sjbf.frm

是基于C#语言的一个图书综合管理系统的开发案例,相当实用

VERSION 5.00
Object = "{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0"; "MSCOMCTL.OCX"
Begin VB.Form main_xtwh_sjbf 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "备份及恢复数据库"
   ClientHeight    =   4695
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   7995
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   4695
   ScaleWidth      =   7995
   StartUpPosition =   1  '所有者中心
   Begin VB.CommandButton Command3 
      Caption         =   "数据恢复"
      Height          =   420
      Left            =   2909
      TabIndex        =   9
      Top             =   4080
      Width           =   2175
   End
   Begin VB.Frame Frame2 
      Caption         =   "数据库备份文件所在路径"
      Height          =   3540
      Left            =   4020
      TabIndex        =   4
      Top             =   135
      Width           =   3915
      Begin VB.DriveListBox Drive1 
         Height          =   300
         Left            =   150
         TabIndex        =   7
         Top             =   255
         Width           =   3615
      End
      Begin VB.DirListBox Dir1 
         Height          =   720
         Left            =   150
         TabIndex        =   6
         Top             =   630
         Width           =   3615
      End
      Begin VB.FileListBox File1 
         Height          =   2070
         Left            =   150
         Pattern         =   "*.bak"
         TabIndex        =   5
         Top             =   1380
         Width           =   3615
      End
   End
   Begin VB.Frame Frame1 
      Caption         =   "备份卡列表"
      Height          =   3540
      Left            =   45
      TabIndex        =   2
      Top             =   135
      Width           =   3915
      Begin MSComctlLib.ListView ListView1 
         Height          =   3180
         Left            =   135
         TabIndex        =   3
         Top             =   270
         Width           =   3690
         _ExtentX        =   6509
         _ExtentY        =   5609
         Sorted          =   -1  'True
         LabelWrap       =   -1  'True
         HideSelection   =   -1  'True
         AllowReorder    =   -1  'True
         _Version        =   393217
         Icons           =   "ImageList1"
         SmallIcons      =   "ImageList1"
         ForeColor       =   -2147483640
         BackColor       =   -2147483643
         BorderStyle     =   1
         Appearance      =   1
         NumItems        =   0
      End
   End
   Begin VB.CommandButton Command2 
      Caption         =   "&E 退出"
      Height          =   420
      Left            =   5587
      TabIndex        =   1
      Top             =   4080
      Width           =   2175
   End
   Begin VB.CommandButton Command1 
      Caption         =   "数据备份"
      Height          =   420
      Left            =   232
      TabIndex        =   0
      Top             =   4080
      Width           =   2175
   End
   Begin MSComctlLib.ImageList ImageList1 
      Left            =   -135
      Top             =   825
      _ExtentX        =   1005
      _ExtentY        =   1005
      BackColor       =   -2147483643
      ImageWidth      =   32
      ImageHeight     =   32
      MaskColor       =   12632256
      _Version        =   393216
      BeginProperty Images {2C247F25-8591-11D1-B16A-00C0F0283628} 
         NumListImages   =   4
         BeginProperty ListImage1 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "sjbf.frx":0000
            Key             =   ""
         EndProperty
         BeginProperty ListImage2 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "sjbf.frx":005E
            Key             =   ""
         EndProperty
         BeginProperty ListImage3 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "sjbf.frx":00BC
            Key             =   ""
         EndProperty
         BeginProperty ListImage4 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "sjbf.frx":011A
            Key             =   ""
         EndProperty
      EndProperty
   End
   Begin VB.Label Label1 
      BackStyle       =   0  'Transparent
      ForeColor       =   &H00FF0000&
      Height          =   420
      Left            =   75
      TabIndex        =   8
      Top             =   3720
      Width           =   7890
   End
End
Attribute VB_Name = "main_xtwh_sjbf"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim itmX, key As String     '声明字符串变量
Dim a As Integer     '声明整型变量
Dim Mydatabase
Dim Cna As New ADODB.Connection
Dim Cnb As New ADODB.Connection

Private Sub Command3_Click()
If ListView1.SelectedItem.Text <> "" Then
    '恢复数据库
   Set Cnb = New ADODB.Connection
   Cnb.Open "Provider=MSDASQL.1;Persist Security Info=False;Data Source=Nbooks"
   SQL = "BACKUP LOG books TO DISK = '" + File1.Path + "\" + CStr(Format(Now, "yyyy年m月dd日")) + "备份日志(可删除)'" & _
   Chr(13) & Chr(10) & "alter database books set MULTI_USER" & Chr(13) & Chr(10) & _
   "use master RESTORE DATABASE books FROM DISK ='" + File1.Path + "\" + ListView1.SelectedItem.Text + "'" & Chr(13) & Chr(10) & _
   "use books alter database books set MULTI_USER"
'   Cnb.Execute SQL
'   Debug.Print SQL
'   SQL = "alter database books set MULTI_USER"
'   Cnb.Execute SQL
'   Debug.Print SQL
'   SQL = "use master RESTORE DATABASE books FROM DISK ='" + File1.Path + "\" + ListView1.SelectedItem.text + "'"
'   Cnb.Execute SQL
'   Debug.Print SQL
'   SQL = "use books alter database books set MULTI_USER"
   Debug.Print SQL
   Cnb.Execute SQL
   Cnb.Close
   MsgBox "数据库已还原。", , "提示"
 Else
   MsgBox "请选择还原文件。", , "提示"
   Cna.Close
 End If
 Call Form_Load

End Sub

Private Sub Form_Load()
  '添加数据备份卡到列表中
 ListView1.ListItems.Clear
 If File1.ListCount <> 0 Then
  a = 0
  Do While a <= File1.ListCount - 1
    File1.ListIndex = a
    key = File1.FileName
    If Right(key, 3) = "bak" Then
    Set itmX = ListView1.ListItems.Add(, , key, 1)
    End If
    a = a + 1
  Loop
 End If
End Sub
Private Sub Dir1_Change()
 File1.Path = Dir1.Path
 Form_Load  '调用Form_Load过程
 Label1.Caption = Dir1.Path & "\" & File1.FileName
End Sub
Private Sub Drive1_Change()
 Dir1.Path = Drive1.Drive
End Sub
Private Sub File1_Click()
 Label1.Caption = Dir1.Path & "\" & File1.FileName     '获取路径
End Sub
Private Sub Command1_Click()
Dim SQL As String
   '备份数据库
   Set Cna = New ADODB.Connection
   Cna.Open "Provider=MSDASQL.1;Persist Security Info=False;Data Source=Nbooks"
   SQL = "Backup DATABASE books to DISK='" + File1.Path + "\" + CStr(Format(Now, "yyyy年m月dd日")) + ".bak '"
   Cna.Execute SQL
   MsgBox "备份完成。", , "提示"
   File1.Refresh
   Cna.Close
End Sub
Private Sub Command2_Click()
 Unload Me
End Sub


Private Sub Form_Unload(Cancel As Integer)
MsgBox "请重新启动应用程序", , ""
End Sub