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()

        '該調用是 Windows 窗體設計器所必需的。
        InitializeComponent()

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

    End Sub

    '窗體重寫處置以清理組件列表。
    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。
    <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 = "你輸入的是大寫英文字母'"
                        msg = msg & Chr(Asc(userinput)) & "'."
                    Case 97 To 122
                        msg = "你輸入的是小寫英文字母'"
                        msg = msg & Chr(Asc(userinput)) & "'."
                    Case Else
                        msg = "你沒有輸入英文字母或數字"
                End Select
            End If
        Else
            Select Case CDbl(userinput)
                Case 1, 3, 5, 6, 9
                    msg = userinput & "是一個奇數."
                Case 0, 2, 4, 6, 8
                    msg = userinput & "是一個偶數."
                Case Else
                    msg = "你輸入的數字超出了"
                    msg = msg & "所允許的范圍."
            End Select
        End If
        MsgBox(msg, , "")
    End Sub

  
End Class