First steps in C# (from a Java perspective)

• const keyword (as opposed to 'final'?)
• C# is 'pass by value' unless otherwise specified:
• use the ref keyword with parameters AND arguments to 'pass by reference'
• use the out keyword with parameters AND arguments to 'pass by reference' without being able to access the old pre-method value
• Overloading the constructor:
• public Constructor (params) : this (params) {}
• Pay extra note: the constructor calls are BEFORE the block
• Implementing an interface:
• public class MyClass : IMyInterface {}
• pay note to the 'I' in front of MyInterface. Good convention.
• Inheriting a class:
• public class MyChildClass : MyParentclass {}
• the fact that there is no difference in syntax between inheriting a class and implementing an interface is an EXTRA (good) reason to obey the 'I in front' naming convention for interfaces.
• Overriding a Parentclass method:
• Parentclass method must have the keyword 'virtual'
• Childclass overriding method must have the keyword 'override'
• This make the default 'behavior' of ParentClasses that they CAN'T be overridden. Probably more secure :)
• Again: the keyword 'virtual' and 'override' form a pair which is needed to override methods.
• Calling the Parentclass method from within the Childclass: 
• base.parentMethod(args)