static void ApplyStroke(XmlReader re, IStrokeable s)
{
re.MoveToContent();
for (int i = 0; i < re.AttributeCount; i++)
{
re.MoveToAttribute(i);
try
{
if (re.LocalName == COLOR_ATTR)
s.Stroke = DColor.FromString(re.Value);
else if (re.LocalName == STROKEWIDTH_ATTR)
{
double sw = 1;
double.TryParse(re.Value, out sw);
s.StrokeWidth = sw;
}
else if (re.LocalName == STROKESTYLE_ATTR)
s.StrokeStyle = (DStrokeStyle)Enum.Parse(typeof(DStrokeStyle), re.Value, true);
else if (re.LocalName == STROKECAP_ATTR)
s.StrokeCap = (DStrokeCap)Enum.Parse(typeof(DStrokeCap), re.Value, true);
else if (re.LocalName == STROKEJOIN_ATTR)
s.StrokeJoin = (DStrokeJoin)Enum.Parse(typeof(DStrokeJoin), re.Value, true);
}
catch { }
}
}
static void Main(string[] args)
{
//List is a generic data type!
//Automatic type inference: use "var" on the left side!
var fishtank = new List <Fish>
{
new Goldfish("Hans-Joachim"),
new Guppy("Herbert", "Jonas")
};
var garden = new List <Mammal>
{
new Cat("Frieda"),
new Bunny("Günther", "Peter")
};
//Make the pets swim resp. move using for-each loops:
foreach (var fish in fishtank)
{
fish.Swim();
}
foreach (var mammal in garden)
{
mammal.Move();
}
//Create a combined Pet list:
var zoo = new List <Pet>(fishtank);
zoo.AddRange(garden);
//Attend all pets:
foreach (var pet in zoo)
{
//Polymorphie (de) / Polymorphism (en):
//"pet" is a base class object, but the subclass methods will be called.
pet.Attend();
//Stroke those pets that implement IStrokeable:
IStrokeable strokeablePet = pet as IStrokeable;
if (strokeablePet != null)
{
strokeablePet.Stroke();
}
else
{
Console.WriteLine("{0} is not strokeable :( so sad", pet);
}
/* if (pet is IStrokeable)
* {
* IStrokeable strokeablePet = (IStrokeable)pet;
* strokeablePet.Stroke();
* }
* else
* {
* ...
* }
*/
}
}
