很多兄弟在这里问关于VB6读写数据库中的图片的问题，在此有一例，希有所启发。
;;;1，以人名和相关图片为例说明，数据库为Access，有如下字段：Name char,picture OLE object,FileLength Number。当为ms sql时，将picture改为lob即可。
;;;2，示例包含control：commom dialog,picture,listbox。
源码如下：
Option Explicit

Private Declare Function GetTempFileName Lib "kernel32" Alias "GetTempFileNameA" (ByVal lpszPath As String, ByVal lpPrefixString As String, ByVal wUnique As Long, ByVal lpTempFileName As String) As Long
Private Declare Function GetTempPath Lib "kernel32" Alias "GetTempPathA" (ByVal nBufferLength As Long, ByVal lpBuffer As String) As Long
Private Const MAX_PATH = 260

Private m_DBConn As ADODB.Connection

Private Const BLOCK_SIZE = 10000
' Return a temporary file name.
Private Function TemporaryFileName() As String
Dim temp_path As String
Dim temp_file As String
Dim length As Long

;;;;' Get the temporary file path.
;;;;temp_path = Space$(MAX_PATH)
;;;;length = GetTempPath(MAX_PATH, temp_path)
;;;;temp_path = Left$(temp_path, length)

;;;;' Get the file name.
;;;;temp_file = Space$(MAX_PATH)
;;;;GetTempFileName temp_path, "per", 0, temp_file
;;;;TemporaryFileName = Left$(temp_file, InStr(temp_file, Chr$(0)) - 1)
End Function
Private Sub Form_Load()
Dim db_file As String
Dim rs As ADODB.Recordset

;;;;' Get the database file name.
;;;;db_file = App.Path
;;;;If Right$(db_file, 1) <> "" Then db_file = db_file & ""
;;;;db_file = db_file & "dbpict.mdb"

;;;;' Open the database connection.
;;;;Set m_DBConn = New ADODB.Connection
;;;;m_DBConn.Open _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & db_file & ";" & _
"Persist Security Info=False"

;;;;' Get the list of people.
;;;;Set rs = m_DBConn.Execute("SELECT Name FROM People ORDER BY Name", , adCmdText)
;;;;Do While Not rs.EOF
lstPeople.AddItem rs!Name
rs.MoveNext
;;;;Loop

;;;;rs.Close
;;;;Set rs = Nothing
End Sub
Private Sub Form_Resize()
;;;;lstPeople.Height = ScaleHeight
End Sub


' Display the clicked person.
Private Sub lstPeople_Click()
Dim rs As ADODB.Recordset
Dim bytes() As Byte
Dim file_name As String
Dim file_num As Integer
Dim file_length As Long
Dim num_blocks As Long
Dim left_over As Long
Dim block_num As Long
Dim hgt As Single

;;;;picPerson.Visible = False
;;;;Screen.MousePointer = vbHourglass
;;;;DoEvents

;;;;' Get the record.
;;;;Set rs = m_DBConn.Execute("SELECT * FROM People WHERE Name='" & _
lstPeople.Text & "'", , adCmdText)
;;;;If rs.EOF Then Exit Sub

;;;;' Get a temporary file name.
;;;;file_name = TemporaryFileName()

;;;;' Open the file.
;;;;file_num = FreeFile
;;;;Open file_name For Binary As #file_num

;;;;' Copy the data into the file.
;;;;file_length = rs!FileLength
;;;;num_blocks = file_length / BLOCK_SIZE
;;;;left_over = file_length Mod BLOCK_SIZE

;;;;For block_num = 1 To num_blocks
bytes() = rs!Picture.GetChunk(BLOCK_SIZE)
Put #file_num, , bytes()
;;;;Next block_num

;;;;If left_over > 0 Then
bytes() = rs!Picture.GetChunk(left_over)
Put #file_num, , bytes()
;;;;End If

;;;;Close #file_num

;;;;' Display the picture file.
;;;;picPerson.Picture = LoadPicture(file_name)
;;;;picPerson.Visible = True

;;;;Width = picPerson.Left + picPerson.Width + Width - ScaleWidth
;;;;hgt = picPerson.Top + picPerson.Height + Height - ScaleHeight
;;;;If hgt < 1440 Then hgt = 1440
;;;;Height = hgt

;;;;Kill file_name
;;;;Screen.MousePointer = vbDefault
End Sub

Private Sub mnuRecordAdd_Click()
Dim rs As ADODB.Recordset
Dim person_name As String
Dim file_num As String
Dim file_length As String
Dim bytes() As Byte
Dim num_blocks As Long
Dim left_over As Long
Dim block_num As Long

;;;;person_name = InputBox("Name")
;;;;If Len(person_name) = 0 Then Exit Sub

;;;;dlgPicture.Flags = _
cdlOFNFileMustExist Or _
cdlOFNHideReadOnly Or _
cdlOFNExplorer
;;;;dlgPicture.CancelError = True
;;;;dlgPicture.Filter = "Graphics Files|*.bmp;*.ico;*.jpg;*.gif"

;;;;On Error Resume Next
;;;;dlgPicture.ShowOpen
;;;;If Err.Number = cdlCancel Then
Exit Sub
;;;;ElseIf Err.Number <> 0 Then
MsgBox "Error " & Format$(Err.Number) & _
;;;;" selecting file." & vbCrLf & Err.Description
Exit Sub
;;;;End If

;;;;' Open the picture file.
;;;;file_num = FreeFile
;;;;Open dlgPicture.FileName For Binary Access Read As #file_num

;;;;file_length = LOF(file_num)
;;;;If file_length > 0 Then
num_blocks = file_length / BLOCK_SIZE
left_over = file_length Mod BLOCK_SIZE

Set rs = New ADODB.Recordset
rs.CursorType = adOpenKeyset
rs.LockType = adLockOptimistic
rs.Open "Select Name, Picture, FileLength FROM People", m_DBConn

rs.AddNew
rs!Name = person_name
rs!FileLength = file_length

ReDim bytes(BLOCK_SIZE)
For block_num = 1 To num_blocks
;;;;Get #file_num, , bytes()
;;;;rs!Picture.AppendChunk bytes()
Next block_num

If left_over > 0 Then
;;;;ReDim bytes(left_over)
;;;;Get #file_num, , bytes()
;;;;rs!Picture.AppendChunk bytes()
End If

rs.Update
Close #file_num

lstPeople.AddItem person_name
lstPeople.Text = person_name
;;;;End If
End Sub