技術標籤：vb.net教程vb.net

主程式程式碼：

Option Explicit

Dim i As Double

Private Sub Command1_Click()
i = 0
Timer1.Interval = 50
Timer1.Enabled = True
End Sub

Private Sub Timer1_Timer()
i = i + 0.05
ProcessBar1.Percent = i
If i > 1 Then Timer1.Enabled = False
End Sub

控制元件程式碼：

Option Explicit

Public Enum FigureStyle

eOnlyValueInt
eOnlyValueDouble
ePercentInt
ePercentDouble
End Enum

Private dblMyPercent As Double
Private lngMyValue As Long
Private isShowMsg As Boolean
Private strMsg As String
Private intMsgStyle As FigureStyle

Private Max As Long, Min As Long

Private Sub UserControl_Initialize()
Min = 0
Max = 100
’ lngMyValue = 30

dblMyPercent = lngMyValue / (Max - Min)
lblValue.Caption = Int(dblMyPercent * 100) & “/100”
UserControl.Height = lblBase.Height
intMsgStyle = ePercentInt

Call setLabelSize

End Sub

Private Sub UserControl_Resize()
Call setLabelSize
End Sub

Private Sub setLabelSize()
lblBase.Move 0, 0, UserControl.ScaleWidth, UserControl.ScaleHeight

lblTop.Move lblBase.Left, lblBase.Top, dblMyPercent * lblBase.Width, lblBase.Height
lblValue.Move lblBase.Left, (lblBase.Height - lblValue.Height) / 2 + 20, lblBase.Width
End Sub
'set the value
Public Property Let Value(ByVal Value As Long)
If Value < Min Then
lngMyValue = Min
ElseIf Value > Max Then
lngMyValue = Max
Else
lngMyValue = Value
End If

dblMyPercent = lngMyValue / (Max - Min)
lblTop.Width = dblMyPercent * lblBase.Width
Select Case intMsgStyle
    Case eOnlyValueInt: strMsg = Int(dblMyPercent * 100)
    Case eOnlyValueDouble: strMsg = CStr(dblMyPercent * 100)
    Case ePercentInt: strMsg = Int(dblMyPercent * 100) & "/100"
    Case ePercentDouble: strMsg = CStr(dblMyPercent * 100) & "/100"
End Select
lblValue.Caption = strMsg

End Property
’
Public Property Get Value() As Long
Value = lngMyValue
End Property
'set the percent
Public Property Let Percent(ByVal Percent As Double)
If Percent < 0 Then
dblMyPercent = 0
ElseIf Percent > 1 Then
dblMyPercent = 1
Else
dblMyPercent = Percent
End If

lngMyValue = dblMyPercent * (Max - Min)
lblTop.Width = dblMyPercent * lblBase.Width
Select Case intMsgStyle
    Case eOnlyValueInt: strMsg = Int(dblMyPercent * 100)
    Case eOnlyValueDouble: strMsg = CStr(dblMyPercent * 100)
    Case ePercentInt: strMsg = Int(dblMyPercent * 100) & "/100"
    Case ePercentDouble: strMsg = CStr(dblMyPercent * 100) & "/100"
End Select
lblValue.Caption = strMsg

End Property

Public Property Get Percent() As Double
Percent = dblMyPercent
End Property
'is show msg
Public Property Let ShowMsg(ByVal ShowMsg As Boolean)
isShowMsg = ShowMsg
lblValue.Visible = isShowMsg
End Property

Public Property Get ShowMsg() As Boolean
ShowMsg = isShowMsg
End Property
'msg style
Public Property Let MsgStyle(ByVal MsgStyle As FigureStyle)
intMsgStyle = MsgStyle
Select Case intMsgStyle
Case eOnlyValueInt: strMsg = Int(dblMyPercent * 100)
Case eOnlyValueDouble: strMsg = CStr(dblMyPercent * 100)
Case ePercentInt: strMsg = Int(dblMyPercent * 100) & “/100”
Case ePercentDouble: strMsg = CStr(dblMyPercent * 100) & “/100”
End Select
lblValue.Caption = strMsg
End Property

Public Property Get MsgStyle() As FigureStyle
MsgStyle = intMsgStyle
End Property

以下為執行狀態：

整個工程下載：https://github.com/sysdzw/vbprocessbar