用vb.net制作一個小程序（2）
----制作“lucky7”程序
作者：高山
它是一個模擬幸運數字投幣機的游戲程序。此程序的用戶界面中包括兩個按鈕，3個幸運數字框，表示獲勝的數字圖象以及lucky 7標簽。
public class form1
inherits system.windows.forms.form
#region " windows 窗體設計器生成的代碼 "
public sub new()
mybase.new()
'該調用是 windows 窗體設計器所必需的。
initializecomponent()
'在 initializecomponent() 調用之后添加任何初始化
end sub
'窗體重寫處置以清理組件列表。
protected overloads overrides sub dispose(byval disposing as boolean)
if disposing then
if not (components is nothing) then
components.dispose()
end if
end if
mybase.dispose(disposing)
end sub
'windows 窗體設計器所必需的
private components as system.componentmodel.icontainer
'注意：以下過程是 windows 窗體設計器所必需的
'可以使用 windows 窗體設計器修改此過程。
'不要使用代碼編輯器修改它。
friend withevents button1 as system.windows.forms.button
friend withevents button2 as system.windows.forms.button
friend withevents label1 as system.windows.forms.label
friend withevents label2 as system.windows.forms.label
friend withevents label3 as system.windows.forms.label
friend withevents label4 as system.windows.forms.label
friend withevents picturebox1 as system.windows.forms.picturebox
<system.diagnostics.debuggerstepthrough()> private sub initializecomponent()
dim resources as system.resources.resourcemanager = new system.resources.resourcemanager(gettype(form1))
me.button1 = new system.windows.forms.button()
me.button2 = new system.windows.forms.button()
me.label1 = new system.windows.forms.label()
me.label2 = new system.windows.forms.label()
me.label3 = new system.windows.forms.label()
me.label4 = new system.windows.forms.label()
me.picturebox1 = new system.windows.forms.picturebox()
me.suspendlayout()
'
'button1
'
me.button1.location = new system.drawing.point(40, 104)
me.button1.name = "button1"
me.button1.tabindex = 0
me.button1.text = "spin"
'
'button2
'
me.button2.location = new system.drawing.point(40, 152)
me.button2.name = "button2"
me.button2.tabindex = 1
me.button2.text = "end"
'
'label1
'
me.label1.borderstyle = system.windows.forms.borderstyle.fixedsingle
me.label1.font = new system.drawing.font("隸書", 9.0!, system.drawing.fontstyle.bold, system.drawing.graphicsunit.point, ctype(134, byte))
me.label1.location = new system.drawing.point(136, 40)
me.label1.name = "label1"
me.label1.tabindex = 2
me.label1.textalign = system.drawing.contentalignment.middlecenter
'
'label2
'
me.label2.borderstyle = system.windows.forms.borderstyle.fixedsingle
me.label2.font = new system.drawing.font("隸書", 9.0!, system.drawing.fontstyle.bold, system.drawing.graphicsunit.point, ctype(134, byte))
me.label2.location = new system.drawing.point(264, 40)
me.label2.name = "label2"
me.label2.tabindex = 3
me.label2.textalign = system.drawing.contentalignment.middlecenter
'
'label3
'
me.label3.borderstyle = system.windows.forms.borderstyle.fixedsingle
me.label3.font = new system.drawing.font("隸書", 9.0!, system.drawing.fontstyle.bold, system.drawing.graphicsunit.point, ctype(134, byte))
me.label3.location = new system.drawing.point(400, 40)
me.label3.name = "label3"
me.label3.size = new system.drawing.size(100, 24)
me.label3.tabindex = 4
me.label3.textalign = system.drawing.contentalignment.middlecenter
'
'label4
'
me.label4.forecolor = system.drawing.color.red
me.label4.location = new system.drawing.point(24, 200)
me.label4.name = "label4"
me.label4.size = new system.drawing.size(120, 120)
me.label4.tabindex = 5
me.label4.text = "lucky seven"
'
'picturebox1
'
me.picturebox1.image = ctype(resources.getobject("picturebox1.image"), system.drawing.bitmap)
me.picturebox1.location = new system.drawing.point(208, 120)
me.picturebox1.name = "picturebox1"
me.picturebox1.size = new system.drawing.size(288, 208)
me.picturebox1.sizemode = system.windows.forms.pictureboxsizemode.stretchimage
me.picturebox1.tabindex = 6
me.picturebox1.tabstop = false
me.picturebox1.visible = false
'
'form1
'
me.autoscalebasesize = new system.drawing.size(6, 14)
me.clientsize = new system.drawing.size(528, 350)
me.controls.addrange(new system.windows.forms.control() {me.picturebox1, me.label4, me.label3, me.label2, me.label1, me.button2, me.button1})
me.name = "form1"
me.text = "form1"
me.resumelayout(false)
end sub
#end region
private sub label3_click(byval sender as system.object, byval e as system.eventargs) handles label3.click
end sub
private sub button2_click(byval sender as system.object, byval e as system.eventargs) handles button2.click
end
end sub
private sub button1_click(byval sender as system.object, byval e as system.eventargs) handles button1.click
picturebox1.visible = false '隱藏圖片
'rnd函數生成０到１之間的隨機數（帶有一個小數點和幾個小數位），int函數將這幾個數乘以１０
'后在乘以１０后再四舍五入得到一個整數，這樣就產生了０到９的隨機整數．
label1.text = cstr(int(rnd() * 10)) '選擇數字
label2.text = cstr(int(rnd() * 10))
label3.text = cstr(int(rnd() * 10))
'如果人一個標題為7則顯示圖片
if (label1.text = "7") or (label2.text = "7") or (label3.text = "7") then
picturebox1.visible = true
beep()
end if
end sub
end class
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