例题5.1 判断字符为字母或数字.frm

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VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "例题5.1 判断字符为字母或数字"
   ClientHeight    =   2550
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3705
   LinkTopic       =   "Form1"
   ScaleHeight     =   2550
   ScaleWidth      =   3705
   StartUpPosition =   3  'Windows Default
   Begin VB.TextBox Text1 
      Height          =   495
      Left            =   1215
      TabIndex        =   1
      Top             =   533
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "判断"
      Height          =   495
      Left            =   1275
      TabIndex        =   0
      Top             =   1523
      Width           =   1215
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
  Dim strc As String
  strc = Text1.Text
  If UCase(strc) >= "A" And UCase(strc) <= "Z" Then
     Print strc + "是字母字符"
  ElseIf strc >= "0" And strc <= "9" Then
     Print strc + "是数字字符"
  Else
     Print strc + "是其它字符"
  End If
End Sub