Just a side note... MSMQ is just a queueing construct supported by the
OS instead of you application. MSMQ can also be accessed by multiple
applications. One more benefit is that the items in a MSMQ queue will
be preserved if you application closes and reopens. A major downfall
could be that the some computer must be running the MSMQ service,
either the computer that your application is running on (this requires
your user setting up their computer) or you must have a server running
MSMQ.
I don't believe you need all of these extra benefits or overhead.
Instead you could use a System.Collections.Generic.Queue<T> (http://
msdn.microsoft.com/en-us/library/7977ey2c.aspx). This provides the
same FIFO functionality without having to go outside of your
application.
On Sep 4, 2:48 am, CK <[EMAIL PROTECTED]> wrote:
> The efficieny depends on many factors - the size of your internet
> pipe, the size of the galleries etc.
>
> MSMQ will allow a First In First Out (FIFO) mechanism for processing
> your queue.
>
> Basically there are a million ways you can do this, try some out and
> come back if you have any issues.
>
> Thanks,
>
> Chris
>
> On 2 Sep, 11:52, Mark <[EMAIL PROTECTED]> wrote:
>
> > 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 -- Hide quoted text -
>
> > - Show quoted text -
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