how to set default value for dropdown in mvc

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C#

ASP.NET

MVC

entity-framework

hi to all,
Here i done how to set default value as per(Brent Jenkins) ideas and tricks.thanks for that. Now i want to set default values for drop down for country

DESCRIPTION:
Here there r so many countries but i want india is default country
Here my code:-
IN Entities model

[Required]

       public int Country_Id { get; set; }

IN controller:-

List<SelectListItem> list = new List<SelectListItem>();
            list.Add(new SelectListItem { Text = "Select Country", Value = "Select Country" });//set default text for DropdownList
            var cat = (from c in db.Country select c).ToArray();//get data from database using linq
            for (int i = 0; i < cat.Length; i++)
            {
                list.Add(new SelectListItem { Text = cat[i].Country_Name, Value = cat[i].Country_Id.ToString() });
            }
            ViewData["ViewCountry"] = list;

How to set default value in entities model.CAn you explain me detail