VB+SQL2000的高手请进

'*********************************************************
'* 名称：BackupDatabase
'* 功能：备份数据库
'* 控件：一个文本框和两个按钮（备份到和确定）
'*********************************************************
Public Sub BackupDatabase()
Dim cn As New ADODB.Connection
Dim s_path, s_dataexport As String
s_path = App.Path
Me.MousePointer = 11   '设置鼠标指针形状
'student1是需要备份的数据库名称
s_dataexport = "backup database student1 to disk='" + CommonDialog1.FileName + "'"
cn.Open "driver={sql server};server=" & d1 & ";database=student1;persist security info=false; userid=sa"  '数据库连接字符串
'这里不需要连接master数据库，即可完成备份
cn.BeginTrans
cn.Execute s_dataexport
Err.Number = 0
If Err.Number = 0 Then
    cn.CommitTrans
    MsgBox "数据备份成功！", vbInformation, "提示"
    MsgBox "数据备份文件存放路径:" & CommonDialog1.FileName, vbOKOnly, "提示"
    Unload Me
Else
    cn.RollbackTrans
    MsgBox "数据备份失败！请检查数据库是否正在打开！", vbCritical, "提示"
End If
cn.Close
Set cn = Nothing
Me.MousePointer = 1
End Sub'*********************************************************
'* 名称：RestoreDataBase
'* 功能：还原数据库
'* 控件：一个文本框和两个按钮（打开和确定）
'*********************************************************
Public Sub RestoreDataBase()
If Text1.Text = "" Then
    MsgBox "请选择要恢复的数据文件！", vbInformation, "提示"
    Exit Sub
Else
    ret = MsgBox("数据恢复操作将会覆盖以前的所有数据并且覆盖后无法恢复，您确定要进行恢复操作吗？", vbQuestion + vbOKCancel, "提示")
    If ret = vbOK Then
       Dim cn As New ADODB.Connection
       Dim sn As New ADODB.Recordset
       Dim s_restore As String
       Me.MousePointer = 11
       cn.Open "Provider=SQLOLEDB.1;Persist Security Info=False;server=" & d1 & ";Initial Catalog=master;Data Source=127.0.0.1;user id=sa;password=" & d3 & ""
       sn.Open "select  spid  from  sysprocesses  where  dbid=db_id('student1')", cn
        Do While Not sn.EOF
          cn.Execute "kill " & sn("spid")
          sn.MoveNext
        Loop
        sn.Close
        s_restore = "restore database student1 from disk='" + Trim(Text1.Text) + "'  with REPLACE"
        cn.Execute s_restore
         'Debug.Print gs_conn_string
         '此时需要连接master数据库才能完成数据恢复操作
         '同上student1为需要恢复的数据库
        s_restore = "restore database student1 from disk='" + Trim(Text1.Text) + "'"
         'text1一个用于记录需要恢复文件的地址的textbox
        cn.Execute s_restore
        cn.BeginTrans
        If Err.Number = 0 Then
            cn.CommitTrans
            MsgBox "数据恢复成功！", vbInformation, "提示"
            Command1.Enabled = True
            Label1.Visible = False
        Else
            cn.RollbackTrans
            MsgBox "数据恢复失败！", vbCritical, "提示"
            Command1.Enabled = True
        End If
        cn.Close
        Set cn = Nothing
        Me.MousePointer = 1
    Else
        Exit Sub
    End If                      '''''''''''''''''''''''''''''''''''''''''
    On Error Resume Next
    Dim DBC As New DataBaseConnection
    If db.State = 1 Then
       db.Close
    End If
    db.ConnectionString = DBC.SqlConnectString(d1, d2, d3)
    rs.CursorType = adOpenDynamic
    rs.CursorLocation = adUseClient
    rs.LockType = adLockOptimistic
    db.CursorLocation = adUseClient
    db.Open
    Set cmd.ActiveConnection = db
    If Err.Number Then
       MsgBox Err.Description, 16 + vbOKOnly, Err.Number
       Exit Sub
    End If
    db.DefaultDatabase = "student1"
    If Err.Number Then
       MsgBox Err.Description, 16 + vbOKOnly, Err.Number
       Exit Sub
    End If
End If
End Sub                      '''''''''''''''''''''''''''''''''''''''''''''如果当前没有与要恢复的数据库立连接，则不需要加单引号中的内容。如果希望恢复数据库之后继续建立连接，则需要写这部分代码。我要恢复数据库名称为student1，备份数据库的时候是在连接状态下进行的，但是恢复数据库不可以在数据库存在连接的状态下进行操作！代码的解决方法是：先连接SQL Server中主库master 库，在该库中的sysprocesses表中存放着所有连接到此数据库的连接信息，将这些连接信息用Kill语句删除。然后再恢复数据库student1，由于用Kill语句后，数据库已经被断开，所以在恢复完成后，再用系统最初的连接数据库代码连接上数据库student1。
'*********************************************************
'* 名称：OutDataToExcel
'* 功能：将MsFlexGrid控件中显示的内容输出到Excel表格中进行打印
'*********************************************************
Public Sub OutDataToExcel(Flex As MSFlexGrid)    '导出至Excel
    Dim s As String
    Dim i As Integer
    Dim j As Integer
    Dim k As Integer
    On Error GoTo Ert
    Me.MousePointer = 11
    Dim Excelapp As Excel.Application
    Set Excelapp = New Excel.Application
    On Error Resume Next
    DoEvents
    Excelapp.SheetsInNewWorkbook = 1
    Excelapp.Workbooks.Add
    Excelapp.ActiveSheet.Cells(1, 3) = s
    Excelapp.Range("C1").Select
    Excelapp.Selection.Font.FontStyle = "Bold"
    Excelapp.Selection.Font.Size = 16
    With Flex
        k = .Rows
        For i = 0 To k - 1
            For j = 0 To .Cols - 1
               DoEvents
               Excelapp.ActiveSheet.Cells(3 + i, j + 1) = "'" & .TextMatrix(i, j)
            Next j
        Next i
    End With
    Me.MousePointer = 0
    Excelapp.Visible = True
    Excelapp.Sheets.PrintPreview
Ert:
    If Not (Excelapp Is Nothing) Then
        Excelapp.Quit
    End If
End Sub
'sql server 7种的备份方法
If CN.State = adStateOpen Then CN.Close
    CN.ConnectionTimeout = 10
    connstr = "Driver={SQL Server};Server=" & LocalServer & ";UID=" & LocalUser & ";PWD=" & LocalPw & ";DATABASE=" & LocalDb
    CN.Open connstr
Nowtime = Format(Now, "hh-mm-ss")
dd = str(Date)
riqi = dd + "-" + NowtimeSql = "BACKUP DATABASE tablename TO disk='D:\mssql7\BACKUP\tablename" & riqi & "' with noinit"
CN.Execute (Sql)
还原数据库
restore DATABASE tablename from disk=......

调试易

VB+SQL2000的高手请进

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