Introduction to C#

A basic introduction to the C# programming language, presented at a StudentGuru Patras event in November 2012

Transcript

1. Konstantinos Goutsos
   Undergraduate student – ECE Department
   StudentGuru Patras Member
   

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2. Object-Oriented
   Programming
   

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3. objects
   properties
   Object-Oriented Programming
   methods
   classes inheritance
   interfaces
   the basics
   

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4.  Better approach to the real world
    Modularity
    Data Encapsulation
    Code re-use
    Pluggability and debugging
   Why use Object-Oriented Programming?
   

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5. color
   manufacture
   date
   Car
   speed
   brake() changeGear()
   accelerate()
   our sample class
   gear
   

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6. Car
   class implementation in C#
   

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7. Visual C# 2012
   

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8. automatic
   memory
   handling lots of libraries
   Why use Visual C#
   most code
   written for you
   desktop
   applications
   internet
   applications
   cross-platform
   object-oriented
   programming
   web+cloud
   services
   embedded
   systems
   

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9. Variables
   types & declaration
   • Supported types: integers, doubles, strings, dates
   and many more
   • Declaration: [type] name = [value];
   • Example: string name="Konstantinos";
   • Important: Assign with one = compare with two ==
   • Don‘t forget to initialize your variables!
   

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10. • Declaration:
    [type][] name= {value, value, ….};
    • For example:
    int[] numbers={0,1,2,3};
    • Element reference: array[index]=5;
    • Memory is automatically allocated and cleaned
    Variables
    arrays
    

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11. • Same logic as in mathematics:
    = 22 + 3 + 5
    • Function declaration:
    [type] function_name ([type] arg1, [type] arg2,…)
    {
    statements;
    }
    Functions and methods
    the basics
    

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12. Control statements
    if clauses
    • if (condition)
    statement1;
    else
    statement2;
    • if (condition1)
    statement1;
    else if (condition2)
    statement2;
    else
    statement3;
    Example
    int age;
    boolean legalAge;
    if (age>=18)
    legalAge=true;
    else
    legalAge=false;
    

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13. switch (expression)
    {
    case 1:
    Console.WriteLine("Case 1");
    break;
    case 2:
    Console.WriteLine("Case 2");
    break;
    default:
    Console.WriteLine("Default case");
    break;
    }
    Control statements
    switch statement
    

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14. for (int i = 1; i <= 5; i++)
    {
    Console.WriteLine(i);
    }
    int[] array={3,7,1,9};
    foreach(int num in array){
    Console.WriteLine(num);
    }
    Loop statements
    for and foreach
    

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15. while (condition)
    {
    Console.WriteLine("StudentGuru rocks!!");
    }
    int i=2012;
    do{
    Console.WriteLine(i);
    } while (condition)
    Loop statements
    while and do
    

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16. • .NET Framework 4.5 support
    • Simpler asynchronous/threaded programming
    with the async and await keywords
    • Quicker debugging with Caller Information
    • Windows Store application support
    What’s new in Visual C# 2012
    

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17. Visual Studio 2012
    

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18. • Support for Visual C#, Visual Basic, Visual F#,
    C, C++, ASP.NET, XNA
    • Complete development environment for major
    platforms including Windows desktop,
    Windows Store, Windows Phone, ΧΒox
    • Provides all the tools you might need to create
    pro-level applications
    Visual Studio
    

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19. • Download the at: msdn.upatras.gr
    • Login with your department credentials: eceXXXX
    or ceidXXXX
    Get Visual Studio 2012
    for free
    

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20. • New look and feel including a dark theme (yay!)
    • Better faster IntelliSense
    • Support for .NET Framework 4.5 and Visual C#
    2012
    • Ability to develop for Windows Store and Windows
    Phone 8
    • Blend for Visual Studio included
    Key new features
    

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21. Web Browser Demo
    

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22. • Microsoft Developer Network:
    msdn.microsoft.com
    • Visual C# in Visual Studio resources:
    http://bit.ly/OJFzDr
    • Active community at StackOverflow
    • StudentGuru: www.studentguru.gr
    • Contact us!!
    Visual C# Resources
    

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