名称“；ChartPlotter；不存在于命名空间“”中；http://research.microsoft.com/D

嗨，我正在使用从codeplex.com/dynamicdatadisplay获得的动态数据显示库。我将副本保存在根目录中，并将对dynamicdatadisplay.DLL文件DLL的引用添加到我的项目中。但是，xaml无法识别ChartPlotter，并表示"名称空间中不存在"ChartPlotter"名称"http://research.microsoft.com/DynamicDataDisplay/1.0".有人知道出了什么问题吗？

XAML:

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d3="http://research.microsoft.com/DynamicDataDisplay/1.0" 
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <d3:ChartPlotter Name="plotter" Margin="10,10,20,10">
            <d3:ChartPlotter.HorizontalAxis>
                <d3:HorizontalDateTimeAxis Name="dateAxis"/>
            </d3:ChartPlotter.HorizontalAxis>
            <d3:ChartPlotter.VerticalAxis>
                <d3:VerticalIntegerAxis Name="countAxis"/>
            </d3:ChartPlotter.VerticalAxis>
            <d3:Header FontFamily="Arial" Content="Bug Information"/>
            <d3:VerticalAxisTitle FontFamily="Arial" Content="Count"/>
            <d3:HorizontalAxisTitle FontFamily="Arial" Content="Date"/>
        </d3:ChartPlotter>
    </Grid>
</Window>

背后的代码

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Media; // Pen
using System.IO;
using Microsoft.Research.DynamicDataDisplay; // Core functionality
using Microsoft.Research.DynamicDataDisplay.DataSources; // EnumerableDataSource
using Microsoft.Research.DynamicDataDisplay.PointMarkers; // CirclePointMarker
namespace WpfApplication3
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            Loaded += new RoutedEventHandler(Window1_Loaded);
        }
        private void Window1_Loaded(object sender, RoutedEventArgs e)
        {
            List<BugInfo> bugInfoList = LoadBugInfo("..''..''BugInfo.txt");
            DateTime[] dates = new DateTime[bugInfoList.Count];
            int[] numberOpen = new int[bugInfoList.Count];
            int[] numberClosed = new int[bugInfoList.Count];
            for (int i = 0; i < bugInfoList.Count; ++i)
            {
                dates[i] = bugInfoList[i].date;
                numberOpen[i] = bugInfoList[i].numberOpen;
                numberClosed[i] = bugInfoList[i].numberClosed;
            }
            var datesDataSource = new EnumerableDataSource<DateTime>(dates);
            datesDataSource.SetXMapping(x => dateAxis.ConvertToDouble(x));
            var numberOpenDataSource = new EnumerableDataSource<int>(numberOpen);
            numberOpenDataSource.SetYMapping(y => y);
            var numberClosedDataSource = new EnumerableDataSource<int>(numberClosed);
            numberClosedDataSource.SetYMapping(y => y);
            CompositeDataSource compositeDataSource1 = new
              CompositeDataSource(datesDataSource, numberOpenDataSource);
            CompositeDataSource compositeDataSource2 = new
              CompositeDataSource(datesDataSource, numberClosedDataSource);
            plotter.AddLineGraph(compositeDataSource1,
              new Pen(Brushes.Blue, 2),
              new CirclePointMarker { Size = 10.0, Fill = Brushes.Red },
              new PenDescription("Number bugs open"));
            plotter.AddLineGraph(compositeDataSource2,
              new Pen(Brushes.Green, 2),
              new TrianglePointMarker
              {
                  Size = 10.0,
                  Pen = new Pen(Brushes.Black, 2.0),
                  Fill = Brushes.GreenYellow
              },
              new PenDescription("Number bugs closed"));
            plotter.Viewport.FitToView();
        } // Window1_Loaded()
        private static List<BugInfo> LoadBugInfo(string fileName)
        {
            var result = new List<BugInfo>();
            FileStream fs = new FileStream(fileName, FileMode.Open);
            StreamReader sr = new StreamReader(fs);
            string line = "";
            while ((line = sr.ReadLine()) != null)
            {
                string[] pieces = line.Split(':');
                DateTime d = DateTime.Parse(pieces[0]);
                int numopen = int.Parse(pieces[1]);
                int numclosed = int.Parse(pieces[2]);
                BugInfo bi = new BugInfo(d, numopen, numclosed);
                result.Add(bi);
            }
            sr.Close();
            fs.Close();
            return result;
        }
    } // class Window1
    public class BugInfo
    {
        public DateTime date;
        public int numberOpen;
        public int numberClosed;
        public BugInfo(DateTime date, int numberOpen, int numberClosed)
        {
            this.date = date;
            this.numberOpen = numberOpen;
            this.numberClosed = numberClosed;
        }
    }
} // ns