Microsoft 'NET Runtime

1
C Preview
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2
C Features

• Native support for core .NET framework
• Supports traditional OO concepts such as
• Inheritance
• Polymorphism
• Operator overloading
• C/C like syntax
• No more global variables

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3
A Simple C Program

• using System
• class Hello static void Main()
• Console.WriteLine("Hello, world")
  

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4
Arrays

• Can be single dimension or multi-dimension
• class Test
• static void Main()
• int a1 new int 1, 2, 3 int, a2
  new int, 1, 2, 3, 4, 5, 6 int,, a3
  new int10, 20, 30

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5
If Statement

• using System
• class Test
• static void Main(string args)
• if (args.Length 0) Console.WriteLine("No
  arguments were provided") else Console.WriteLi
  ne("Arguments were provided")

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6
Switch Statement

• using System
• class Test static void Main(string args)
  switch (args.Length) case
  0 Console.WriteLine("No arguments)
  break
• case 1 Console.WriteLine("One
  arguments) break
• default Console.WriteLine("0
  arguments) break

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7
While Statement

• using System
• class Test
• static int Find(int value, int arr)
• int i 0 while (arri ! value)
• if (i gt arr.Length) throw new
  ArgumentException() return i

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8
Do Statement

• using System
• class Test
• static void Main()
• string s
• do
• s Console.ReadLine() while
  (s ! "Exit")

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9
For Statement

• using System
• class Test
• static void Main()
• for (int i 0 i lt 10 i) Console.Write
  Line(i)

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10
Foreach Statement

• using System
• using System.Collections
• class Test
• static void WriteList(ArrayList list)
• foreach (object o in list)
  Console.WriteLine(o)

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11
OO Programming With C

• Classes
• Used to declare reference types
• Single inheritance from other classes
• Multiple inheritance from interfaces
• Class members can include the following
• Constants
• Fields, Methods, Properties, Indexers, Events
• Operators
• Constructors, destructors
• Nested Types

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12
OO Programming With C

• Access Modifiers
• Public
• Members are available to all code
• Protrected
• Members are accessible only from derived classes
• Internal
• Members are accessible only from within the same
  assembly
• Protected Internal
• Members are accessible only from derived classes
  within the same assembly
• Private
• Members are accessible only from the class itself

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13
OO Programming With C

• Interfaces
• Define a contract
• Class that implements an interface must adhere to
  its contract
• Interface members can consists of the following
• Methods
• Properties
• Indexers
• Events

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14
OO Programming With C

• Properties
• public class Button Control private string
  caption
• public string Caption get
• return caption
• set
• caption value Repaint()

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15
OO Programming With C

• Indexers
• public class ListBox Control
• private string items
• public string thisint index get
• return itemsindex
• set
• itemsindex value Repaint()

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16
OO Programming With C

• Exception Handling
• try //try-statement
• block of code
• catch ( class-type identifieropt )
  //specific-catch-clauses
• block of code
• catch //general-catch-clause
• block of code
• finally // finally-clause
• block of code

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