Creating a Web Service in Cloud

Let's create our first web service in the cloud. The service will return the factorial of a number. Just like our Hello World ASP.NET application, we will create a new Cloud Service project but this time with no Role. Once the project is created, create a new ASP.NET Web Service Application project and add it as a Web Role in the Cloud Service project. Just add the following methods to it.

[WebMethod]
public double GetFactorial(int x)
{
       double factorial = 0;
       if (x >= 0)
       {
               factorial = CalcFactorial(x);
       }

       return factorial;
}

privat static double CalcFactorial (int x)
{
       // base case
       if (x <= 1)
       {
               return 1;
       }

       return x * CalcFactorial (x -1);
}

Now, press F5 and you will get the following.

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