.Married(pMan);
System.Console.WriteLine("After marriage : " + pWoman.FullName);
System.Console.ReadKey();
System.Console.WriteLine("");
}
/// <summary>
/// Feature 4: String Interpolation
/// </summary>
private static void Feature4()
{
System.Console.WriteLine("Feature 4: String Interpolation");
var pMan = new Person(new DateTime(1969, 4, 4))
{
FirstName = "Michael",
FamilyName = "Hürtgen",
IsMale = true
};
// so far....
System.Console.WriteLine("Name : " + pMan.FullName + " Birthday: " + pMan.Birthday.ToShortDateString());
System.Console.WriteLine("");
// with string interpolation...
System.Console.WriteLine(
$"Name : {pMan.FullName} Birthday: {pMan.Birthday.ToShortDateString()} Male: {(pMan.IsMale ? "Yes" : "No")}");
System.Console.ReadKey();
System.Console.WriteLine("");
}
/// <summary>
/// Feature 5: name of
/// </summary>
private static void Feature5()
{
System.Console.WriteLine("Feature 5: name of");
var pMan = new Person(new DateTime(1969, 4, 4))
{
FirstName = "Michael",
FamilyName = " "
};
if(string.IsNullOrWhiteSpace(pMan.FamilyName))
{
System.Console.WriteLine($"Property {nameof(pMan.FamilyName)} is null or white space.");
}
System.Console.ReadKey();
System.Console.WriteLine("");
}
/// <summary>
/// Feature 6: null conditional operator
/// </summary>
private static void Feature6()
{
System.Console.WriteLine("Feature 6: null conditional operator");
var pMan = new Person(new DateTime(1969, 4, 4))
{
FirstName = "Michael",
FamilyName = "Hürtgen"
};
pMan.Married(null);
pMan.MarriedOldStyle(null);
System.Console.WriteLine($"Full name: {pMan?.FullName}");
System.Console.ReadKey();
System.Console.WriteLine("");
}