frmdatabackup.frm

本人用VB 6.0和ACCESS编写的水费管理系统

VERSION 5.00
Object = "{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0"; "MSCOMCTL.OCX"
Begin VB.Form frmDataBackup 
   Caption         =   "数据备份"
   ClientHeight    =   3255
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6435
   Icon            =   "frmDataBackup.frx":0000
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3255
   ScaleWidth      =   6435
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton cmdCancel 
      Cancel          =   -1  'True
      Caption         =   "取消(&C)"
      Height          =   375
      Left            =   3750
      TabIndex        =   7
      Top             =   2640
      Width           =   1095
   End
   Begin VB.CommandButton cmdOK 
      Caption         =   "确定(&E)"
      Default         =   -1  'True
      Height          =   375
      Left            =   1590
      TabIndex        =   6
      Top             =   2640
      Width           =   1095
   End
   Begin MSComctlLib.ProgressBar ProgressBar1 
      Height          =   375
      Left            =   840
      TabIndex        =   5
      Top             =   1920
      Visible         =   0   'False
      Width           =   4815
      _ExtentX        =   8493
      _ExtentY        =   661
      _Version        =   393216
      Appearance      =   1
   End
   Begin VB.Frame Frame1 
      Height          =   1455
      Left            =   750
      TabIndex        =   0
      Top             =   120
      Width           =   4935
      Begin VB.OptionButton optBackupHard 
         Caption         =   "备份到硬盘"
         Height          =   255
         Left            =   720
         TabIndex        =   2
         Top             =   840
         Width           =   1215
      End
      Begin VB.OptionButton optBackupFloppy 
         Caption         =   "备份到软盘"
         Height          =   255
         Left            =   720
         TabIndex        =   1
         Top             =   360
         Value           =   -1  'True
         Width           =   1215
      End
      Begin VB.CheckBox chkBackupData 
         Caption         =   "备份数据库"
         Height          =   255
         Left            =   3000
         TabIndex        =   4
         Top             =   840
         Value           =   1  'Checked
         Width           =   1215
      End
      Begin VB.CheckBox chkBackupSystem 
         Caption         =   "备份系统库"
         Height          =   255
         Left            =   3000
         TabIndex        =   3
         Top             =   360
         Value           =   1  'Checked
         Width           =   1215
      End
   End
End
Attribute VB_Name = "frmDataBackup"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim fso As New FileSystemObject
Dim drv As Drive, fil As File

Private Sub cmdCancel_Click()
    Unload Me
End Sub

Private Sub cmdOK_Click()
    Dim strAppName As String, strNewName As String, i As Integer
    If optBackupFloppy.Value = True Then    '备份到软盘
        Set drv = fso.GetDrive("A:")
        If Not drv.IsReady Then
            MsgBox "驱动器没有准备好!", vbCritical + vbOKOnly, "数据备份"
            Exit Sub
        End If
        If Not fso.FolderExists("A:\Backup") Then
            fso.CreateFolder ("A:\Backup")
        End If
        If chkBackupSystem.Value = Checked Then     '备份系统库
            strAppName = App.Path & "\权限表.mdb"
            strNewName = "A:\Backup\权限表.mdb"
            CopyFileFloppy strAppName, strNewName
            strAppName = App.Path & "\用户档案.mdb"
            strNewName = "A:\Backup\用户档案.mdb"
            CopyFileFloppy strAppName, strNewName
            strAppName = App.Path & "\水费标准库.mdb"
            strNewName = "A:\Backup\水费标准库.mdb"
            CopyFileFloppy strAppName, strNewName
        End If
        If chkBackupData.Value = Checked Then       '备份数据库
            strAppName = App.Path & "\Main" & Year(Now) & Month(Now) & ".mdb"
            strNewName = "A:\Backup\Main" & Year(Now) & Month(Now) & ".mdb"
            If Not fso.FileExists(strAppName) Then
                MsgBox Year(Now) & "年" & Month(Now) & "月数据库不存在!", vbCritical + vbOKOnly, "数据备份"
                Exit Sub
            End If
            CopyFileFloppy strAppName, strNewName
        End If
        '设置进度条
        ProgressBar1.Visible = True
        ProgressBar1.Min = 1: ProgressBar1.Max = 100
        For i = 1 To 100
            ProgressBar1.Value = i
        Next
        ProgressBar1.Visible = False
    ElseIf optBackupHard.Value = True Then      '备份到硬盘
        If Not fso.FolderExists(App.Path & "\Backup") Then
            fso.CreateFolder (App.Path & "\Backup")
        End If
        If chkBackupSystem.Value = Checked Then '备份系统库
            strAppName = App.Path & "\权限表.mdb"
            strNewName = App.Path & "\Backup\权限表.mdb"
            fso.CopyFile strAppName, strNewName
            strAppName = App.Path & "\用户档案.mdb"
            strNewName = App.Path & "\Backup\用户档案.mdb"
            fso.CopyFile strAppName, strNewName
            strAppName = App.Path & "\水费标准库.mdb"
            strNewName = App.Path & "\Backup\水费标准库.mdb"
            fso.CopyFile strAppName, strNewName
        End If
        If chkBackupData.Value = Checked Then   '备份数据库
            strAppName = App.Path & "\Main" & Year(Now) & Month(Now) & ".mdb"
            strNewName = App.Path & "\Backup\Main" & Year(Now) & Month(Now) & ".mdb"
            If Not fso.FileExists(strAppName) Then
                MsgBox Year(Now) & "年" & Month(Now) & "月数据库不存在!", vbCritical + vbOKOnly, "数据备份"
                Exit Sub
            End If
            fso.CopyFile strAppName, strNewName
        End If
        '设置进度条
        ProgressBar1.Visible = True
        ProgressBar1.Min = 1: ProgressBar1.Max = 100
        For i = 1 To 100
            ProgressBar1.Value = i
        Next
        ProgressBar1.Visible = False
    End If
    MsgBox "备份完毕!", vbInformation + vbOKOnly, "数据备份"
    Unload Me
End Sub

Private Sub CopyFileFloppy(strAppName As String, strNewName As String)
    On Error GoTo ErrorHandler      '错误处理
    Set fil = fso.GetFile(strAppName)
    fso.CopyFile strAppName, strNewName
ErrorHandler:
    If drv.FreeSpace < fil.Size Then
        MsgBox "磁盘空间不够!请换盘", vbCritical + vbOKOnly, "数据备份"
        Resume
    End If
End Sub