How can I create a database in SQL Server by code first entity framework 6?

I have an ASP.NET MVC project in VS 2012. I want to use Entity Framework 6 code-first. When I create model and db-context file and when I run my project it does not create any database in my SQK Server. I want to know what is wrong?

I want to know how can I create database by code first in my SQL Server not in SQL Server Express or Compact. How can I create it? I try scaffolding too but it dos not work true and does not create any database. Any tips or trick would be welcome

This is my web.config setting :

<connectionStrings>
   <add name="dbRaja" 
        connectionString="Data Source=hp-PC;Initial Catalog=Raja;User ID=sa;Password=123;MultipleActiveResultSets=True;Trusted_Connection=False;Persist Security Info=True"
        providerName="System.Data.SqlClient" />
</connectionStrings> 

and its my datacontext :

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;

namespace Raja1.Models
{
    public class dbRaja : DbContext
    {
        // You can add custom code to this file. Changes will not be overwritten.
        // 
        // If you want Entity Framework to drop and regenerate your database
        // automatically whenever you change your model schema, add the following
        // code to the Application_Start method in your Global.asax file.
        // Note: this will destroy and re-create your database with every model change.
        // 
        // System.Data.Entity.Database.SetInitializer(new System.Data.Entity.DropCreateDatabaseIfModelChanges<Raja1.Models.Raja1Context>());

        public DbSet<Raja1.Models.Spareparts> Spareparts { get; set; }
    }
}