protected void Page_Load(object sender, EventArgs e)
        {
            IEnumerable <AllStudents> allStudents = AllStudents.GetAllStudents().Where(students => students.StudentGender == "Male");

            GridView3.DataSource = allStudents;
            GridView3.DataBind();
        }
        public static List <AllStudents> GetAllStudents()
        {
            List <AllStudents> allStudents = new List <AllStudents>();

            AllStudents allStudents1 = new AllStudents()
            {
                StudentID     = 1,
                StudentAge    = 12,
                StudentGender = "Male",
                StudentName   = "Samu1"
            };

            allStudents.Add(allStudents1);

            AllStudents allStudents2 = new AllStudents()
            {
                StudentName   = "Samu2",
                StudentID     = 2,
                StudentGender = "Female",
                StudentAge    = 13
            };

            allStudents.Add(allStudents2);

            AllStudents allStudents3 = new AllStudents()
            {
                StudentAge    = 14,
                StudentGender = "Male",
                StudentID     = 5,
                StudentName   = "Samu3"
            };

            allStudents.Add(allStudents3);

            AllStudents allStudents4 = new AllStudents()
            {
                StudentName   = "Samu6",
                StudentID     = 22,
                StudentGender = "Female",
                StudentAge    = 10
            };

            allStudents.Add(allStudents4);

            return(allStudents);
        }