Visual Basic中,对于文本比较好的处理方式.

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "数制转换"
   ClientHeight    =   2865
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   2865
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "结束"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2760
      TabIndex        =   7
      Top             =   2280
      Width           =   975
   End
   Begin VB.CommandButton Command1 
      Cancel          =   -1  'True
      Caption         =   "转换"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   840
      TabIndex        =   6
      Top             =   2280
      Width           =   975
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   1320
      TabIndex        =   5
      Text            =   " "
      Top             =   1440
      Width           =   3255
   End
   Begin VB.ListBox List1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   300
      ItemData        =   "例5.17.frx":0000
      Left            =   2160
      List            =   "例5.17.frx":000E
      TabIndex        =   3
      Top             =   840
      Width           =   1575
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2160
      TabIndex        =   1
      Top             =   120
      Width           =   1575
   End
   Begin VB.Label Label3 
      Caption         =   "转换结果"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   120
      TabIndex        =   4
      Top             =   1560
      Width           =   975
   End
   Begin VB.Label Label2 
      Caption         =   "转换进制"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1080
      TabIndex        =   2
      Top             =   840
      Width           =   1095
   End
   Begin VB.Label Label1 
      Caption         =   "请输入十进制数"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   360
      TabIndex        =   0
      Top             =   240
      Width           =   1935
   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()  '“转换”按钮单击事件过程
    Dim y As String, x As Long, s As Integer
    Dim Ch As String, n As Integer
    Ch = "0123456789ABCDEF"   '换码表
    If List1.ListIndex = -1 Then
        n = 2                 '未选时，则以二进制转换
    Else
        n = List1.ItemData(List1.ListIndex)
    End If
    y = "": x = Val(Text1.Text)
    If x = 0 Then
        Text2.Text = ""
        MsgBox "请输入要转换的十进制数"
        Exit Sub
    End If
    Do While x > 0
        s = x Mod n           '取余数
        x = Int(x / n)        '求商
        y = Mid(Ch, s + 1, 1) + y   '换码，反序加入
    Loop
    Text2.Text = y
End Sub
Private Sub Command2_Click() '“结束”按钮单击事件过程
    Unload Me
End Sub