MS Chart with data point click handling

// This code sample shows how to handle clicks in MS chart to show more info.
// In particular here we handle the datapoint click to show the ROW of the datatable
// corresponding to the point.
// How To Run:
// 1 - Create a WinForms project called WinFormTests
// 2 - Dbl click on Form1, add a SplitContainer with Dock = Fill and Orientation = Horizontal
// 3 - Add a MS chart to the top panel of the split container and set Dock = Fill
// 4 - Add a DataGridView to the bottom panel of the splitContainer and set Dock = Fill
// 5 - Open Form1.cs and copy and paste the following code
// 6 - Build and run

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;

namespace WinFormTests
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            // register the hit test event
            this.chart1.MouseClick += new MouseEventHandler(chart1_MouseClick);

            // fill the data table
            DataTable dt = new DataTable();
            dt.Columns.Add("Month No.", typeof(int));
            dt.Columns.Add("Month", typeof(string));
            dt.Columns.Add("Month Description", typeof(string));
            dt.Columns.Add("Value", typeof(double));

            dt.Rows.Add("Jan", "January", 1, 10);
            dt.Rows.Add("Feb", "February", 2, 30);
            dt.Rows.Add("Mar", "March", 3, 50);
            dt.Rows.Add("Apr", "April", 4, 20);
            dt.Rows.Add("May", "May", 5, 40);
            dt.Rows.Add("Jun", "June", 6, 25);
            dt.Rows.Add("Jul", "July", 7, 35);
            dt.Rows.Add("Aug", "August", 8, 70);
            dt.Rows.Add("Sep", "September", 9, 15);
            dt.Rows.Add("Oct", "October", 10, 30);
            dt.Rows.Add("Nov", "November", 11, 5);
            dt.Rows.Add("Dec", "December", 12, 100);

            // bind the data table to chart
            this.chart1.Series.Clear();

            var series = this.chart1.Series.Add("Series 1");
            series.XValueMember = "Month No.";
            series.YValueMembers = "Value";
            series.ChartType = SeriesChartType.Line;
            this.chart1.DataSource = dt;
            this.chart1.DataBind();

            // bint the data table to datagridview
            this.dataGridView1.DataSource = dt;

        }

        void chart1_MouseClick(object sender, MouseEventArgs e)
        {
            var pos = e.Location;
            var results = chart1.HitTest(pos.X, pos.Y, false, ChartElementType.DataPoint);
            foreach (var result in results)
            {
                if (result.ChartElementType == ChartElementType.DataPoint)
                {
                    var point = result.Object as DataPoint;
                    var month = (int)point.XValue;

                    this.dataGridView1.ClearSelection();

                    foreach (DataGridViewRow row in this.dataGridView1.Rows)
                    {
                        if ((int)row.Cells["Month No."].Value == month)
                        {
                            row.Selected = true;
                            break;
                        }
                    }
                }
            }
        }
    }
}