public StudentsForm()
        {
            InitializeComponent();

            table = new DataTable();
            table.Columns.Add("Id");
            table.Columns.Add("Carnet");
            table.Columns.Add("Nombre");
            table.Columns.Add("Apellido");
            table.Columns.Add("Edad");
            table.Columns.Add("Sexo");

            data = new DataEstudiante();
            LoadTable();
        }
        private void btnEliminar_Click(object sender, EventArgs e)
        {
            DataGridViewSelectedRowCollection rows = dgwStudents.SelectedRows;

            DataGridViewRow row     = rows[0];
            Estudiante      student = new Estudiante();

            student.Id = Convert.ToInt32(row.Cells["id"].Value);

            DataEstudiante data = new DataEstudiante();

            data.Eliminar(student.Id);

            LoadTable();
        }