/// <summary>
        ///
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.Cursor = Cursors.Wait;

            // Get the work item service
            WorkItemStore store = (WorkItemStore)_tfsProject.ProjectCollection.GetService(typeof(WorkItemStore));

            DateTime startDate = dtpStart.SelectedDate == null ? DateTime.Today : dtpStart.SelectedDate.Value;
            DateTime endDate   = dtpStart.SelectedDate == null ? DateTime.Today : dtpEnd.SelectedDate.Value;

            Data.IterationItem          iteration     = cboIterations.SelectedValue as Data.IterationItem;
            Data.IterationItem[]        allIterations = cboIterations.ItemsSource as Data.IterationItem[];
            Data.WorkItemTimeCollection wi            = new Data.WorkItemTimeCollection(store, allIterations[0].Path, startDate, endDate);

            dgvWorkItems.ItemsSource = wi.ToDataTable(chkChangesOnly.IsChecked == true).DefaultView;

            this.Cursor = null;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            this.Cursor = Cursors.Wait;

            // Get the work item service
            WorkItemStore store = (WorkItemStore)_tfsProject.ProjectCollection.GetService(typeof(WorkItemStore));

            DateTime startDate = dtpStart.SelectedDate == null ? DateTime.Today : dtpStart.SelectedDate.Value;
            DateTime endDate = dtpStart.SelectedDate == null ? DateTime.Today : dtpEnd.SelectedDate.Value;

            Data.IterationItem iteration = cboIterations.SelectedValue as Data.IterationItem;
            Data.IterationItem[] allIterations = cboIterations.ItemsSource as Data.IterationItem[];
            Data.WorkItemTimeCollection wi = new Data.WorkItemTimeCollection(store, allIterations[0].Path, startDate, endDate);

            dgvWorkItems.ItemsSource = wi.ToDataTable(chkChangesOnly.IsChecked == true).DefaultView;

            this.Cursor = null;
        }