How do I get the url for attachments on an SPListItem using C#?

Question

I have an SPListItem for which I would like to get the urls of all its attachments. The urls will be used as part of my custom web part which has an SPList of SPListItem items.

Answer 1

private IEnumerable<string> GetAttachmentUrls(SPListItem item)
{
  return from string fileName in item.Attachments
         orderby fileName
         select SPUrlUtility.CombineUrl(item.Attachments.UrlPrefix, fileName);
}

Answer 2

I have used the following code in an itemAdded event receiver.

        public override void ItemAdded(SPItemEventProperties properties)
        {
            if (properties.ListTitle == "Architecture Calendar")
            {

                base.ItemAdded(properties);
                string eventUrl = null;
                string AttachUrl=null;

                using (SPSite site = properties.OpenSite())
                {
                    using (SPWeb web = site.OpenWeb())
                    {
                        try
                        {
                            SPList listCalendar = web.Lists[properties.ListId];
                            SPItem itemCalendar = properties.ListItem;
                            SPSite mainSite = new SPSite(site.Url + @"/admin/");
                            SPWeb mainWeb = mainSite.OpenWeb();

                            **AttachUrl = properties.ListItem.Attachments.UrlPrefix + properties.ListItem.Attachments[0];**

                            SPList listIntegrated = mainWeb.Lists["IntegratedEvents"];
                            SPListItem itemIntegrated = listIntegrated.Items.Add();

                            **itemIntegrated["Picture"] = AttachUrl;**



                            itemIntegrated.Update();


                        }
                        catch (Exception Ex)
                        {
                            throw Ex;
                        }
                    }
                }
            }