RenderUrlRenderTask.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Web;
using NewsletterStudio.Model;
using umbraco.BusinessLogic;

namespace NewsletterStudio.Services.RenderTasks.Tasks
{
    public class RenderUrlRenderTask : RenderTask
    {
        public override void ProcessPreRender(RenderResult renderResult, RenderTaskParameters parameters)
        {
            Regex regex = new Regex(@"\[RenderUrl:([^]]*)\]");
            renderResult.MessageBody = regex.Replace(renderResult.MessageBody, GetNiceUrl);
        }

        private static string GetNiceUrl(Match match)
        {
            string urlToDownload = match.Groups[1].Value;

            // Get the content
            string strReturn;
            try
            {
                strReturn = Helper.DownloadWebPage(urlToDownload);
            }
            catch (Exception ex)
            {
                strReturn = string.Format("<div style='padding:10px; border: 1px dotted red;'>Could not load \"{0}\". Is the address correct?</div>", urlToDownload);
                Log.Add(LogTypes.Error, 0, string.Format("RenderUrlRenderTask: {0}. Is the url ok? Are you sure that the application is allowed to download content from the internet?", ex));
            }
            
            return strReturn;
        }

    }
}