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*************************************************************************
'**
'** 使用 ADODB.Stream 保存/讀取文件到數(shù)據(jù)庫(kù)
'** 引用 Microsoft ActiveX Data Objects 2.5 Library 及以上版本
'**
'** ----- 數(shù)據(jù)庫(kù)連接字符串模板 ---------------------------------------
'** ACCESS數(shù)據(jù)庫(kù)
'** iConcStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False"  _
'**     ";Data Source=數(shù)據(jù)庫(kù)名"
'**
'** SQL數(shù)據(jù)庫(kù)
'** iConcStr = "Provider=SQLOLEDB.1;Persist Security Info=True;"  _
'**     "User ID=用戶名;Password=密碼;Initial Catalog=數(shù)據(jù)庫(kù)名;Data Source=SQL服務(wù)器名"
'**
'*************************************************************************
'
'保存文件到數(shù)據(jù)庫(kù)中
Sub s_SaveFile()
    Dim iStm As ADODB.Stream
    Dim iRe As ADODB.Recordset
    Dim iConcStr As String

    '數(shù)據(jù)庫(kù)連接字符串
    iConcStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False"  _
        ";Data Source=F:\My Documents\客戶資料1.mdb"

    '讀取文件到內(nèi)容
    Set iStm = New ADODB.Stream
    With iStm
        .Type = adTypeBinary    '二進(jìn)制模式
        .Open
        .LoadFromFile "c:\test.doc"
    End With

    '打開保存文件的表
    Set iRe = New ADODB.Recordset
    With iRe
        .Open "表", iConc, adOpenKeyset, adLockOptimistic
        .AddNew         '新增一條記錄
        .Fields("保存文件內(nèi)容的字段") = iStm.Read
        .Update
    End With

    '完成后關(guān)閉對(duì)象
    iRe.Close
    iStm.Close
End Sub

'從數(shù)據(jù)庫(kù)中讀取數(shù)據(jù),保存成文件
Sub s_ReadFile()
    Dim iStm As ADODB.Stream
    Dim iRe As ADODB.Recordset
    Dim iConc As String

    '數(shù)據(jù)庫(kù)連接字符串
    iConc = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False"  _
        ";Data Source=\\xz\c$\Inetpub\zj\zj\zj.mdb"

    '打開表
    Set iRe = New ADODB.Recordset
    iRe.Open "tb_img", iConc, adOpenKeyset, adLockReadOnly
    iRe.Filter = "id=64"

    '保存到文件
    Set iStm = New ADODB.Stream
    With iStm
        .Mode = adModeReadWrite
        .Type = adTypeBinary
        .Open
        .Write iRe("img")
        .SaveToFile "c:\test.doc"
    End With

    '關(guān)閉對(duì)象
    iRe.Close
    iStm.Close
End Sub

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