ex0805.vb

来自「Visual Basic .NET程序设计教程源代码」· VB 代码 · 共 234 行

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

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

    End Sub

    '窗体重写 dispose 以清理组件列表。
    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 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents MainMenu1 As System.Windows.Forms.MainMenu
    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 Num1 As System.Windows.Forms.TextBox
    Friend WithEvents Num2 As System.Windows.Forms.TextBox
    Friend WithEvents Cacl1 As System.Windows.Forms.MenuItem
    Friend WithEvents Cacl2 As System.Windows.Forms.MenuItem
    Friend WithEvents AddO As System.Windows.Forms.MenuItem
    Friend WithEvents Min As System.Windows.Forms.MenuItem
    Friend WithEvents Mul As System.Windows.Forms.MenuItem
    Friend WithEvents Div As System.Windows.Forms.MenuItem
    Friend WithEvents Cacl3 As System.Windows.Forms.MenuItem
    Friend WithEvents Clean As System.Windows.Forms.MenuItem
    Friend WithEvents Quit As System.Windows.Forms.MenuItem
    Friend WithEvents result As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.MainMenu1 = New System.Windows.Forms.MainMenu
        Me.Cacl1 = New System.Windows.Forms.MenuItem
        Me.AddO = New System.Windows.Forms.MenuItem
        Me.Min = New System.Windows.Forms.MenuItem
        Me.Cacl2 = New System.Windows.Forms.MenuItem
        Me.Mul = New System.Windows.Forms.MenuItem
        Me.Div = New System.Windows.Forms.MenuItem
        Me.Cacl3 = New System.Windows.Forms.MenuItem
        Me.Clean = New System.Windows.Forms.MenuItem
        Me.Quit = New System.Windows.Forms.MenuItem
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.result = New System.Windows.Forms.Label
        Me.Num1 = New System.Windows.Forms.TextBox
        Me.Num2 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        '
        'MainMenu1
        '
        Me.MainMenu1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.Cacl1, Me.Cacl2, Me.Cacl3})
        '
        'Cacl1
        '
        Me.Cacl1.Index = 0
        Me.Cacl1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.AddO, Me.Min})
        Me.Cacl1.Text = "计算加、减"
        '
        'AddO
        '
        Me.AddO.Index = 0
        Me.AddO.Shortcut = System.Windows.Forms.Shortcut.CtrlA
        Me.AddO.Text = "加"
        '
        'Min
        '
        Me.Min.Index = 1
        Me.Min.Shortcut = System.Windows.Forms.Shortcut.CtrlB
        Me.Min.Text = "减"
        '
        'Cacl2
        '
        Me.Cacl2.Index = 1
        Me.Cacl2.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.Mul, Me.Div})
        Me.Cacl2.Text = "计算乘、除"
        '
        'Mul
        '
        Me.Mul.Index = 0
        Me.Mul.Shortcut = System.Windows.Forms.Shortcut.CtrlC
        Me.Mul.Text = "乘"
        '
        'Div
        '
        Me.Div.Index = 1
        Me.Div.Shortcut = System.Windows.Forms.Shortcut.CtrlD
        Me.Div.Text = "除"
        '
        'Cacl3
        '
        Me.Cacl3.Index = 2
        Me.Cacl3.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.Clean, Me.Quit})
        Me.Cacl3.Text = "清除与退出"
        '
        'Clean
        '
        Me.Clean.Index = 0
        Me.Clean.Shortcut = System.Windows.Forms.Shortcut.CtrlE
        Me.Clean.Text = "清除"
        '
        'Quit
        '
        Me.Quit.Index = 1
        Me.Quit.Shortcut = System.Windows.Forms.Shortcut.CtrlF
        Me.Quit.Text = "退出"
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("华文细黑", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(16, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(72, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "第一个数"
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("华文细黑", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.Location = New System.Drawing.Point(112, 24)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(72, 23)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "第二个数"
        '
        'Label3
        '
        Me.Label3.Font = New System.Drawing.Font("华文细黑", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label3.Location = New System.Drawing.Point(216, 24)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(72, 23)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "计算结果"
        '
        'result
        '
        Me.result.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.result.Font = New System.Drawing.Font("华文细黑", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.result.Location = New System.Drawing.Point(200, 56)
        Me.result.Name = "result"
        Me.result.Size = New System.Drawing.Size(80, 32)
        Me.result.TabIndex = 3
        '
        'Num1
        '
        Me.Num1.Font = New System.Drawing.Font("华文细黑", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Num1.Location = New System.Drawing.Point(16, 56)
        Me.Num1.Name = "Num1"
        Me.Num1.Size = New System.Drawing.Size(72, 30)
        Me.Num1.TabIndex = 4
        Me.Num1.Text = ""
        '
        'Num2
        '
        Me.Num2.Font = New System.Drawing.Font("华文细黑", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Num2.Location = New System.Drawing.Point(112, 56)
        Me.Num2.Name = "Num2"
        Me.Num2.Size = New System.Drawing.Size(72, 30)
        Me.Num2.TabIndex = 5
        Me.Num2.Text = ""
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 102)
        Me.Controls.Add(Me.Num2)
        Me.Controls.Add(Me.Num1)
        Me.Controls.Add(Me.result)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Menu = Me.MainMenu1
        Me.Name = "Form1"
        Me.Text = "算术运算"
        Me.ResumeLayout(False)

    End Sub

#End Region

 
    Private Sub AddO_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles AddO.Click
        Dim x As Double
        x = Val(Num1.Text) + Val(Num2.Text)
        Result.Text = Str(x)
    End Sub

    Private Sub Min_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Min.Click
        Dim x As Double
        x = Val(Num1.Text) - Val(Num2.Text)
        result.Text = Str(x)
    End Sub

    Private Sub Mul_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Mul.Click
        Dim x As Double
        x = Val(Num1.Text) * Val(Num2.Text)
        result.Text = Str$(x)
    End Sub

    Private Sub Div_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Div.Click
        Dim x As Double
        x = Val(Num1.Text) / Val(Num2.Text)
        result.Text = Str$(x)
    End Sub

    Private Sub Clean_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Clean.Click
        Num1.Text = ""
        Num2.Text = ""
        result.Text = ""
        Num1.Focus()       '输入光标移到文本框Num1
    End Sub

    Private Sub Quit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Quit.Click
        End
    End Sub
End Class