VB实现SQL Server数据库备份/恢复

VB实现SQL Server数据库备份/恢复(4)         iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
        iSql = iRe(0)
        iRe.Close
        sDataBasePath = Left(iSql, InStrRev(iSql, "\"))
    End If
   
    '检查数据库是否存在
    If sReplaceExist = False Then
        iSql = "select 1 from master..sysdatabases  where name='" & sDataBaseName & "'"
        iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
        If iRe.EOF = False Then
            iReturn = "数据库已经存在!"
            iRe.Close
            GoTo lbExit
        End If
        iRe.Close
    End If
   
    '关闭用户进程,防止其它用户正在使用数据库,导致数据恢复失败
    iSql = "select spid from master..sysprocesses where dbid=db_id('" & sDataBaseName & "')"
    iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly
    While iRe.EOF = False
        iSql = "kill " & iRe(0)
        iDb.Execute iSql
        iRe.MoveNext
    Wend
    iRe.Close
   
    '获取数据库恢复信息
    iSql = "restore filelistonly from disk='" & sBackUpfileName & "'" & vbCrLf & _
        "with file=" & sBackupNumber
    iRe.Open iSql, iDb, adOpenKeyset, adLockReadOnly