Week 3b - Advanced C# Features

Web Resourses:

Lecture Specifics:

1. The Syllabus describes topics to be covered, reading material for you to digest before coming to class, and due dates for the assigned projects.

2. Projects:

   Project #1, Project #2
3. Q & A Threads:
   We will be using piazza.com to host Question and Answer threads.

   This will work to give quick answers to fairly short questions.
   It will not work to discuss complex questions about your coding problems or debugging.
   For that you will need to ask questions during the Synchronous lectures.

4. C# Examples:

   Delegates:

   • Delegate Structure Diagram
     
   • Delegates Demos
     Illustrates classic definition and use of delegates. Newer ways are syntactically cleaner -see below.
   • Various ways to declare and use delegates
     Newer syntax is less verbose - I use it a lot now.
   • Navigate Directory Trees
     Recursive walk of a directory tree. Isn't reusable as file and directory processing is part of the walk code.
   • Navigate with Delegates
     Here the directory tree walker is made reusable by using delegates to call into client code.
   • Using Delegates - MSDN link
     

   Lambdas:

   • Lambda capture
     Fairly simple example of lambda definition and use.
   • Lambda Demos
     Contains three demos:
     
     • LambdaDemo: illustrates delegate and lambda structures using reflection
     • MoreLambdas: Discloses behavior of lambda's variable capture
     • PredicateLambda: Shows one way to build query processing for Project #2

   Other Demos:

   • .Net Containers
   • Passing Method Parameters, Parameter Passing Diagram
   • Extension Methods
     
   • conversions Demo
     
   • Type Testing and Coercions Demo
     
   • Demo Command Line and File Handling

5. More C# Code Examples and Tutorials:

   • Getting Started with C#
   • C# code examples
   • C# Samples from Microsoft
   • MSDN C# Tutorials
   • tutorialspoint
   • C# Station
   • CSharp Computing
   • homeandlearn
   • Univ of Linz
   • Jaggersoft

6. LINQ and related topics:

   We will discuss these in the XML lecture. Look ahead if you wish.

   IQueryable<T> members - MSDN link
   IEnumerable<T> members - MSDN link
   

   Extension Methods - used by LINQ

   LINQ Presentation, pptx
   LINQ Query Examples from presentation

   Scott Guthrie's LINQ blogs
   LINQ Queries on Collections
   LINQ to XML
   Create XML with XDocument
   LINQ to SQL
   LINQ Bindings

7. Lecture Take-away:

   Most important topics are:

   • Delegates
   • Lambdas