public class CalendarGcNumberCellType : CalendarFieldsEditorCell 

using System;
using System.Windows.Forms;
using System.Drawing;
using GrapeCity.Win.CalendarGrid.InputMan;
using GrapeCity.Win.CalendarGrid;

namespace CalendarGridSampleCode
{
    class GcNumberCellDemo : Form
    {
        private GcCalendarGrid gcCalendarGrid1 = new GcCalendarGrid();
        private Label label = new Label();

        public GcNumberCellDemo()
        {
            this.Text = "GcNumberCell Demo";
            this.Size = new Size(350, 300);

            // Add GcCalendarGrid to form
            this.gcCalendarGrid1.Dock = DockStyle.Fill;
            this.Controls.Add(this.gcCalendarGrid1);

            this.label.Dock = DockStyle.Bottom;
            this.label.Height = 50;
            this.label.BackColor = SystemColors.Info;
            this.label.Text = "Enter edit mode, click the SpinButton to modify the each field value; exit the edit mode, only the integral part will display.";
            this.Controls.Add(label);

            this.Load += Form1_Load;

            this.StartPosition = FormStartPosition.CenterScreen;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            CalendarGcNumberCellType gcNumberCell1 = new CalendarGcNumberCellType();
            SetGcNumberCellDisplayFields(gcNumberCell1);
            SetShortcutsAndSideButtons(gcNumberCell1);

            CalendarTemplate template1 = CalendarTemplate.CreateDefaultTemplate();
            template1.Content[1, 0].CellType = gcNumberCell1;
            template1.Content[2, 0].CellType = gcNumberCell1.Clone();

            gcCalendarGrid1.Template = template1;
        }

        private void SetGcNumberCellDisplayFields(CalendarGcNumberCellType gcNumberCell1)
        {
            gcNumberCell1.DisplayFields.Clear();

            NumberSignDisplayField numberSignDisplayField1 = new NumberSignDisplayField();
            NumberIntegerPartDisplayField numberIntegerPartDisplayField1 = new NumberIntegerPartDisplayField();

            numberIntegerPartDisplayField1.GroupSizes = new int[] { 0 };
            numberIntegerPartDisplayField1.MinDigits = 0;

            gcNumberCell1.DisplayFields.AddRange(new NumberDisplayField[] { numberSignDisplayField1, numberIntegerPartDisplayField1 });
        }

        private void SetShortcutsAndSideButtons(CalendarGcNumberCellType gcNumberCell1)
        {
            gcNumberCell1.SideButtons.Clear();
            gcNumberCell1.SideButtons.Add(new SpinButton());
        }

        [STAThreadAttribute()]
        public static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new GcNumberCellDemo());
        }
    }
}