public ViewMode ViewMode {get; set;}

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Text;

namespace GrapeCity.Win.MultiRow.SampleCode
{
    public class SelectionDemo : Form
    {
        private GcMultiRow gcMultiRow1 = new GcMultiRow();
        private FlowLayoutPanel panel = new FlowLayoutPanel();

        public SelectionDemo()
        {
            this.Text = "Selection Demo";
            this.Size = new Size(600, 300);

            // Initial flow layout panel and add to form.
            this.panel.Dock = DockStyle.Left;
            this.panel.Size = new Size(280, 200);
            this.panel.FlowDirection = FlowDirection.TopDown;
            this.panel.WrapContents = false;
            this.panel.Padding = new Padding(5);
            this.Controls.Add(panel);

            // Add MultiRow to form
            this.gcMultiRow1.Dock = DockStyle.Left;
            this.gcMultiRow1.Width = 320;
            this.Controls.Add(this.gcMultiRow1);

            this.Load += new EventHandler(Form1_Load);

            InitControls();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            gcMultiRow1.Template = Template.CreateGridTemplate(3);

            gcMultiRow1.RowCount = 10;

            gcMultiRow1.SelectionChanged += new EventHandler(gcMultiRow1_SelectionChanged);
        }

        #region Event Handlers

        void allowMultiSelectCheckBox_CheckedChanged(object sender, EventArgs e)
        {
            // Only can select one cell or row, when MultiSelect property is false.
            this.gcMultiRow1.MultiSelect = allowMultiSelectCheckBox.Checked;
        }

        void allowReverseSelectCheckBox_CheckedChanged(object sender, EventArgs e)
        {
            // When allow reverse select, user can reverse select a cell by mouse click with Ctrl key pressed. 
            this.gcMultiRow1.AllowUserToReverseSelect = allowReverseSelectCheckBox.Checked;
        }

        void allowShiftSelectCheckBox_CheckedChanged(object sender, EventArgs e)
        {
            // When allow shift select, user can select a range by pressing shift key and pressing navigation key or clicking mouse left button.
            this.gcMultiRow1.AllowUserToShiftSelect = allowShiftSelectCheckBox.Checked;
        }

        void switchViewModeComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (switchViewModeComboBox.Text == "Can select cell and row")
            {
                // In default mode, user can select rows and cells.
                this.gcMultiRow1.ViewMode = ViewMode.Default;
            }
            else if (switchViewModeComboBox.Text == "Only can select row")
            {
                // In row mode, user only can select rows.
                this.gcMultiRow1.ViewMode = ViewMode.Row;
            }
            else if (switchViewModeComboBox.Text == "List box like selection")
            {
                // In list box mode, user only can select rows. And selection policy is most like list box control.
                this.gcMultiRow1.ViewMode = ViewMode.ListBox;
            }
            else if (switchViewModeComboBox.Text == "Disable selection")
            {
                // Disable all select ability.
                this.gcMultiRow1.ViewMode = ViewMode.Display;
            }

            // When view mode is ListBox, MultiSelect property and AllowUserReverseSelect property do not take effect.
            allowMultiSelectCheckBox.Enabled = (this.gcMultiRow1.ViewMode != ViewMode.ListBox);
            allowReverseSelectCheckBox.Enabled = (this.gcMultiRow1.ViewMode != ViewMode.ListBox);
        }

        void getSelectionInformationButton_Click(object sender, EventArgs e)
        {
            string info = null;

            // Get a specific cell's selection state.
            info = "First Cell's Selection State: " + gcMultiRow1[0, 0].Selected;

            info += "\r\n\r\n";

            // Get a specific row's selection state.
            info += "First Row's Selection State: " + gcMultiRow1.Rows[0].Selected;

            info += "\r\n\r\n";

            info += "Selected cells List:";

            // Get all selected cell list.
            foreach (Cell cell in this.gcMultiRow1.SelectedCells)
            {
                info += "\r\n";

                info += "RowIndex: " + cell.RowIndex + ", CellIndex: " + cell.CellIndex;
            }

            info += "\r\n\r\n";

            info += ("Selected rows List:");

            // Get all selected row list.
            foreach (Row row in this.gcMultiRow1.SelectedRows)
            {
                info += "\r\n";

                info += "RowIndex: " + row.Index;
            }

            MessageBox.Show(info);
        }

        void gcMultiRow1_SelectionChanged(object sender, EventArgs e)
        {
            this.Text = "Selected cell count: " + this.gcMultiRow1.SelectedCells.Count;
            this.Text += "  Selected row count: " + this.gcMultiRow1.SelectedRows.Count;
        }

        #endregion

        #region Initialize Buttons

        private void InitControls()
        {
            allowMultiSelectCheckBox.CheckState = CheckState.Checked;
            allowMultiSelectCheckBox.CheckedChanged += new EventHandler(allowMultiSelectCheckBox_CheckedChanged);

            allowReverseSelectCheckBox.CheckedChanged += new EventHandler(allowReverseSelectCheckBox_CheckedChanged);
            allowShiftSelectCheckBox.CheckedChanged += new EventHandler(allowShiftSelectCheckBox_CheckedChanged);

            switchViewModeComboBox.Items.Add("Can select cell and row");
            switchViewModeComboBox.Items.Add("Only can select row");
            switchViewModeComboBox.Items.Add("List box like selection");
            switchViewModeComboBox.Items.Add("Disable selection");
            switchViewModeComboBox.Width = 150;
            switchViewModeComboBox.DropDownStyle = ComboBoxStyle.DropDownList;
            switchViewModeComboBox.SelectedIndexChanged += new EventHandler(switchViewModeComboBox_SelectedIndexChanged);

            getSelectionInformationButton.Click += new EventHandler(getSelectionInformationButton_Click);

            AddControl(allowMultiSelectCheckBox, "Allow multi-select");
            AddControl(allowReverseSelectCheckBox, "Allow reverse select when press Ctrl");
            AddControl(allowShiftSelectCheckBox, "Allow select a range when press Shift");
            AddControl(switchViewModeComboBox, "Can select cell and row");
            AddControl(getSelectionInformationButton, "Show selection information");
        }

        private void AddControl(Control button, string text)
        {
            this.panel.Controls.Add(button);
            button.Text = text;
            button.AutoSize = true;
        }

        CheckBox allowMultiSelectCheckBox = new CheckBox();
        CheckBox allowReverseSelectCheckBox = new CheckBox();
        CheckBox allowShiftSelectCheckBox = new CheckBox();
        ComboBox switchViewModeComboBox = new ComboBox();
        Button getSelectionInformationButton = new Button();

        #endregion

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