public ActionResult Edit(int id)
{
StudentDetailsVM model = new StudentDetailsVM();
model.countries = studentBL.GetAllCountries();
Student std = studentBL.GetStudentByID(id);
model.CountryID = std.CountryID;
model.FullName = std.FullName;
model.StudentID = std.StudentID;
model.Picture = std.Picture;
model.RegisterationDate = std.RegisterationDate;
return(View(model));
}