Improve company productivity with a Business Account.Sign Up

x
?
Solved

Efficiently downloading large number of webpages using Visual Basic 2008

Posted on 2007-11-27
1
Medium Priority
?
160 Views
Last Modified: 2010-04-30
Im currently using this code to download binary data from about 2000 uri's. The code works fine, however, once it gets near the 600th request it starts to slow down considerably. Any help with optomizing my current method or a point towards a different one is greatly appreciated thanks.
Private Function getpiece(ByVal hash As String, ByVal piece As String)
 
        Dim txturi As String = (removed)
        Dim pieceuri As New Uri(txturi)
        Dim piecerequest As System.Net.WebRequest = System.Net.WebRequest.Create(pieceuri)
        Dim pieceresponse As System.Net.WebResponse = piecerequest.GetResponse()
        ' Get the stream containing content returned by the server.
        Dim dataStream As Stream = pieceresponse.GetResponseStream()
        ' Open the stream using a StreamReader for easy access.
        Dim reader As New System.IO.BinaryReader(dataStream)
        ' Read the content.
        Dim responseFromServer() As Byte = reader.ReadBytes(264144)
        Application.DoEvents()
        reader.Close()
        dataStream.Close()
        pieceresponse.Close()
        Return responseFromServer
 
    End Function

Open in new window

0
Comment
Question by:dead1ne
1 Comment
 
LVL 38

Accepted Solution

by:
PaulHews earned 2000 total points
ID: 20360930
The only thing I can think of changing is to use

dataStream.Dispose()

instead of closing the stream.  But I'll see if anyone else has anything to add.
0

Featured Post

Get your problem seen by more experts

Be seen. Boost your question’s priority for more expert views and faster solutions

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

The debugging module of the VB 6 IDE can be accessed by way of the Debug menu item. That menu item can normally be found in the IDE's main menu line as shown in this picture.   There is also a companion Debug Toolbar that looks like the followin…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

589 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question