form1.vb

来自「Visual Basic .NET程序设计教程源代码」· VB 代码 · 共 78 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

    '窗体重写处置以清理组件列表。
    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。
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Name = "Form1"
        Me.Text = "Form1"

    End Sub

#End Region


    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim msg, userinput
        userinput = InputBox(msg)
        If Not IsNumeric(userinput) Then
            If Len(userinput) <> 0 Then
                Select Case Asc(userinput)
                    Case 65 To 90
                        msg = "你输入的是大写英文字母'"
                        msg = msg & Chr(Asc(userinput)) & "'."
                    Case 97 To 122
                        msg = "你输入的是小写英文字母'"
                        msg = msg & Chr(Asc(userinput)) & "'."
                    Case Else
                        msg = "你没有输入英文字母或数字"
                End Select
            End If
        Else
            Select Case CDbl(userinput)
                Case 1, 3, 5, 6, 9
                    msg = userinput & "是一个奇数."
                Case 0, 2, 4, 6, 8
                    msg = userinput & "是一个偶数."
                Case Else
                    msg = "你输入的数字超出了"
                    msg = msg & "所允许的范围."
            End Select
        End If
        MsgBox(msg, , "")
    End Sub

  
End Class