how to call import function of complex type stored procedure using entityframework

protected void Button1_Click(object sender, EventArgs e)
{
    Student_BL scl = new Student_BL();
   Guid gid = Guid.Parse(TextBox1.Text);
    var y = scl.getstudent(gid);
    GridView1.DataSource = (y.ToList<StudentR>());
    GridView1.DataBind();
}

public class Student_BL
{
    SS1DBEntities2 obj = new Ss1DBEntities2();

    public List<StudentR>  getstudent(Guid gid)
    {
        System.Data.Objects.ObjectParameter Student1 = new       System.Data.Objects.ObjectParameter("studentid",gid);
        var x = obj.Student(Student1);
        return x.ToList<StudentR>();      
     }

public virtual ObjectResult<StudentR> Student(ObjectParameter studentId)
    {
        return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<StudentR>("Student", studentId);
    }

protected void Page_Load(object sender, EventArgs e)
    {
        GridView1.DataSource = EmployeeByCountry("UK");
        GridView1.DataBind();
    }


List<Employees> EmployeeByCountry(string Country)
   {
       List<Employees> EmpListObj = new List<Employees>();
       NORTHWNDEntities NWEObj= new NORTHWNDEntities();
       EmpListObj = NWEObj.EmployeeByCountry(Country).ToList<Employees>();
       return EmpListObj;
   }