SampleApp.MainForm.dgvClassData_CurrentCellChanged C# (CSharp) Method

        private void dgvClassData_CurrentCellChanged(object sender, EventArgs e)
        {
            if (dgvClassData.CurrentCell != null && dgvClassData.DataSource != null)
            {
                int index = dgvClassData.CurrentCell.ColumnIndex;
                double[,] subset = (double[,])(dgvClassData.DataSource as ArrayDataView).ArrayData;
                dataHistogramView2.DataSource = subset.GetColumn(index);
            }
        }