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บทที่ 3 การใช้งานคอนโทรล
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บทที่ 3 การใช้งานคอนโทรล

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Transcript

  • 1. 2
  • 2. • Visual Studio • • • Label • TextBox ( ) • Button
  • 3. Visual Studio 2008 • Start > All Programs > Microsoft Visual Basic
  • 4. • Create Project File > New Project • Windows Forms Application
  • 5. • Menubar • Standard Toolbar
  • 6. • Solution Explorer
  • 7. • Properties
  • 8. • Toolbox
  • 9. Form Textbox,But ton,
  • 10. • Name • Bgcolor • BackgroundImage • Text • WindowState *** Properties
  • 11. Form 1. Project> Add Windows Form 2. Windows Form
  • 12. 1. Project> Properties 2.
  • 13. Start Debugging Run • • Stop Debugging Stop
  • 14. Label • Name • Font • Forecolor • Text • Visible *** label Properties
  • 15. .text
  • 16. Textbox • Name • BorderStyle • Enabled • Font • Forecolor • Maxlength • Multiline • Scorllbars • Text • Visible *** TextBox Properties
  • 17. GUI
  • 18. Button • Name • Backcolor • BackgroundImage • Font • Forecolor • Text • Visible *** Button Properties
  • 19. code
  • 20. Code
  • 21. Name =TextBox1 Name =TextBox2 Name =TextBox3 Name =Button1 Name =Button2
  • 22. 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
  • 23. .checked
  • 24. Radiobutton • Name • Checked • Enabled • Text *** RadioButton Properties
  • 25. RadioButton
  • 26. Click .Text
  • 27. ComboBox • Name • Enabled • Item • Text *** ComboBox Properties
  • 28. 4 Message Box
  • 29. • • • MsgBox
  • 30. 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
  • 31. 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"
  • 32. 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
  • 33. 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
  • 34. MessageBox • MessageBox MsgBoxMsgBox (“ msgbox”, button+ icon, “title”) Message Box
  • 35. Msgboxstyle.Ok Only Msgboxstyle.Okc ancel Msgboxstyle.Yes No Msgboxstyle.Yes Nocancel Msgboxstyle.Ret
  • 36. Msgbox
  • 37. title icon Button
  • 38. Msgboxstyle.Crit ical Msgboxstyle.Que stion Msgboxstyle.Excl amation Msgboxstyle.Inf ormation
  • 39. Isnumer ic textbox true false If Isnumeric(textbox1. text) then Msgbox(“ ”) Textbox1.text=form at(cint(textbox1.tex t),”#,#.00”)
  • 40. Format Textbox1.text=format (date.today,“long date”) 29 2556
  • 41. 3%
  • 42. 3% Comment
  • 43. • •
  • 44. • Date time • Date time
  • 45. • Format • Format
  • 46. • 3 •
  • 47. • 3 2 • 7%
  • 48. • (Code) , (Name) , (QTY), Typepro) • 2%,3%,5%
  • 49. • - 2 25 - 1 - 2
  • 50. Code • • Textbox (Code) , (Name) (QTY) Typepro) • (Price) • 200 15 • 200 – 500 12
  • 51. • (Vat) 7% • (Discount) 15% • (NetAmount) • Clear • Exit
  • 52. • 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