1. The University of Texas – Pan American
CSCI 3328 Object Oriented Programming in C# Chapter 2: Introduction to Visual C# Programming
Xiang Lian
The University of Texas – Pan American
Edinburg, TX 78539
This set of slides is revised from lecture slides of Prof. John Abraham. -- Xiang Lian

2. Objectives In this chapter, you will
Become familiar with the IDE, Visual Studio
Learn more controls of Visual C# programming
Discover differences between different controls
See more examples of designing the graphical interface
Become aware of the console application, in addition to windows forms application

3. Demo in the Class
form
Text
BackColor
label
button

4. Integrated Development Environment (IDE)

5. Integrated Development Environment (cont'd)
Menu bar
File: Open/New/Save/Close projects or files
Edit: Undo/Redo, Copy, Paste, Cut
View: Other Windows  Properties
Build
Debug: Start Debugging, Step Into, Step Over

6. Integrated Development Environment (cont'd)
Buttons
For files and edit
For compilation
For debugging
If some buttons do not appear, right click your mouse on the tool bar and customize buttons

7. Integrated Development Environment (cont'd)
Windows
show all files
events
Properties
Solution Explorer

8. Visual C# Controls Choose Windows forms application
What you see is the IDE (Integrated Development Environment)
Use Sizing handle to make the form
Adjust the size of the properties window
In the toolbox
Use common controls
Start placing objects on the form
Place a button, label it OK and add code this.Close()

9. Controls

10. TextBox Difference between label and text boxes Properties window
Changing name and text
Border Style
BackColor
Font Size
Visible
TabIndex

11. PictureBox Properties Image  Local resource  Import
SizeMode: Normal, Stretch Image, AutoSize, CenterImage, Zoom

12. GroupBox Properties RadioButton CheckBox Text Checked = "false"
Add radio buttons to the group box
At most one radio button is checked at a time
CheckBox
0 or any number of boxes are checked

13. Other Interesting Controls
ProgressBar
Value: 50
ListBox
Items: enter strings one per line
ComboBox

14. Adding a Pop-Up Message Box
Add a form to the application
Add this line
MessageBox.Show("Hello!");
MessageBox.Show("Hello!", "Show Message");

15. Example of GUI Design
Notepad GUI
Menu strip
Rich TextBox

16. Example of GUI Design (cont'd)
Calendar GUI
Label
MonthCalendar
RichTextBox

17. Analyzing a Program Line numbers: not part of Visual C#
Comments: (Lines 23-29)
Classes: class declaration (Lines 12-31)
Keywords: Case sensitive (the same as C++)
public, private, class
partial
event handling

18. Variable Declaration and Naming
Same as C++
Data types: int, float, double, char, etc.
Variable name: (1) digits, letters, underscore ("_"), and (2) cannot start with a digit
int x = 1;
int x = 0, y = 1;
Naming convention
Camel case: e.g. firstNumber

19. Assignment Use DOT (.) to refer to attributes of an object
E.g., Label1.Text
Use assignment operator (=) to give a value to a variable
E.g., Label1.Text = "haha"

20. Applications In addition to Windows Forms Application, … Console
Output appears in console window
From Visual Studio choose C# and choose a new project, and choose Console Application
Give it a name

21. Demo of Hello Program string name; name=Console.ReadLine();
Console.WriteLine("Hello! " + name);
Console.WriteLine("Welcome to Dr. Lian's C# Class!");
Console.ReadLine();

22. Demo of Hello Program (cont'd)

23. Summary IDE Controls GUI design Program analysis
Menu bar, buttons, windows, toolboxes
Controls
TextBox, PictureBox, GroupBox, etc.
GUI design
Examples
Program analysis
Windows Forms Application vs. Console Application