private void InitializeCarnet()
        {
            List <MarkModel> note = SqlDataAcces.GetAllMarks(SqlDataAcces.ConnectionString, UserLoged);

            dataGridView1.Columns.Clear();

            DataTable newTable = new DataTable();

            newTable.Columns.Add("Nota", typeof(int));
            newTable.Columns.Add("Data", typeof(DateTime));
            foreach (MarkModel item in note)
            {
                DataRow newRow = newTable.NewRow();
                newRow["Nota"] = item.Nota;
                newRow["Data"] = item.Data;
                newTable.Rows.Add(newRow);
            }
            dataGridView1.DataSource = newTable;
        }
        private void InitializeChart()
        {
            List <MarkModel> note = SqlDataAcces.GetAllMarks(SqlDataAcces.ConnectionString, this.UserLoged);

            note = note.OrderBy(x => x.Data).ToList();

            Series serie = new Series();

            serie.ChartType = SeriesChartType.Line;

            foreach (MarkModel nota in note)
            {
                serie.Points.AddXY(nota.Data, nota.Nota);
            }

            chart1.Series.Clear();
            chart1.Series.Add(serie);

            chart1.Series[0].XValueType = ChartValueType.DateTime;
            chart1.Series[0].Name       = "Nota";
            chart1.ChartAreas[0].AxisX.LabelStyle.Format = "dd.MM.yyyy";
            //chart1.ChartAreas[0].AxisX.Interval = 1;
            chart1.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Days;

            DateTime maxDate = note.Max(x => x.Data);
            DateTime minDate = note.Min(x => x.Data);

            chart1.ChartAreas[0].AxisX.Maximum = maxDate.ToOADate();
            chart1.ChartAreas[0].AxisX.Minimum = minDate.ToOADate();

            Series notaMedie = new Series();

            notaMedie.ChartType = SeriesChartType.Line;

            notaMedie.Points.AddXY(minDate, MarkModel.NotaMedie);
            notaMedie.Points.AddXY(maxDate, MarkModel.NotaMedie);
            chart1.Series.Add(notaMedie);
            chart1.Series[1].Name = "Media clasei";
        }