RadControls RadGridView 显示加载数据时间

<TextBlock x:Name="TextBlock1" Margin="8" HorizontalAlignment="Left" Width="200" />

using IDOSSalesBizLogic;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Shapes;



namespace RadControlsWpfAppTest

{

    /// <summary>

    /// SalesOrder.xaml 的交互逻辑

    /// </summary>

    public partial class SalesOrder : Window

    {

        ReadIDOSSalesData rd = new ReadIDOSSalesData();

        DateTime start;

        public SalesOrder()

        {

            InitializeComponent();

            LoadData();



            radGridView.Sorting += ResetTime;

            radGridView.Grouping += ResetTime;

            radGridView.Filtering += ResetTime;



            ResetTimeAndSubscribeToLayoutUpdated();

        }



        public void LoadData()

        {

            radGridView.ItemsSource = rd.ReadSalesOrder();

        }



        void ResetTime(object sender, EventArgs e)

        {

            ResetTimeAndSubscribeToLayoutUpdated();

        }



        private void ResetTimeAndSubscribeToLayoutUpdated()

        {

            radGridView.LayoutUpdated += radGridView_LayoutUpdated;



            start = DateTime.Now;

        }



        void radGridView_LayoutUpdated(object sender, EventArgs e)

        {

            radGridView.LayoutUpdated -= radGridView_LayoutUpdated;



            TextBlock1.Text = String.Format("Total time to load: {0} ms",

                Math.Round((DateTime.Now - start).TotalMilliseconds));

        }



    }

}