/// <summary>
        /// called when chunk button is pressed
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ChunkDataButton_Click(object sender, EventArgs e)
        {
            if (dw1 == null || dw2 == null)
            {
                MessageBox.Show("Error: Please load both files", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            int numberOfChunks = 0;
            int length         = 0;

            try
            {
                numberOfChunks = Convert.ToInt32(ChunkSizeBox.Text);
                //we need to see if they are of different lengths
                //if they are the final selection box



                if (dw1.GetFullData().DataEuro.Count == dw2.GetFullData().DataEuro.Count)
                {
                    length = dw1.GetFullData().DataEuro.Count;
                }
                else if (dw1.GetFullData().DataEuro.Count > dw2.GetFullData().DataEuro.Count)
                {
                    length = dw2.GetFullData().DataEuro.Count;
                }
                else if (dw1.GetFullData().DataEuro.Count < dw2.GetFullData().DataEuro.Count)
                {
                    length = dw1.GetFullData().DataEuro.Count;
                }

                int chunkSize = length / numberOfChunks;



                file1.ChunkData(chunkSize, numberOfChunks);
                file2.ChunkData(chunkSize, numberOfChunks);

                chunkSelectionBox.Items.Clear();
                chunkSelectionBox.Items.Add("Full Data");
                for (int i = 1; i <= numberOfChunks; i++)
                {
                    chunkSelectionBox.Items.Add("" + i + "/" + numberOfChunks);
                }
            }
            catch (Exception e1)
            {
                MessageBox.Show("Error: Number of Chunks wrong value" + e1.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="dv">reference to the dataview for this file</param>
        /// <param name="cyMain">refrenec to the main window</param>
        /// <param name="file">file, file 1 or file 2</param>
        public ComparrisonControl(DataViewImproved dv, CyclingMain cyMain, string file)
        {
            InitializeComponent();
            this.dv        = dv;
            this.hrData    = dv.GetFullData();
            this.cyMain    = cyMain;
            unit           = false;
            this.file      = file;
            groupBox1.Text = file;
            chunks         = new List <DateTime[]>();

            data[0] = hrData.DataEuro;
            data[1] = hrData.DataUS;


            UpdateSummaryNoDate();
            FullDataNoDate();

            //just set the data in the view now
        }