form1.vb

Source code for VB.NET book - Chapter 2

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 Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Button1 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.Location = New System.Drawing.Point(16, 40)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(128, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "阿拉伯数字："
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(128, 40)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(104, 26)
        Me.TextBox1.TabIndex = 1
        Me.TextBox1.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(24, 80)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(112, 24)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "中文数字："
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(120, 80)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(144, 96)
        Me.Label3.TabIndex = 3
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(96, 208)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(80, 32)
        Me.Button1.TabIndex = 4
        Me.Button1.Text = "转  换"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(8, 19)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label1)
        Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Name = "Form1"
        Me.Text = "中文数字"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Label3.Text = Convert(TextBox1.Text)
    End Sub
    Public Function convert(ByVal str As String) As String
        If Not IsNumeric(str) Then
            If Trim(str) <> "" Then MsgBox("无效数字")
            convert = "" : Exit Function
        End If
        Dim length, counter As Integer
        Dim Ch, TempCh, SeqCh1, SeqCh2, Str2Ch As String
        Str2Ch = "零壹贰叁肆伍陆柒捌玖"
        SeqCh1 = " 拾佰仟 拾佰仟 拾佰仟 拾佰仟"
        SeqCh2 = " 万亿兆"
        str = CStr(CDec(str))
        length = Len(str)
        For counter = 1 To length
            TempCh = Mid(Str2Ch, Val(Mid(str, counter, 1)) + 1, 1)
            If TempCh = "零" And length <> 1 Then
                If Mid(str, counter + 1, 1) = "0" Or (length - counter + 1) Mod 4 = 1 Then
                    TempCh = ""
                End If
            Else
                TempCh = TempCh & Trim(Mid(SeqCh1, length - counter + 1, 1))
            End If

            If (length - counter + 1) Mod 4 = 1 Then
                TempCh = TempCh & Mid(SeqCh2, (length - counter + 1) \ 4 + 1, 1)
                If counter > 3 Then
                    If Mid(str, counter - 3, 4) = "0000" Then TempCh = Microsoft.VisualBasic.Left(TempCh, Len(TempCh) - 1)
                End If
            End If
            Ch = Ch & Trim(TempCh)
        Next
        convert = Ch
    End Function
End Class