2. Understanding Reflection Tamir Khason Technology Consultor ¹ mPrest Systems http://blogs.microsoft.co.il/blogs/tamir Session Code: DVP307 ¹ con·sul·tor (kən sult ′ ər) - one of a group of priests appointed to advise and assist a bishop

3. CLR – compilation and execution Execution Compilation Source code Language compiler JIT compiler Before installation or the first time each method is called MSIL Metadata Code Native code

14. We can clone it… Type kidType = oldKid.GetType(); Kid newKid = new Kid(); foreach (var m in kidType.GetProperties()) { m.SetValue(newKid , m.GetValue(oldKid, null), null); } Unknown object GetType().GetMembers() For Each Member FieldInfo.Copy old value to new Object

15. Clone optimization Kid CloneKid(Kid) { newKid.Height = oldKid.Height newKid.Weight = oldKid.Weight } Unknown object GetType().GetMembers() For Each Member Create Code that copies members Save as Method for later Invocation

16. Clone optimized Unknown object Has custom method? Execute Yes Copy Members No

30. Code Emitting public class MyClass { public static void Main() { string str = “Hello World!”; Console.WriteLine (str); } } AssemblyBuilder ModuleBuilder TypeBuilder MethodBuilder LocalBuilder ILGenerator OPCodes

36. From delegate to Lambda Delegate void SomeDelegate(EventsArgs e); Object.SomeEvent += new SomeDelegate(SomeMethod); Delegate Object.SomeEvent += delegate(EventArgs e) { //work here } Anonymous delegate Object.SomeEvent += (e) => { //work here }; Lambda

41. Please complete an evaluation

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