The user doesn't actually enter URLs of photos, but URLs of galleries
(or series of galleries)...and it's takes half a second to add them
(designed for ease of use)... so...the queue can get very large, very
fast. I know the code won't impose any limits on how many can be
asynchronously downloaded, but my question was more "is it efficient?"
-- ie, is it more efficient to download 10 photos, 2 at a time, or all
10 photos at once? Maybe 2 at a time will achieve higher download
speeds and finish earlier? I assume IE and other browsers/programs
impose these limits for a reason.
No, I havent looked into MSMQ, I'll have a look at that later. Thanks!
On Sep 2, 1:06 am, CK <[EMAIL PROTECTED]> wrote:
> there is a limit in Internet Explorer, but using code you shouldn't
> have an issue. How quickly will users be able to enter a new url
> compared to how quickly the pictures are downloaded?
>
> Have you looked into MSMQ - Microsoft Message Queue?
>
> On 1 Sep, 09:58, Mark <[EMAIL PROTECTED]> wrote:
>
> > Isn't there a cap on how many images you can download at once? Most
> > downloader/uploader programs only download/upload 2-8 files at a
> > time...any more than that is inefficient/eats all your bandwidth, no?
> > I would like to DL about 8 at a time, and queue the rest...
>
> > On Aug 20, 12:40 am, CK <[EMAIL PROTECTED]> wrote:
>
> > > Why build a listbox full of the items?
>
> > > I would write my method for downloading the images, then create a
> > > delegate with a matching signature. Every time the user enters text
> > > and clicks the button, call the delegate asynchronously, passing in
> > > the string. This means each image will be downloaded asynchronously
> > > with no queuing mechanism required.
>
> > > On 19 Aug, 23:50, Mark <[EMAIL PROTECTED]> wrote:
>
> > > > I'm making a Windows Forms Application. It contains a ListView, a
> > > > TextBox and a Button. The user can type some stuff in the TextBox,
> > > > click the Button, and it will be added to the ListView. I want to
> > > > process the items in the ListView and then pop them off list, using a
> > > > separate thread, so that the program doesn't hang and the user can add
> > > > more items while it's running. With what I have right now, I can't
> > > > remove items from the list from a different thread. I understand why
> > > > this causes problems, but I'm not sure how to fix it. I've tried
> > > > following a few tutorials to use delegates, but I can't seem to get it
> > > > to work. Here's what I've got right now:
>
> > > > using System;
> > > > using System.Collections.Generic;
> > > > using System.ComponentModel;
> > > > using System.Data;
> > > > using System.Drawing;
> > > > using System.Text;
> > > > using System.Windows.Forms;
> > > > using System.Text.RegularExpressions;
> > > > using System.Threading;
>
> > > > namespace ImageDownloader
> > > > {
> > > > public partial class Form1 : Form
> > > > {
> > > > public Form1()
> > > > {
> > > > InitializeComponent();
> > > > }
>
> > > > private void Download()
> > > > {
> > > > while (true)
> > > > {
> > > > if (listView1.Items.Count > 0)
> > > > {
> > > > listView1.Items.RemoveAt(0);
> > > > }
> > > > }
> > > > }
>
> > > > private void button1_Click(object sender, EventArgs e)
> > > > {
> > > > listView1.Items.Add(textBox1.Text);
> > > > textBox1.Text = "";
> > > > }
>
> > > > private void Form1_Load(object sender, EventArgs e)
> > > > {
> > > > Thread t = new Thread(new ThreadStart(Download));
> > > > t.Start();
> > > > }
> > > > }
>
> > > > }
>
> > > > This theoretically should just remove all the items from the list as
> > > > soon as they are added, one by one. Obviously I'll do some processing
> > > > on each item first, but I need to get this working before I get into
> > > > that :)
>
> > > > Thanks for any help.- Hide quoted text -
>
> > - Show quoted text -
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