form1.vb

一个简单的数字计算和数字统计的VB小程序,可以用来参考做一些复杂程序的方法

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 Label1 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox4 As System.Windows.Forms.TextBox
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TextBox5 As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents TextBox6 As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.TextBox3 = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox4 = New System.Windows.Forms.TextBox
        Me.Label3 = New System.Windows.Forms.Label
        Me.TextBox5 = New System.Windows.Forms.TextBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Label4 = New System.Windows.Forms.Label
        Me.TextBox6 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(24, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(96, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "请输入三个整数"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(24, 56)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(56, 21)
        Me.TextBox1.TabIndex = 1
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(112, 56)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(56, 21)
        Me.TextBox2.TabIndex = 2
        Me.TextBox2.Text = ""
        '
        'TextBox3
        '
        Me.TextBox3.Location = New System.Drawing.Point(200, 56)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(56, 21)
        Me.TextBox3.TabIndex = 3
        Me.TextBox3.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(56, 116)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(48, 16)
        Me.Label2.TabIndex = 4
        Me.Label2.Text = "最大值"
        '
        'TextBox4
        '
        Me.TextBox4.Location = New System.Drawing.Point(112, 112)
        Me.TextBox4.Name = "TextBox4"
        Me.TextBox4.Size = New System.Drawing.Size(56, 21)
        Me.TextBox4.TabIndex = 5
        Me.TextBox4.Text = ""
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(56, 156)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(48, 16)
        Me.Label3.TabIndex = 6
        Me.Label3.Text = "最小值"
        '
        'TextBox5
        '
        Me.TextBox5.Location = New System.Drawing.Point(112, 152)
        Me.TextBox5.Name = "TextBox5"
        Me.TextBox5.Size = New System.Drawing.Size(56, 21)
        Me.TextBox5.TabIndex = 7
        Me.TextBox5.Text = ""
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(104, 224)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(64, 24)
        Me.Button1.TabIndex = 8
        Me.Button1.Text = "计算"
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(56, 188)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(48, 16)
        Me.Label4.TabIndex = 9
        Me.Label4.Text = "平方和"
        '
        'TextBox6
        '
        Me.TextBox6.Location = New System.Drawing.Point(112, 184)
        Me.TextBox6.Name = "TextBox6"
        Me.TextBox6.Size = New System.Drawing.Size(56, 21)
        Me.TextBox6.TabIndex = 10
        Me.TextBox6.Text = ""
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(280, 266)
        Me.Controls.Add(Me.TextBox6)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TextBox5)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.TextBox4)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.TextBox3)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.Text = "求最大最小值"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim a(2), data, Max, i, j, Min As Integer
        a(0) = Val(TextBox1.Text)
        a(1) = Val(TextBox2.Text)
        a(2) = Val(TextBox3.Text)
        'If Not TextBox1.Text Like "*[0-9]" Or Not TextBox2.Text Like "*[0-9]" Or Not TextBox3.Text Like "*[0-9]" Then
        'MsgBox("输入的数字不是整数！")
        'TextBox1.Text = " "
        'TextBox2.Text = " "
        'TextBox3.Text = " "
        'Else
        For i = 0 To 1
            For j = 1 To 2
                If (a(i) < a(j)) Then
                    data = a(i)
                    a(i) = a(j)
                    a(j) = data
                End If
            Next

        Next
        Max = a(0)
        Min = a(2)
        TextBox4.Text = Max
        TextBox5.Text = Min
        TextBox6.Text = a(0) * a(0) + a(1) * a(1) + a(2) * a(2)
    End Sub

    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged

        If TextBox1.Text Like "*[.]*" Then
            MsgBox("输入的数字不是整数！")
            TextBox1.Text = ""
        End If
    End Sub

    Private Sub TextBox2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox2.TextChanged

        If TextBox2.Text Like "*[.]*" Then
            MsgBox("输入的数字不是整数！")
            TextBox2.Text = ""
        End If
    End Sub

    Private Sub TextBox3_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox3.TextChanged

        If TextBox3.Text Like "*[.]*" Then
            MsgBox("输入的数字不是整数！")
            TextBox3.Text = ""
        End If
    End Sub
End Class