下载mdb文件，并修改客户端:我需要下载一个mdb文件，修改客户端的可能性。我使用下面的代码，但阅读时不工作:
Private Sub btnDavid_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDavid.Click
Dim sPathInforme As String = String.Empty
sPathInforme = CType(Server.MapPath("plantillas/"), String)
Dim oFileStream As System.IO.FileStream
oFileStream = System.IO.File.OpenWrite(sPathInforme + "actas" + ".mdb")
Dim mystream As New MemoryStream
mystream = StreamToMemory(oFileStream)
oFileStream.Flush()
oFileStream.Close()
Response.Clear()
Response.AppendHeader("Content-Disposition", "attachment; filename=actas.mdb")
Response.AppendHeader("Content-Length", mystream.Length.ToString())
'Response.ContentType = "application/octet-stream"
Response.ContentType = "application/x-msaccess"
Response.BinaryWrite(mystream.ToArray())
Response.End()
mystream.Close()
End Sub
' open a file stream for reading, and load into a memory stream
Public Function StreamToMemory(ByVal path As String) As MemoryStream
Dim input As FileStream
Dim output As MemoryStream
input = New FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read)
output = StreamToMemory(input)
input.Close()
Return output
End Function
' transfer contents of input stream to memory stream
Public Function StreamToMemory(ByVal input As Stream) As IO.MemoryStream
Dim buffer(1023) As Byte
Dim count As Integer = 1024
Dim output As MemoryStream
' build a new stream
If input.CanSeek Then
output = New MemoryStream(input.Length)
Else
output = New MemoryStream
End If
' iterate stream and transfer to memory stream
Do
count = input.Read(buffer, 0, count)
If count = 0 Then Exit Do
output.Write(buffer, 0, count)
Loop
' rewind stream
output.Position = 0
' pass back
Return output
End Function