http://www.code-magazine.com/Article.aspx?quickid=100163

I will be presenting a session titled as Extensible Output Caching with ASP.NET 4.

Here is a brief description of my session:

Through ASP.NET 1 to 3.5, output caching was stuck in memory. ASP.NET 4 makes it possible to use custom output-cache providers to use any kind of storage mechanism including databases, local and remove disks and distributed cache engines. In this session, we will build a custom output-cache provider that persists data in local hard-drive and we will learn how to configure an ASP.NET application to use some famous distributed cache engines. This is a coding and configuring oriented session.

Martin Kulov is of course there with 2 sessions. One about Visual Studio Test Professional 2010 and one about Branching and Merging with TFS 2010.

Another cool news is that Daron Yondem from Turkey will also be there with 2 Silverlight sessions.

Those of you living in Bulgaria or who can visit Bulgaria for the event, do not forget to register at http://www.msbgregistration.com before all the seats are booked.

Personally, I am really excited to see these features in VS 2010. It will definitely be better than FTP deployment because it will be able to handle a lot of scenarios like IIS settings, web.config changes depending on the environment (release, debug, staging, production, etc.), database changes, GAC, etc. If you want, you may go ahead and give it a try, it is a Beta 2 release though.

P.S.: Currently, only web application projects are supported. According to the team, they are considering to support web site projects and pre-compilation scenarios in the future.

You may read the complete post here.

Good news is that ASP.NET MVC’s final version will be released next month, in February 2009.

Some important changes might be listed as below.

• “Create Controller” action in Visual Studio context menu in Solution Explorer.
• “Add View” action in Visual Studio context menu inside an Action method’s body. This will let you create an empty View or a View that has been specially created for the type that is being passed as a parameter to the View. E.g.: return View(user) will create a basic View that has “user” entity’s type’s properties.
• Ability to customize any kind of templates being used by MVC using T4 (Text Template Transformation Toolkit) – further reading. Both machine-wide and project-wide!
• RC release now includes a out of the box MSBuild task so you can compile the views within your ASP.NET MVC project.
• Views can work without Code-Behind files. You can still use the advantages of strongly typed base type. E.g.: Inherits=”System.Web.Mvc.ViewPage<MyCustomType>”
• To access the Model’s data, you don’t need to use “ViewData.Model” anymore. “Model” is a top-level property from now on. “ViewData.Model” still works though.
• An out of the box MSBuild task is included in the setup if you want to compile the code within the views.
• You are not required to use Bind attribute with Prefix value set to an empty string [Bind(Prefix="")] by the default behavior.
• Supports protection to “Cross-site request forgery” attacks with an out of the box attribute: ValidateAntiForgeryToken. You may apply this attribute to the actions that you want to protect.
• FileResult (an out of the box ActionResult) to response a file instead of some other views using an action. Also there is the new File() method to create and return a file.

Visit http://www.asp.net/mvc for more details.

If your visitor uses Internet Explorer, you will get the local path to the file. E.g.: C:\somefile.txt. However, if your visitor uses Firefox, the FileName value that you will get will be only the file’s name. E.g.: somefile.txt.

To avoid problems, you may have the following check.

string filename = postedFile.FileName;
if (filename.IndexOf('\\') > -1)
{
    filename = filename.Substring(filename.LastIndexOf('\\') + 1);
}
else if (filename.IndexOf('/') > -1)
{
    filename = filename.Substring(filename.LastIndexOf('/') + 1);
}

‘string’ does not contain a definition for ‘MethodName’.

I have checked everything, including clearing the temporary ASP.NET files within framework folder (C:\Windows\Microsoft.NET\Framework\…), restarting Visual Studio and even restarting the OS. The target framework of the projects were all set to 3.5 as well. But unfortunately, nothing helped. Finally, when I compared what kind of configuration I could be missing from web.config, I have found out the missing (and the killer) part.

If you have a similar problem, try adding the following configuration section in your project’s web.config file.

  <system.codedom>
    <compilers>
      <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
        <providerOption name="CompilerVersion" value="v3.5"/>
        <providerOption name="WarnAsError" value="false"/>
      </compiler>
    </compilers>
  </system.codedom>

public static void AlertOnLoad(this UpdatePanel updatePanel, string key, string message)
{
    message = message.Replace("'", "\'").Replace("\r\n", "").Replace("\n", "");
    message = "alert('" + message + "');";
    AjaxControlToolkit.ToolkitScriptManager.RegisterStartupScript(updatePanel, updatePanel.GetType(), key, message, true);
}

public static void RedirectOnLoad(this UpdatePanel updatePanel, string key, string url)
{
    url = "top.location.href = '" + url + "';";
    AjaxControlToolkit.ToolkitScriptManager.RegisterStartupScript(updatePanel, updatePanel.GetType(), key, url, true);
}

public static void OpenWindowOnLoad(this UpdatePanel updatePanel, string key, string url)
{
    url = "window.open('" + url + "');";
    AjaxControlToolkit.ToolkitScriptManager.RegisterStartupScript(updatePanel, updatePanel.GetType(), key, url, true);
}

I will post a generic handler’s source code to show you how to do that.

Post is a class that has some basic properties like Url, Title, Teaser, etc. You may need to write your own class and implement these properties in a basic manner. Then you will need to create a GetPosts() method that returns a list of Post objects.

<%@ WebHandler Language="C#" Class="Rss" %>

using System;
using System.Web;
using System.Text;
using System.Xml;
using System.Collections.Generic;
using System.Linq;

public class Rss : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "text/xml";
        context.Response.ContentEncoding = Encoding.UTF8;
        context.Response.Write("<?xml version=\"1.0\" encoding=\"utf-8\" ?>");

        XmlTextWriter xmlWriter = new XmlTextWriter(context.Response.Output);

        xmlWriter.WriteStartElement("rss");
        xmlWriter.WriteAttributeString("version", "2.0");
        xmlWriter.WriteAttributeString("xmlns:dc", "http://purl.org/dc/elements/1.1/");

        xmlWriter.WriteStartElement("channel");

        #region Channel Details

        xmlWriter.WriteStartElement("title");
        xmlWriter.WriteCData("Sunali.com");
        xmlWriter.WriteEndElement(); // end title

        xmlWriter.WriteStartElement("link");
        xmlWriter.WriteCData("http://sunali.com");
        xmlWriter.WriteEndElement(); // end link

        xmlWriter.WriteStartElement("description");
        xmlWriter.WriteCData("Sunali.com Posts RSS Feed");
        xmlWriter.WriteEndElement(); // end description

        xmlWriter.WriteStartElement("language");
        xmlWriter.WriteString("tr-TR");
        xmlWriter.WriteEndElement(); // end language

        xmlWriter.WriteStartElement("pubDate");
        xmlWriter.WriteString(DateTime.Now.ToString("ddd, dd MMM yyyy hh:mm:ss zz"));
        xmlWriter.WriteEndElement(); // end pubDate
        #endregion

        // You are supposed to write your GetPosts method by yourself.
        List<Post> posts = GetPosts();

        foreach (Post post in posts)
        {
            xmlWriter.WriteStartElement("item");

            xmlWriter.WriteStartElement("title");
            xmlWriter.WriteCData(post.Title);
            xmlWriter.WriteEndElement(); // end title

            xmlWriter.WriteStartElement("link");
            xmlWriter.WriteCData(post.Url);
            xmlWriter.WriteEndElement(); // end link

            xmlWriter.WriteStartElement("description");
            xmlWriter.WriteCData(post.Teaser);
            xmlWriter.WriteEndElement(); // end description

            xmlWriter.WriteStartElement("dc:creator");
            xmlWriter.WriteCData(post.AuthorName);
            xmlWriter.WriteEndElement(); // end dc:creator

            xmlWriter.WriteStartElement("pubDate");
            xmlWriter.WriteString(post.PublishDate.ToString("ddd, dd MMM yyyy hh:mm:ss zz"));
            xmlWriter.WriteEndElement(); // end pubDate

            xmlWriter.WriteStartElement("guid");
            xmlWriter.WriteAttributeString("isPermaLink", "false");
            xmlWriter.WriteCData(post.Url);
            xmlWriter.WriteEndElement(); // end guid

            xmlWriter.WriteEndElement(); // end item
        }

        xmlWriter.WriteEndElement(); // end channel
        xmlWriter.WriteEndElement(); // end rss
    }

    public bool IsReusable {
        get {
            return false;
        }
    }
}