1. Lecture 1 Making a C# GUI Program
CS1S467 GUI Programming
Lecture 1
Making a C# GUI Program

2. I am Dr Peter Plassmann peter.plassmann@southwales.ac.uk
J226 (office) / J150 (lab)
01443 /

3. My Co-Lecturer Dr Mark Ware
J302 (office) /

4. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

5. https://ruhere.southwales.ac.uk/

6. RFID Card Readers

7. RU Here Card

8. Electronic Register

9. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

10. Lecture Slides
Lecture Slides are unsuitable for learning how to program!
You just get an illusion of learning!
Programming is a craft. You have to do it to learn it.

11. Can you ride a bike by knowing this?
Lecture Slides
Can you ride a bike by knowing this?

12. Occasionally in Lectures
Lecture Slides
This Lecture
Occasionally in Lectures
Labs, & Home

13. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

14. Timetable You Lectures Labs
1 hour lecture
Mondays, 11:00 to 12:00, H230
Labs
2 hours lab
Thursdays, 15:00 to 17:00, J113
You
should all be Information Communications Technology (BSc / MComp) students

15. Assessment No Exam 2 Courseworks We know, you must be gutted...
In labs, programming tasks
CW 1: 40%
CW 2: 60%
To pass: CW1 * CW2 *0.6 > 40%

16. Module Content
BlackBoard tour now (content, assignments, books, resources, labs, ...)

17. We Are Using C#
C ‘dialect’ by MS (derived from J++ but a $20 million legal dispute later…)
C is most popular programming language (Java, C# 2nd)
Identical principle, different implementation:
C# under .NET
Java under JVM (Java Virtual Machine)

18. We Are Using
Visual Studio 2017

19. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

20. Making a Python Program
Hello.py
Human readable text file
Interpretation of text file by Python Interpreter
- line by line: translate to machine code, then run
- this is VERY slow
Python Interpreter for Windows PC
Python Interpreter for Ubuntu PC
Python Interpreter for Android Phone
Output always the same
“Hello World”
“Hello World”
“Hello World”

21. Making a C Program Hello.c Hello.exe “Hello World”
Human readable text file
Compilation of text file by the C compiler (e.g. gcc)
Executable file, runs directly on the target system (but not other systems)
Hello.exe
Running of .EXE executable by target OS only
Windows PC
Ubuntu PC
Android Phone
“Hello World”

22. Making a Java Program Hello.java Hello.class “Hello World”
Human readable text file
Compilation of text file by ‘javac’ compiler
‘Byte Code’ file, interpreted by different dedicated Java Virtual Machines (JVMs)
Hello.class
JVM for Windows PC
JVM for Ubuntu PC
JVM for Android Phone
Interpretation of Byte Code by JVMs
Output always the same
“Hello World”
“Hello World”
“Hello World”

23. monoDroid for Android Phone
Making a C# Program
Hello.cs
Human readable text file
Compilation of text file by C# compiler into CIL (Common Intermediate Language) .exe
CIL executable, JIT (Just In Time) compiled by the .NET or mono CLR (the Common Language Runtime)
Hello.exe
Running of exe Code under the .NET/mono CLR
.NET for Windows PC
mono for Ubuntu PC
monoDroid for Android Phone
Output always the same
“Hello World”
“Hello World”
“Hello World”

24. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

25. CIL+CLR+BCL+"stuff" = .NET
We are using these parts only
The .NET Framework Stack
from:

26. Why the Complexity?
Safety of code execution (e.g. array buffer overflows)
Garbage collection (avoid memory leaks)
Operating Systems agnostic (develop once, run anywhere. Java OK, Microsoft - kicking & screaming - .NET going Open Source)
Many languages - 1 platform
now some details……

27. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

28. Structure of a C# Program
Every C# (and Java, C, VB, ...) Program starts with ‘Main()’
‘Main()’ is located in the ‘Program.cs’ file:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ExampleProgram {
static class Program
// The main entry point for the application.
static void Main()
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1()); }

29. Structure of a C# Program
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ExampleProgram {
public partial class Form1 : Form
public Form1()
InitializeComponent(); }
The ‘Form1.cs’ file
Application.Run(new Form1());

30. Structure of a C# Program
The ‘bits and pieces:
‘using’: libraries with functionality, most default ones not needed
‘namespace’: combines multiple .cs files to a single program, normally one file contains one class
‘public partial class’: several classes make a program, required for OO programming.
‘{‘ and ‘}’ brackets: a pair defines a block. Note the alignment
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ExampleProgram {
public partial class Form1 : Form
public Form1()
InitializeComponent(); }

31. Today RU Here Lecture slides are NOT good for learning Module content
Difference Interpretation – Compilation
.NET overview
Structure of a C# program
Lab preview

32. Preview of Lab Session Where are the files? Where is my exectutable?
Debug vs. Release
How to copy a C# Project between computers
The ‘Properties’ pane
The ‘Toolbox’ pane
How to run, how to stop a program

33. End of Lecture 1