给一个vb操作图像的例子给你，都是2进制，对视频数据一样操作
Dim cn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim stm As ADODB.Stream
Private 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
image类型
用picture显示
'以下两个函数是从数据库中读出图片的核心程序
Public Function GetImage(Optional Filename As String) As Variant
On Error GoTo ProcErr
Dim objRS As adodb.Recordset
Dim strSQL As String
Dim Chunk() As Byte
Set objRS = New adodb.Recordset
'strSQL = "select thumb from tblpictures where idpict='" & tblID(ThumbIndex) & "'"
strSQL = "select thumb from tblpictures where idpict= " & thumb
'strSQL = "select thumb from tblpictures where idpict='387'"
'db.Execute strSQL
objRS.Open strSQL, db, adOpenForwardOnly, adLockReadOnly
If objRS.BOF And objRS.EOF Then
GetImage = 0
GoTo ProcExit
ElseIf IsNull(objRS.Fields(0)) Then
'ErrNumber = 1001
'ErrDesc = "字段为空"
GoTo ProcExit
End If
Chunk() = objRS.Fields(0).GetChunk(objRS.Fields(0).ActualSize)
Set GetImage = Chunk2Image(Chunk(), Filename)
ProcExit:
On Error Resume Next
'objRS.Close
' Chunk() = objRS.Fields(0).GetChunk(0)
Set GetImage = Chunk2Image(Chunk(), Filename)
' Set objRS = Nothing
Exit Function
ProcErr:
GetImage = 0
Resume ProcExit
End Function
Private Function Chunk2Image(Chunk() As Byte, Optional Filename As String) As Variant
On Error GoTo ProcErr
Dim KeepFile As Boolean
Dim Datafile As Integer
KeepFile = True
If Trim(Filename) = "" Then
Filename = "c:\tmpxxdb.fil"
KeepFile = False
End If
Datafile = FreeFile
Open Filename For Binary Access Write As Datafile
Put Datafile, , Chunk()
Close Datafile
ProcExit:
Set Chunk2Image = LoadPicture(Filename)
On Error Resume Next
' If Not KeepFile Then Kill filename
Exit Function
ProcErr:
On Error Resume Next
Kill Filename
Chunk2Image = 0
End Function
