"HTTP Error 404.17 - Not Found - The requested content appears to be script and will not be served by the static file handler."

To fix this error change you application pool from default to Classic .NET AppPool
 

Did I write a single line of code for IPhone ? –No
Do I have a coding experience for Mac ? - No 
Do I have IPhone ? – No.
Did I ever use Mac OS? –No

So why I am even looking into IPhone development? Answer is simple more than 3000 apps has been already been written for IPhone and this number is growing faster then byte count in gmail account. So is it so simple to write for IPhone platform? Or we have a lot of success stories flying around about 1$ business model which make people rich in days.

I was answering these question for days and decided to experience all caveats of being IPhone developer who wants to create his killing application. I started thinking about exploring IPhone SDK few months ago, and my killer idea :) about grocery list application came to my mind. I didn’t make any research because of workload and thought that I already earn million of $.As usual in our days I decided to start my journey by googling. After first search I lost my million :(.

Ok it is not the end of the world and I decided to prepare to my IPhone development journey.
So to make fun out of my project I decided mainly for myself blog about my experience to revisit whole story later to see what challenges I faced. For now I am creating list of future mini posts which will cover my experience with

And by the way preparation is bad start, you need to execute :)

Few days I got a simple question from one of blog readers regarding how to log in powershell .

In order to redirect your output to file you need to execute script and indicate that output source is file

PS C:\> prototypes\logging.ps1 |Out-File C:\prototypes\ps.log

In your script use command Write-Output to write anything to your current output :)

Write-Output "Test"

Recently Microsoft added REST support to WCF services.  So what RESTful service means?

From WIKI:

"A RESTFul web service is a simple web service implemented using HTTP and the principles of REST. Such a web service can be thought about as a collection of resources. The definition of such a web service can be thought of as comprising three aspects:

• The URI for the web service such as http://example.com/resources/cars
• The MIME type of the data supported by the web service. This is often JSON , XML or YAML but can be anything.
• The set of operations supported by the web service using HTTP methods including but not limited to POST, GET, PUT and DELETE.

Members of the collection are addressed by ID using URIs of the form <baseURI>/<ID>. The ID can be any unique identifier. For example if a RESTFul web service representing a collection of cars for sale might have the URI http://example.com/resources/cars. If the service uses the car registration number as the ID then a particular car might be present in the collection as http://example.com/resources/cars/yxz123. "

In order to build simple REST service in Visual Studio you need to perform following steps:

Create new WCF service using "Add New Item" menu from solution explorer

I am going to have a service which will fetch all child records for selected record. Very common scenario for CRUD applications. IN VS2008 I am clicking on 'Add New Item' and Selecting WCF service. 

The system generate 3 files:

FetchChildItems.svc, this file contains a information what code should be executed by WCF when request is processed by IIS

<%@ ServiceHost Language="C#" Debug="true" Service="FetchChildItems" CodeBehind="~/App_Code/FetchChildItems.cs" %>

IFetchChildItems.cs contains your interface definitions:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.Text;

// NOTE: If you change the interface name "IFetchChildItems" here, you must also update the reference to "IFetchChildItems" in Web.config.

[ServiceContract]

public interface IFetchChildItems

{

    [OperationContract]

    void DoWork();

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.Text;

// NOTE: If you change the class name "FetchChildItems" here, you must also update the reference to "FetchChildItems" in Web.config.

public class FetchChildItems : IFetchChildItems

{

    public void DoWork()

    {

    }

}

Implementing a service and instructing it to return XML,JSON output

Next step you need to do is actually instruct your service to return your defined types in JSON or XML format.

In svc file you need to define what factory is processing WCF service request: 

<%@ ServiceHost Language="C#" Debug="true" Service="FetchChildItems" CodeBehind="~/App_Code/FetchChildItems.cs" Factory="System.ServiceModel.Activation.WebServiceHostFactory"%>

WebServiceHostFactory factory that provides instances of WebServiceHost in managed hosting environments where the host instance is created dynamically in response to incoming messages.

In IFetchChildItems.cs you need to specify that service will be executed when consumer calls web url  endpoint. In order to do it you need to specify custom attribute WebInvoke (System.ServiceModel.Web namespace )

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.Text;

using System.ServiceModel.Web;

// NOTE: If you change the interface name "IFetchChildItems" here, you must also update the reference to "IFetchChildItems" in Web.config.

[ServiceContract]

public interface IFetchChildItems

{

    [OperationContract]

    [WebInvoke(

        Method = "GET",

        ResponseFormat = WebMessageFormat,

        BodyStyle = WebMessageBodyStyle.Wrapped,

        UriTemplate = "{ID}/{Filter}")

        ]

    void DoWork(int ID, string Filter);

}

WebMessageFormat ResponseFormat is telling in what output type service will return response and it can be Json or Xml.
WebMessageBodyStyle BodyStyle is giving you ability to specify how your service response will be formatted
UriTemplate  allows you define your REST contract, WCF automatically extracts defined variables from URL and passing it values as parameters to service method

Defining Endpoint for REST WCF service in web.config

First you need to enable ASP.NET Compatibility Mode in serviceHostingEnvironment section:

<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />

<service name="FetchChildItems">

    <endpoint address="" 

              binding="webHttpBinding" 

              behaviorConfiguration="FetchChildItemsBehavior" 

              contract="IFetchChildItems"

    />

Please note that binding attribute is set to binding="webHttpBinding"

Behavior should include webHttp element

<behaviors>

            <endpointBehaviors>

                <behavior name="FetchChildItemsBehavior">

                    <webHttp />

                </behavior>

            </endpointBehaviors>            

        </behaviors>