CPSC Tutorial 4

Transcription

1 CPSC Tutorial 4 Visual Studio and C# (based on previous tutorials by Alice Thudt, Fateme Rajabiyazdi, David Ledo, Brennan Jones, Sowmya Somanath, and Kevin Ta)

2 Introduction

3 Contact Info Please always include [CPSC 481] in the subject header Expect replies in: 24 hours on weekdays 48 hours on weekends

4 2nd Half of the Semester Visual Studio C# WPF (Windows Presentation Foundation) Horizontal Prototype Heuristic Evaluation Blend Animation

5 Assignment #2 March 6th (Monday) in class Horizontal Prototype Redesign + Presentation Slides Freeze March 7th ~ 9th during tutorial Horizontal Prototype Presentation (20%) April 7th (Friday) in class Final Project Submission April 10th ~ 14th in lab Project Demonstration (80%)

6 Today Intro to Visual Studio Version Control Starting a project Workspace Intro to C# Hello World

7 Visual Studio

8 Visual Studio Microsoft Modern OOPL Visual Studio is installed on the lab machines You may download Visual Studio onto your machine for free Use your IT / webmail account and password to access MSDN Download from here Install it after downloading

9 Version Control For those who want an SVN account, go to the CPSC help desk (just outside our tutorial room) and ask for one AnkhSVN, VisualSVN, TortoiseSVN OR CPSC Help Desk: Request for an SVN account Include members IT account usernames or all usernames you wish to have access to it State it is for your CPSC 481 group project GitHub / BitBucket

10 Starting a Project

11 change name Starting a Project

12 run Workspace Explorer coding area

13 C#

14 C# Naming Conventions Every language has its own naming conventions C# uses camelcasing for variables and PascalCasing for methods int myinteger; public void ReturnResults(){ } Instance variables (or fields) starting with an underscore int _myinteger Interfaces always start with an I (e.g., ICloneable)

15 C# Comments // This is a single-line comment /* This is a multi-line comment */ /// This is how you describe methods

16 C# Access Modifiers public accessible anywhere private only accessible within the class or struct protected only accessible within the same hierarchy internal only accessible by the same assembly

17 C# Properties class TimePeriod { private double seconds; } public double hours { get { return seconds / 3600; } set { seconds = value * 3600; } } A get property accessor is used to return the property value A set accessor is used to assign a new value The value keyword is used to define the value being assigned by the set accessor Properties that do not implement a set accessor are read only

18 C# Properties (cont.) class Program { static void Main() { TimePeriod t = new TimePeriod(); // Assigning the Hours property calls the 'set' accessor t.hours = 24; // Evaluating the Hours property calls the get' accessor System.Console.WriteLine( Time in hours: " + t.hours); } } // Output: Time in hours: 24

19 C# Collections and Foreach using System.Collections; ArrayList list = new ArrayList(); list.add(1); list.add(2); foreach (int item in list) { // do something here } If you use generic containers (e.g., ArrayList), casting is implicit, unlike Java where you have to explicitly cast

20 C# Inheritance A class can inherit a base class and also implement one or more interfaces public class ChildClass : InterfaceName public class ChildClass : ParentClass public class ChildClass : ParentClass, IInterface1, IInterface2

21 Hello World

22 Hello World (cont.) debug functions: run, pause, stop, reset click to create a breakpoint call stack & variables

23 Prototype Iteration Based on your walkthrough and the problems you have identified, create updated designs for your prototype that incorporate your solutions This exercise does not have to be integrated into your portfolio It will help you for your later implementation Try to address all identified problems

24 Next Week More details about Assignment #2 (part 2 of your project) Intro to interface building using WPF (Windows Presentation Foundation)

25 Thank You