clsdb.cls

来自「这是一个利用VB编写的中小企业ERP。功能比较全」· CLS 代码 · 共 63 行

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "ClsDB"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Option Explicit
Private Const CONN_STRING As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="
Public DB_PATH As String
'数据库连接
Public dbConn As New ADODB.Connection
'表明当前数据库的连接状态:False－未连接；True－已连接
Public dbStatus As Boolean
Public Function openDB() As Boolean
    Dim connString As String
    connString = "driver={SQL Server};server=" + Trim(Server) + ";uid=" + Trim(User) + ";pwd=" + Trim(Password) + ";database=ERP"
 
    dbConn.Open connString
    
    If Err.Number <> 0 Then MsgBox Err.Description
     GoTo errHandler
    
    openDB = True
    Exit Function
    
errHandler:
    openDB = False
    
End Function

Public Function closeDB() As Integer
    dbConn.Close
    
    dbStatus = False
End Function

Public Function exeSql(sqlStr As String, queryResult As ADODB.Recordset, Optional enableWrite As Boolean = True) As Boolean
On Error GoTo errHandler:
    Dim ret
    Set queryResult = New ADODB.Recordset
    
    If enableWrite Then
        queryResult.Open sqlStr, dbConn, adOpenStatic, adLockOptimistic
    Else
        queryResult.Open sqlStr, dbConn, adOpenStatic, adLockReadOnly
    End If
    
    exeSql = True
    Exit Function
    
errHandler:
    '    MsgBox Err.Description
    exeSql = False
    Exit Function
End Function