editor.frm

打开及保存文本文件,为学员深入了解数据库编程语言提供方便。

VERSION 5.00
Object = "{F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.2#0"; "Comdlg32.ocx"
Begin VB.Form Form1 
   Appearance      =   0  'Flat
   Caption         =   "Editor with Common Dialog"
   ClientHeight    =   2445
   ClientLeft      =   1095
   ClientTop       =   1485
   ClientWidth     =   5055
   ForeColor       =   &H80000008&
   LinkMode        =   1  'Source
   LinkTopic       =   "Form1"
   PaletteMode     =   1  'UseZOrder
   ScaleHeight     =   2445
   ScaleWidth      =   5055
   Begin MSComDlg.CommonDialog OpenLog 
      Left            =   360
      Top             =   2505
      _ExtentX        =   847
      _ExtentY        =   847
      _Version        =   393216
   End
   Begin VB.TextBox txtConInfo 
      Appearance      =   0  'Flat
      Height          =   1500
      Left            =   255
      MultiLine       =   -1  'True
      ScrollBars      =   3  'Both
      TabIndex        =   0
      Top             =   180
      Width           =   4590
   End
   Begin VB.CommandButton openTxtFile 
      Appearance      =   0  'Flat
      Caption         =   "打开"
      Height          =   345
      Left            =   2490
      TabIndex        =   1
      Top             =   1785
      Width           =   975
   End
   Begin VB.CommandButton saveTxtFile 
      Appearance      =   0  'Flat
      Caption         =   "保存"
      Height          =   360
      Left            =   3525
      TabIndex        =   2
      Top             =   1785
      Width           =   975
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub openTxtFile_Click()
    Dim fhandle As Integer
    Dim Fname As String
    Dim TextFromFile As String, NextLine As String, CRLF As String
    CRLF = Chr$(13) + Chr$(10)
    OpenLog.DialogTitle = "打开TXT文本文件"
    OpenLog.Filter = "text files (*.txt)|*.txt|All files (*.*)|*.*"
    OpenLog.InitDir = "c:\"
    OpenLog.Action = 1
    Fname = OpenLog.FileName
    If Fname = "" Then
        Exit Sub
    End If

    fhandle = FreeFile
    Open Fname For Input As fhandle
    
    If LOF(fhandle) > 30000 Then
        MsgBox "您选择的文件太大，不能为您服务。"
    Else
        Do Until EOF(fhandle)
            Line Input #fhandle, NextLine
            TextFromFile = TextFromFile + NextLine + CRLF
        Loop
    End If
    txtConInfo.Text = TextFromFile
    Close fhandle
End Sub

Private Sub saveTxtFile_Click()
    Dim fhandle As Integer
    Dim Fname As String
    OpenLog.DialogTitle = "保存TXT文本文件"
    fhandle = FreeFile
    OpenLog.InitDir = "c:\"
    OpenLog.Action = 2
    Fname = OpenLog.FileName
    If Fname = "" Then
        Exit Sub
    End If
    Open Fname For Output As fhandle
    Print #fhandle, txtConInfo.Text
    Close fhandle

End Sub