I often see people post this error message in the forum. So, I decide to make the post. Hope this tutorial will help

Server Error in '/' Application

This collection already contains an address with scheme http.  There can be at most one address per scheme in this collection.
Parameter name: item

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: This collection already contains an address with scheme http.  There can be at most one address per scheme in this collection.
Parameter name: item

Solution:

The solution, since WCF services hosted in IIS can have only one Base Address was to create a custom service factory to intercept and remove the additional unwanted base addresses that IIS was providing. In my case IIS was providing:

domain.com
www.domain.com
dedicatedserver1234.hostingcompany.com

We are able to customize our .svc file to specif a custom serive factory

We are then able to create our custom factory by inheriting from ServiceHostFactory and overriding as required

    class CustomHostFactory : ServiceHostFactory
    {
        protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
        {
              CustomHost customServiceHost =
                new CustomHost(serviceType, baseAddresses[1]);
            return customServiceHost;
        }
    }

    class CustomHost : ServiceHost
    {
        public CustomHost(Type serviceType, params Uri[] baseAddresses)
            : base(serviceType, baseAddresses)
        { }
        protected override void ApplyConfiguration()
        {
            base.ApplyConfiguration();
        }
    }

In my case I decided to pass through baseAddresses[1] (which was the www. address) but it would probably be wise to specify that address you want to prevent changes by your web host from impacting your code.

For more information about Silverlight WCF RIA hosting, please visit our site at ASPHostPortal.com. Cheers!! Good luck.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.

This blog posts shows a step-by-step instruction how to integrate the Unity 2.0 dependency injection container in an ASP.NET MVC 3 web application.

Create MVC 3 project and add Unity 2.0

Create a new "ASP.NET MVC 3 Web Application" project in Visual Studio 2010. For simplicity, we will use the project template "Internet Application", which adds some some sample controllers and views to the project.

Download Unity 2.0 here from MSDN and run the setup. By default, the setup will extract all Unity files to C:\Program Files (x86)\Microsoft Unity Application Block 2.0\. Copy all dll files from the subfolder bin into your ASP.NET MVC 3 project. It is recommended to save them in a new subfolder (for example "libs") in your project. In detail, the project should now contain the following the dll files:

- Microsoft.Practices.ServiceLocation.dll
- Microsoft.Practices.Unity.Configuration.dll
- Microsoft.Practices.Unity.dll
- Microsoft.Practices.Unity.Interception.Configuration.dll
- Microsoft.Practices.Unity.Interception.dll

In the Solution Explorer, right click on "References" and click on "Add Reference..." and select these five dll files in the tab "Browse" to reference the libraries in your project

Register MVC 3 DependencyResolver

To use the Unity dependency injection container in the newly created ASP.NET MVC 3 project we first need an adapter class, that implements the interface IDependencyResolver and maps the method calls to a concrete Unity dependency injection container (an instance of IUnityContainer, see this post):

public class UnityDependencyResolver : IDependencyResolver
{
  readonly IUnityContainer _container;
  public UnityDependencyResolver(IUnityContainer container)
  {
    this._container = container;
  }
  public object GetService(Type serviceType)
  {
    try
    {
      return _container.Resolve(serviceType);
    }
    catch
    {
      return null;
    }
  }
  public IEnumerable<object>GetServices(Type serviceType)
  {
    try
    {
      return _container.ResolveAll(serviceType);
    }
    catch
    {
      return new List<object>();
    }
  }
}

In the Global.asax.cs file we will set up a Unity dependency injection container in the Application_Start method and use our little adapter class to register the Unity container as the service locator for the ASP.NET MVC application.

protected void Application_Start()
{
  [...] 

  var container = new UnityContainer();
  container.RegisterType<IMessages, Messages>();
  DependencyResolver.SetResolver(new UnityDependencyResolver(container));
}

In the above code, we also register a type with the container using the RegisterType method (you can find detailed information about configuring the Unity container and in the MSDN library).
In this simplified example, we just register the type IMessages with the concrete implementation Messages. The next section shows how this type is implemented and used.

Resolving dependencies

To test the dependency resolving, we modify the HomeController.cs and add a new property Messages which is annotated with the Dependency attribute and use this property in the Index action:

public class HomeController : Controller { 

  [Dependency]
  public IMessages Messages { get; set; } 

  public ActionResult Index()
  {
    ViewBag.Message = Messages.Welcome;
    return View();
   } 

  [...]
}

Of course, before we can build our ASP.NET application we need to implement the IMessages interface and Messages class:

public interface IMessages
{
  String Welcome { get; }
} 

public class Messages : IMessages
{
  string IMessages.Welcome
  {
    get { return "Hello world from Unity 2.0!"; }
  }
}

After building and starting the application the Unity dependency injection container should resolve the dependency that is defined in the HomeController and the application's start page should say "Hello world from Unity 2.0!".

I hope you can enjoy this tutorial. If you’re looking for ASP.NET MVC 3 hosting, you can visit our site at http://asphostportal.com/Cheap-ASPNET-MVC-3-Hosting.aspx.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.

Microsoft's Visual Studio Live! is a developer's conference that is all about development in the Visual Studio environment. Visual Studio Live! Orlando was held at the Hilton Walt Disney World Resort in November 2010. One of the big announcements from this conference was the launch date for Visual Studio LightSwitch. And what now you can get this visual studio lightswitch hosting at ASPHostPortal.com. This article contains brief information about the benefit and the useful of Visual Studio LightSwitch.

Visual Studio LightSwitch is a rapid development environment that gives technical and somewhat technical people the ability to create lightweight, line-of-business applications. While many developers don't think Visual Studio LightSwitch will be useful for creating applications, I think it can be very beneficial to use in the right circumstances. Here are some reasons why.

Right-sized versus enterprise-ready

In recent years there has been a growing philosophy that everything needs to be enterprise-ready. The prevailing thought is that all solutions need to be scalable, flexible, "anything-able." While that is true for anything that really does need to be enterprise-ready, there are situations where enterprise-ready is too much.

Imagine you are a small startup. You are not focused on enterprise-ready. You are focused on getting through your first year. Alternately, you might be an established organization that is considering getting into a new line of business. Focusing on getting something up and running to let your employees share information in a cost-effective way would ensure that you are not risking valuable resources (that is, capital). In today's economy, capital budgets are limited (and nonexistent in some companies).

The best of both worlds

Traditionally, we have seen tools such as Access, Excel and, more recently, SharePoint, act as a useful starting point for a low-cost prototype. The best thing that can be said of those initial forays in developing line-of-business applications is that usually all of the necessary data points have been identified and there is a working prototype. I find that having a working prototype is immeasurably helpful when starting an enterprise application development effort.

While Access and Excel solutions do provide value when moving to the next level of maturation, Visual Studio LightSwitch can provide even more. Since Visual Studio LightSwitch can connect to Microsoft SQL Server or Oracle databases, the application can utilize either of those databases during the initial development.

Visual Studio LightSwitch also generates an ADO.Net Entity Framework (EF) class structure that can be used in the next iteration of development. Finally, the interface is rendered to a Microsoft Silverlight application.

Recently, I had a customer request a simple application for generating quotes for customers and tracking them in a Web format. Taking this use case, it was decided to give LightSwitch a go. We were able to build a working prototype for the need within four hours—complete with the database tables, class structure and Microsoft Silverlight interface. Normally, in a traditional Web development environment, this would have taken close to 40 hours to get to the same point.

Efficiency versus maturation

Some people point out that if this right-sized application is successful, that it will need to be rebuilt, usually from the ground up. While this is mostly true, it's relevant to restate that having a working prototype does reduce the risk (risk=time+money) in starting a new application.

So, would it be more efficient to build the enterprise-ready version of the application first? The assumption there is that you are going to get the application right the first time or that the application will be used for a period of time to recover its return on investment. But aren't those two very big assumptions? Furthermore, aren't those two very expensive assumptions?

Also, it's relevant to say that enterprise software endeavors are never guaranteed successes. We all know the high rate of failure for traditional development, whether it is done using an agile or waterfall approach. Approximately 50 percent of all features are either never used or rarely used. Why not develop those features inexpensively first and then decide what needs to be in your final application? These are the types of benefits Microsoft's Visual Studio LightSwitch can provide, making it something to consider moving forward.

Reasons why you must trust ASPHostPortal.com

Every provider will tell you how they treat their support, uptime, expertise, guarantees, etc., are. Take a close look. What they’re really offering you is nothing close to what ASPHostPortal does. You will be treated with respect and provided the courtesy and service you would expect from a world-class web hosting business.

You’ll have highly trained, skilled professional technical support people ready, willing, and wanting to help you 24 hours a day. Your web hosting account servers are monitored from three monitoring points, with two alert points, every minute, 24 hours a day, 7 days a week, 365 days a year. The followings are the list of other added- benefits you can find when hosting with us:

- DELL Hardware
Dell hardware is engineered to keep critical enterprise applications running around the clock with clustered solutions fully tested and certified by Dell and other leading operating system and application providers.
- Recovery Systems
Recovery becomes easy and seamless with our fully managed backup services. We monitor your server to ensure your data is properly backed up and recoverable so when the time comes, you can easily repair or recover your data.
- Control Panel
We provide one of the most comprehensive customer control panels available. Providing maximum control and ease of use, our Control Panel serves as the central management point for your ASPHostPortal account. You’ll use a flexible, powerful hosting control panel that will give you direct control over your web hosting account. Our control panel and systems configuration is fully automated and this means your settings are configured automatically and instantly.
- Excellent Expertise in Technology
The reason we can provide you with a great amount of power, flexibility, and simplicity at such a discounted price is due to incredible efficiencies within our business. We have not just been providing hosting for many clients for years, we have also been researching, developing, and innovating every aspect of our operations, systems, procedures, strategy, management, and teams. Our operations are based on a continual improvement program where we review thousands of systems, operational and management metrics in real-time, to fine-tune every aspect of our operation and activities. We continually train and retrain all people in our teams. We provide all people in our teams with the time, space, and inspiration to research, understand, and explore the Internet in search of greater knowledge. We do this while providing you with the best hosting services for the lowest possible price.
- Data Center
ASPHostPortal modular Tier-3 data center was specifically designed to be a world-class web hosting facility totally dedicated to uncompromised performance and security
- Monitoring Services
From the moment your server is connected to our network it is monitored for connectivity, disk, memory and CPU utilization – as well as hardware failures. Our engineers are alerted to potential issues before they become critical.
- Network
ASPHostPortal has architected its network like no other hosting company. Every facet of our network infrastructure scales to gigabit speeds with no single point of failure.
- Security
Network security and the security of your server are ASPHostPortal’s top priorities. Our security team is constantly monitoring the entire network for unusual or suspicious behavior so that when it is detected we can address the issue before our network or your server is affected.
- Support Services
Engineers staff our data center 24 hours a day, 7 days a week, 365 days a year to manage the network infrastructure and oversee top-of-the-line servers that host our clients’ critical sites and services.