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(diào)用是 Windows 窗體設計器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 調(diào)用之后添加任何初始化

    End Sub

    '窗體重寫 dispose 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 lb1 As System.Windows.Forms.Label
    Friend WithEvents lb2 As System.Windows.Forms.Label
    Friend WithEvents bt1 As System.Windows.Forms.Button
    Friend WithEvents TB1 As System.Windows.Forms.TextBox
    Friend WithEvents TB2 As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.lb1 = New System.Windows.Forms.Label
        Me.lb2 = New System.Windows.Forms.Label
        Me.bt1 = New System.Windows.Forms.Button
        Me.TB1 = New System.Windows.Forms.TextBox
        Me.TB2 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        '
        'lb1
        '
        Me.lb1.Location = New System.Drawing.Point(8, 24)
        Me.lb1.Name = "lb1"
        Me.lb1.Size = New System.Drawing.Size(136, 32)
        Me.lb1.TabIndex = 0
        Me.lb1.Text = "球半徑"
        '
        'lb2
        '
        Me.lb2.Location = New System.Drawing.Point(8, 80)
        Me.lb2.Name = "lb2"
        Me.lb2.Size = New System.Drawing.Size(136, 32)
        Me.lb2.TabIndex = 1
        Me.lb2.Text = "球體積"
        '
        'bt1
        '
        Me.bt1.Location = New System.Drawing.Point(80, 176)
        Me.bt1.Name = "bt1"
        Me.bt1.Size = New System.Drawing.Size(112, 32)
        Me.bt1.TabIndex = 2
        Me.bt1.Text = "計算"
        '
        'TB1
        '
        Me.TB1.Location = New System.Drawing.Point(160, 24)
        Me.TB1.Name = "TB1"
        Me.TB1.Size = New System.Drawing.Size(112, 21)
        Me.TB1.TabIndex = 3
        Me.TB1.Text = ""
        '
        'TB2
        '
        Me.TB2.Location = New System.Drawing.Point(160, 80)
        Me.TB2.Name = "TB2"
        Me.TB2.Size = New System.Drawing.Size(112, 21)
        Me.TB2.TabIndex = 4
        Me.TB2.Text = ""
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.Add(Me.TB2)
        Me.Controls.Add(Me.TB1)
        Me.Controls.Add(Me.bt1)
        Me.Controls.Add(Me.lb2)
        Me.Controls.Add(Me.lb1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Public Function spereVolum(ByVal r As Double) As Double
        Dim volum As Double

        volum = (4.0 / 3.0) * Math.PI * Math.Pow(r, 3)
        Return volum
    End Function

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt1.Click
        Dim r, v As Double
        r = Double.Parse(TB1.Text)
        v = spereVolum(r)
        TB1.Text = r
        TB2.Text = v

    End Sub

End Class