'将任何文件从数据库中下载到本地: Public Function LoadFile(ByVal col As ADODB.Field, ByVal FileName As String) As Boolean '获得binary数据 On Error GoTo myerr: Dim arrBytes() As Byte Dim FreeFileNumber As Integer lngsize = col.ActualSize arrBytes = col.GetChunk(lngsize) FreeFileNumber = FreeFile Open FileName For Binary Access Write As #FreeFileNumber Put #FreeFileNumber, , arrBytes Close #FreeFileNumber LoadFile = True myerr: If Err.Number <> 0 Then LoadFile = False Err.Clear End If End Function'将文件从本地上传到数据库中 Public Function UpLoadFile(ByVal FileName, ByVal col As ADODB.Field) As Boolean On Error GoTo myerr: Dim arrBytes() As Byte Dim FreeFileNumber As Integer FreeFileNumber = FreeFile Open FileName For Binary As #FreeFileNumber n = LOF(FreeFileNumber) ReDim arrBytes(1 To n) As Byte Get #FreeFileNumber, , arrBytes Close #FreeFileNumber col.AppendChunk (arrBytes) UpLoadFile = True myerr: If Err.Number <> 0 Then UpLoadFile = False Err.Clear End If End Function
Public Function LoadFile(ByVal col As ADODB.Field, ByVal FileName As String) As Boolean '获得binary数据
On Error GoTo myerr:
Dim arrBytes() As Byte
Dim FreeFileNumber As Integer
lngsize = col.ActualSize
arrBytes = col.GetChunk(lngsize)
FreeFileNumber = FreeFile
Open FileName For Binary Access Write As #FreeFileNumber
Put #FreeFileNumber, , arrBytes
Close #FreeFileNumber
LoadFile = True
myerr:
If Err.Number <> 0 Then
LoadFile = False
Err.Clear
End If
End Function'将文件从本地上传到数据库中
Public Function UpLoadFile(ByVal FileName, ByVal col As ADODB.Field) As Boolean
On Error GoTo myerr:
Dim arrBytes() As Byte
Dim FreeFileNumber As Integer
FreeFileNumber = FreeFile
Open FileName For Binary As #FreeFileNumber
n = LOF(FreeFileNumber)
ReDim arrBytes(1 To n) As Byte
Get #FreeFileNumber, , arrBytes
Close #FreeFileNumber
col.AppendChunk (arrBytes)
UpLoadFile = True
myerr:
If Err.Number <> 0 Then
UpLoadFile = False
Err.Clear
End If
End Function
其它就正常的建立数据库连接,打开记录集