This document provides an overview of the Visual Studio development environment and basic concepts for building a graphical user interface (GUI) using Visual Basic. It describes Visual Studio components like the Solution Explorer, Toolbox and Properties windows. It explains how to create forms, labels, textboxes and buttons in a Windows Forms application. It also covers basic coding concepts like assigning names, setting properties and handling button click events. The document provides examples of using common functions like MsgBox, formatting text, and converting between data types.

1. 2

2. • Visual Studio
•
•
• Label
• TextBox ( )
• Button

3. Visual
Studio 2008
• Start > All Programs > Microsoft Visual Basic

5. • Create Project
File > New Project
• Windows Forms Application

8. • Menubar
• Standard Toolbar

9. • Solution Explorer

10. • Properties

11. • Toolbox

12. Form
Textbox,But
ton,

13. • Name
• Bgcolor
• BackgroundImage
• Text
• WindowState
***
Properties

14. Form
1. Project> Add Windows
Form
2. Windows Form

15. 1. Project>
Properties
2.

16. Start Debugging Run
•
•
Stop Debugging
Stop

19. Label
• Name
• Font
• Forecolor
• Text
• Visible
*** label
Properties

20. .text

21. Textbox
• Name
• BorderStyle
• Enabled
• Font
• Forecolor
• Maxlength
• Multiline
• Scorllbars
• Text
• Visible
*** TextBox
Properties

22. GUI

23. Button
• Name
• Backcolor
• BackgroundImage
• Font
• Forecolor
• Text
• Visible
*** Button
Properties

25. code

26. Code

27. Name =TextBox1
Name =TextBox2
Name =TextBox3
Name =Button1
Name =Button2

28. Public Class Form1 //
Dim a, b As Integer // a b
Dim sum As Integer // sum
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
a = TextBox1.Text // TextBox1
a
b = TextBox2.Text // TextBox1
b
sum=a+b // a+b sum
TextBox3.Text = sum // sum TextBox3.Text
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
TextBox1.Text = "“ // TextBox1.Text
TextBox2.Text = "“ // TextBox2.Text

29. .checked

30. Radiobutton
• Name
• Checked
• Enabled
• Text
*** RadioButton
Properties

31. RadioButton

32. Click
.Text

33. ComboBox
• Name
• Enabled
• Item
• Text
*** ComboBox
Properties

34. 4
Message Box

35. •
•
•
MsgBox

36. Textbox
Ucase UCase(“yao")
Textbox1.text=Uca
se(textbox1.text)
YAO
LCase LCase(“Yao")
Textbox1.text=Lca
se(textbox1.text)
yao
Trim Trim(" Hello ") Trim(" Hello ")
Textbox1.text=Tri
m(textbox1.text)
Hello
Len Len("AAA")
Textbox1.text=Len
(textbox1.text
3

37. textbox
CInt Integer
CInt("3000.457"
)
Cint(textbox1.text
)
3000
CLng Long
CLng("1000000
0")
CLng(textbox1.tex
t)
10000000
CCur Currency
CCur("4598.897
6")
CCur(textbox1.tex
t)
4598.8976
Csng Single
CSng("10000.71
17")
CSng(textbox1.tex
t)
10000.71
CDbl Double
CDbl("10000.71
17")
CDbltextbox1.text
)
10000.7117
CDate Date
CDate("7 Jan
98"), CDate(56)
CDate(textbox1.te
xt)
1/7/98,
2/24/1900
CStr String CStr(975.7773)
CStr(textbox1.text
"975.7773"

38. Dim num1,num2 as integer
Dim sum as integer
Private sub button1
num1=textbox1.text
num2=textbox2.text
sum=num1+num2
textbox3.text=sum
End sub
Private sub button1
textbox3.text=Cint(te
xtbox1.text)+Cint(tex
tbox2.text)
End sub

39. Date Time
Now textbox.1.text=Now
10/17/98
6:42:33 PM
Date
textbox.1.text=date
.today
Time
textbox.1.text=time
string 6:42:33 PM

40. MessageBox
• MessageBox
MsgBoxMsgBox (“ msgbox”,
button+ icon, “title”)
Message
Box

41. Msgboxstyle.Ok
Only
Msgboxstyle.Okc
ancel
Msgboxstyle.Yes
No
Msgboxstyle.Yes
Nocancel
Msgboxstyle.Ret

42. Msgbox

43. title
icon
Button

44. Msgboxstyle.Crit
ical
Msgboxstyle.Que
stion
Msgboxstyle.Excl
amation
Msgboxstyle.Inf
ormation

45. Isnumer
ic
textbox
true
false
If
Isnumeric(textbox1.
text) then
Msgbox(“
”)
Textbox1.text=form
at(cint(textbox1.tex
t),”#,#.00”)

46. Format
Textbox1.text=format
(date.today,“long
date”)
29
2556

47. 3%

48. 3%
Comment

50. •
•

51. • Date time
• Date time

52. • Format
• Format

53. •
3
•

54. •
3 2
•
7%

55. •
(Code) ,
(Name) ,
(QTY), Typepro)
•
2%,3%,5%

56. •
- 2
25
- 1
- 2

57. Code
•
• Textbox
(Code) ,
(Name) (QTY)
Typepro)
• (Price)
• 200
15
• 200 – 500
12

58. • (Vat)
7%
• (Discount)
15%
• (NetAmount)
• Clear
• Exit

59. • Google keyword
visual studio 2008
– http://wwwback.krirk.ac.th/thai4thai/BA2605_
web/VB_outline531.htm
– http://gla.reru.ac.th/VB.php?menu=5
– http://pui.rru.ac.th/3601102/
•
Visual
Basic.Net