 Krzysztof Cwalina Program Manager Microsoft Corporation http://blogs.msdn.com/kcwalina  Brad Abrams Product Unit Manager Microsoft Corporation http://blogs.msdn.com/brada

 Brad Abrams

Product Unit Manager

Microsoft Corporation http://blogs.msdn.com/brada

Dow Jones Industrial Average @ 9,000

Dow Jones Industrial Average @ 9,000

Framework Design Artifacts: Properties Methods Events Constructors

Framework Design Artifacts:

Properties

Methods

Events

Constructors

public class XmlFile { string filename; Stream data; public XmlFile(string filename) { this.data = DownloadData(filename); } } public XmlFile(string filename) { this.filename = filename; } lazy

public class ArrayList { public int Count {get;} }

EmployeeList l = FillList(); for (int i = 0; i < l.Length; i++){ if (l.All[i] == x){...} } if (l.GetAll()[i]== x) {...} public Employee[] All {get{}} public Employee[] GetAll() {} Moral: Use method if the operation is expensive Calling Code

Time to cut…

public class TheBase : Object { public override string ToString() { return “Hello from the Base&quot;; } } public class Derived : TheBase { public override string ToString() { return “Hello from Derived&quot;; } }

Derived d = new Derived(); Console.WriteLine (d.ToString()); TheBase tb = d; Console.WriteLine (tb.ToString()); Object o = tb; Console.WriteLine (o.ToString());

All Virtual members should define a contract Don’t require clients to have knowledge of your overriding Should you call the base?

All Virtual members should define a contract

Don’t require clients to have knowledge of your overriding

Should you call the base?

Barbara Liskov

public interface IComparable { int CompareTo(object obj); }

Careful dependency management is the necessary ingredient to successful evolution of frameworks. Without it, frameworks quickly deteriorate and are forced out of relevance prematurely.

   BCL WPF XML Reflection

Climbing a mountain?

Scaling a peak?

Running across a desert?

Falling into a pit?

Read the manual??

Read the manual??

The Power of Sameness

P ascal C asing – Each word starts with an uppercase letter c amel C asing – First word lower case, others uppercase SCREAMING_CAPS – All upper case with underscores

P ascal C asing – Each word starts with an uppercase letter

c amel C asing – First word lower case, others uppercase

SCREAMING_CAPS – All upper case with underscores

public class MemberDoc { public int CompareTo(object value) public s tring Name { get;} }

public class CMyClass { int CompareTo (object objValue) {..} string lpstrName {get;} int iValue {get;} }

Brad Abrams http://blogs.msdn.com/brada Krzysztof Cwalina http://blogs.msdn.com/kcwalina Please fill out the session evals!

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