怎么Image控件绑定Access2000数据库中的图片？

yyuyes 2004-03-30 09:34:24

如何Image控件绑定Access2000数据库中的图片？

Access97的可以绑定，但是2000的就不行了（用ADODC）

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soohuu 2004-03-31

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用DAO控件必须用OLE控件绑定，但在ACCESS中要用插入对象的方法将图片插入到数据表的OLE字段中；如果用ADO控件必须用IMAGE或PICTUREBOX控件绑定，此时数据表的OLE字段必须用AppendChunk的方法写入图片的二进制流。

SuperZhou 2004-03-31

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用Data控件可以

trite 2004-03-31

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学习ing

northwolves 2004-03-30

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非要绑定可以用OLE

华芸智森 2004-03-30

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用绑定的方法我没有试过.给你一段代码试试看:

'/以流放问数据库中的二进制字段时的读/写标志
Public Enum SmRsType
RsWrite = 1
RsRead = 2
End Enum
'
'读写二进制数据(流)
'函数名:AdoStream
'参数: M_Conn ADODB连接,TabName 目标数据表,FldName 目标字段,WhereStr 更新条件,
' FileName 源文件名或由流生成的文件名,RsStyle 记录集的操作类型.W:File to Recode,R:Recode to File
'返回值:
'例: CALL AdoStream(P_Cnn,"AchGoods","GdsPhoto","Where gdsid='001'","C:\Tmp.Bmp","W")

Public Function AdoStream(M_Conn As ADODB.Connection, _
TabName As String, _
FldName As String, _
Optional WhereStr As String = "", _
Optional Filename As String, _
Optional RsStyle As SmRsType = RsWrite) As String

Dim StrSql As String
Dim TmpFileName As String
Dim Rs As New ADODB.Recordset
Dim AdoSem As New ADODB.Stream
Dim ReturnVal As String
Dim WorkPath As String
Dim RsType As Long
Dim RsStyleStr As String

On Error Resume Next

WorkPath = App.Path
If Right$(WorkPath, 1) <> "\" Then WorkPath = WorkPath & "\"
ReturnVal = ""
AdoSem.Type = adTypeBinary '流数据类型
AdoSem.Open '打开流
'/-----------------------------------------------------------
'将流写入记录集
RsType = RsStyle
RsStyleStr = Choose(RsType, "W", "R")
If RsStyleStr = "W" Then
If Left$(Trim$(UCase$(WhereStr)), Len("where")) <> UCase$("where") Then WhereStr = " Where " & Trim$(WhereStr)
StrSql = "Select Top 1 [" & TabName & "].[" & FldName & "] From [" & TabName & "] " & WhereStr
Set Rs = RsOpen(M_Conn, StrSql, False) '连接式记录集
If Not (Rs.EOF And Rs.BOF) Then
Rs.MoveFirst
AdoSem.LoadFromFile Filename '将文件LOAD到流
DoEvents
Rs.Fields(FldName).AppendChunk AdoSem.Read
Rs.Update
End If
AdoStream = ""
ElseIf RsStyle = "R" Then
'/将流从记录集中取出
If Len(Trim$(Filename)) = 0 Then Filename = "TmpFile.Bmp"
If Len(Trim$(Dir$(TmpFileName, vbNormal + vbHidden))) > 0 Then Kill Filename
If Left$(Trim$(UCase$(WhereStr)), Len("where")) <> UCase$("where") Then WhereStr = " Where " & Trim$(WhereStr)

StrSql = "Select Top 1 [" & TabName & "].[" & FldName & "] From [" & TabName & "] " & WhereStr
Set Rs = RsOpen(M_Conn, StrSql)
If Not (Rs.EOF And Rs.BOF) Then
Rs.MoveFirst
If Not (IsNull(Rs.Fields(FldName))) Then
TmpFileName = WorkPath & Filename
AdoSem.Write Rs.Fields(FldName).GetChunk(Rs.Fields(FldName).ActualSize)
DoEvents
AdoSem.SaveToFile TmpFileName, IIf(Len(Trim$(Dir$(TmpFileName, vbNormal + vbHidden))) > 0, adSaveCreateOverWrite, adSaveCreateNotExist)
AdoStream = TmpFileName
Else
AdoStream = ""
End If
Else
AdoStream = ""
End If
End If
AdoSem.Close: Set AdoSem = Nothing
Rs.Close: Set Rs = Nothing
Err.Clear
End Function