There are two ways to upload a file in ASP.NET:
If Not hiddenFile.PostedFile Is Nothing And hiddenFile.PostedFile.ContentLength > 0 Then
Dim fn As String = System.IO.Path.GetFileName(hiddenFile.PostedFile.FileName)
Dim SaveLocation As String = Server.MapPath("images") & "\" & fn
Try
hiddenFile.PostedFile.SaveAs(SaveLocation)
Response.Write("The file has been uploaded.")
Catch Exc As Exception
Response.Write("Error: " & Exc.Message)
End Try
Else
Response.Write("Please select a file to upload.")
End If
Dim myFile As HttpPostedFile = hiddenFile.PostedFile 'or you can use Request.Files("hiddenFile")
If myFile IsNot Nothing Then
Dim nFileLen As Integer = myFile.ContentLength
If nFileLen > 0 Then
Dim myData As Byte() = New Byte(nFileLen - 1) {}
myFile.InputStream.Read(myData, 0, nFileLen)
Dim strFilename As String = Path.GetFileName(myFile.FileName)
WriteToFile(Server.MapPath(strFilename), myData)
End If
End If
Private Sub WriteToFile(ByVal strPath As String, ByRef Buffer As Byte())
Dim newFile As New FileStream(strPath, FileMode.Create)
newFile.Write(Buffer, 0, Buffer.Length)
newFile.Close()
End Sub
If you take a look at the SaveAs method of HttpPostedFile using reflector, you will notice that the above two methods of uploading file are the same.
