progress.vb

来自「Samples are organized by chapter, and th」· VB 代码 · 共 112 行

Imports System.ComponentModel
Public Class Progress
    Inherits System.Windows.Forms.UserControl

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'UserControl overrides dispose to clean up the component list.
    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

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents Bar As System.Windows.Forms.ProgressBar
    Friend WithEvents lblProgress As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Bar = New System.Windows.Forms.ProgressBar()
        Me.lblProgress = New System.Windows.Forms.Label()
        Me.SuspendLayout()
        '
        'Bar
        '
        Me.Bar.Anchor = ((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right)
        Me.Bar.Location = New System.Drawing.Point(4, 8)
        Me.Bar.Name = "Bar"
        Me.Bar.Size = New System.Drawing.Size(154, 32)
        Me.Bar.TabIndex = 0
        '
        'lblProgress
        '
        Me.lblProgress.Anchor = ((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right)
        Me.lblProgress.Location = New System.Drawing.Point(4, 48)
        Me.lblProgress.Name = "lblProgress"
        Me.lblProgress.Size = New System.Drawing.Size(152, 16)
        Me.lblProgress.TabIndex = 1
        Me.lblProgress.Text = "0% Done"
        Me.lblProgress.TextAlign = System.Drawing.ContentAlignment.TopCenter
        '
        'Progress
        '
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.lblProgress, Me.Bar})
        Me.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Name = "Progress"
        Me.Size = New System.Drawing.Size(164, 68)
        Me.ResumeLayout(False)

    End Sub

#End Region

    <Description("The current value (between 0 and Maximum) which sets the position of the progress bar"), _
     Category("Behavior"), _
     DefaultValue(0)> _
    Property Value() As Integer
        Get
            Return Bar.Value
        End Get
        Set(ByVal Value As Integer)
            Bar.Value = Value
            UpdateLabel()
        End Set
    End Property

    Property Maximum() As Integer
        Get
            Return Bar.Maximum
        End Get
        Set(ByVal Value As Integer)
            Bar.Maximum = Value
        End Set
    End Property

    Property [Step]() As Integer
        Get
            Return Bar.Step
        End Get
        Set(ByVal Value As Integer)
            Bar.Step = Value
        End Set
    End Property

    Public Sub PerformStep()
        Bar.PerformStep()
        UpdateLabel()
    End Sub

    Private Sub UpdateLabel()
        lblProgress.Text = ((Bar.Value * 100) \ Bar.Maximum).ToString() & "% Done"
    End Sub
End Class