'**************************读图片文件**************************************
Sub GetPicFromDB(cn As ADODB.Connection)
On Error Resume Next
Dim fld As Field
Dim strTemp As String
Dim stm As ADODB.Stream
Set stm = New ADODB.Stream
'strTemp = "c:\temp.bmp"
Set rs1 = New ADODB.Recordset
rs1.Open "select * from rs_http where htbh='" & frm_manage.Grid2.TextMatrix(frm_manage.Grid2.RowSel, 0) & "'", cn, , , adCmdText
While Not rs1.EOF
'*********将数据库中的文件读到硬盘上*************************
' strTemp = App.Path + "\temp\" + rs1!Name '`临时文件,用来保存读出的图片 With stm
.Type = adTypeBinary
.Open
.Write rs1("tp").value
strTemp = App.Path & "\temp1\" & rs1!Name
.SaveToFile strTemp, adSaveCreateOverWrite
.Close
End With
Set itemX = lvwPic.ListItems.add(, App.Path & "\temp1\" & rs1!Name, rs1!Name, 1, 1)
itemX.SubItems(1) = rs1!bz
rs1.MoveNext
Wend
Set stm = Nothing
rs1.Close
Set rs1 = Nothing
End Sub'******************将图片文件保存到数据库中*************************
Sub SavePicToDb(cn As ADODB.Connection, table1 As String, field1 As String, file1 As String, id1 As String)
On Error Resume Next
Dim stm As ADODB.Stream
Set stm = New ADODB.Stream
Set rs1 = New ADODB.Recordset
rs1.Open "select * from " & table1 & " where id = " & id1, cn, adOpenKeyset, adLockOptimistic
With stm
.Type = adTypeBinary
.Open
.LoadFromFile file1 'DLG.FileName
End With
With rs1
.Fields(field1) = stm.Read
.Update
End With
rs1.Close
Set rs1 = Nothing
End Sub
Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim stm As ADODB.StreamPrivate Sub SavePictureToDB(cn As ADODB.Connection)
'将BMP图片存入数据库
On Error GoTo EH
Set stm = New ADODB.Stream
rs.Open "select ImagePath,ImageValue from tbl_Image", cn, adOpenKeyset, adLockOptimistic
CommonDialog1.ShowOpen
Text1.Text = CommonDialog1.FileName
With stm
.Type = adTypeBinary
.Open
.LoadFromFile CommonDialog1.FileName
End With
With rs
.AddNew
.Fields("ImagePath") = Text1.Text
.Fields("ImageValue") = stm.Read
.Update
End With
rs.Close
Set rs = Nothing
Exit Sub
EH: MsgBox Err.Description, vbInformation, "Error"
End Sub
Private Sub LoadPictureFromDB(cn As ADODB.Connection)
'载数据库中读出BMP图片
On Error GoTo EH
Dim strTemp As String
Set stm = New ADODB.Stream
strTemp = "c:\temp.tmp" '临时文件,用来保存读出的图片
rs.Open "select ImagePath,ImageValue from tbl_image", cn, , , adCmdText
With stm
.Type = adTypeBinary
.Open
.Write rs("ImageValue")
.SaveToFile strTemp, adSaveCreateOverWrite
.Close
End With
Image1.Picture = LoadPicture(strTemp)
Set stm = Nothing
rs.Close
Set rs = Nothing
Exit Sub
EH: MsgBox Err.Description, vbInformation, "Error"
End Sub
'**
'** 使用 ADODB.Stream 保存/读取文件到数据库
'** 引用 Microsoft ActiveX Data Objects 2.5 Library 及以上版本
'**
'** ----- 数据库连接字符串模板 ---------------------------------------
'** ACCESS数据库
'** iConcStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
'** ";Data Source=数据库名"
'**
'** SQL数据库
'** iConcStr = "Provider=SQLOLEDB.1;Persist Security Info=True;" & _
'** "User ID=用户名;Password=密码;Initial Catalog=数据库名;Data Source=SQL服务器名"
'**
'*************************************************************************
'
'保存文件到数据库中
Sub s_SaveFile()
Dim iStm As ADODB.Stream
Dim iRe As ADODB.Recordset
Dim iConcStr As String
'数据库连接字符串
iConcStr = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
";Data Source=F:\My Documents\客户资料1.mdb"
'读取文件到内容
Set iStm = New ADODB.Stream
With iStm
.Type = adTypeBinary '二进制模式
.Open
.LoadFromFile "c:\test.doc"
End With
'打开保存文件的表
Set iRe = New ADODB.Recordset
With iRe
.Open "表", iConc, adOpenKeyset, adLockOptimistic
.AddNew '新增一条记录
.Fields("保存文件内容的字段") = iStm.Read
.Update
End With
'完成后关闭对象
iRe.Close
iStm.Close
End Sub'从数据库中读取数据,保存成文件
Sub s_ReadFile()
Dim iStm As ADODB.Stream
Dim iRe As ADODB.Recordset
Dim iConc As String
'数据库连接字符串
iConc = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False" & _
";Data Source=\\xz\c$\Inetpub\zj\zj\zj.mdb"
'打开表
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
'关闭对象
iRe.Close
iStm.Close
End Sub
http://expert.csdn.net/Expert/topic/2403/2403509.xml?temp=.4633905
交流--数据库中存/取文件(zjcxc)