WPF调用系统自带的Winform Chart控件绘图_xmlns:wfi ="clr-namespace:system.windows.forms.int

最近在研究WPF，需要用到类似Chart的控件来绘制折线图，横坐标自定义时间信息。先后研究了DynamicDataDisplay.ChartPlotter、Toolkit，因为WPF用的人太少了，这方面可以查到的资料太少了。DynamicDataDisplay.ChartPlotter虽然能实现横坐标显示时间，但是我想显示的是历史的时间信息，非当下时间，遂弃之。如果有知道的大神，可以提点下我怎么改。

以上种种，导致我想用熟悉的Winform下的Chart来绘制。

1.首先添加引用

System.Windows.Forms.dll

WindowsFormsIntegration.dll

System.Windows.Forms.DataVisualization.dll

2.xaml添加命名空间

xmlns:wfi="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
xmlns:Chr="clr-namespace:System.Windows.Forms.DataVisualization.Charting;assembly=System.Windows.Forms.DataVisualization"
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3.WPF是不可以直接引用WinForm Chart，但可以托管在WindowsFormsHost中使用，所以我们要添加一个宿主容器。

  <WindowsFormsHost x:Name="WFHost_HistoryFlow" Margin="1">
     <Chr:Chart x:Name="Chart_HistoryFlow" GetToolTipText="Chart_HistoryFlow_GetToolTipText" BackColor="WhiteSmoke" MouseWheel="Chart_HistoryFlow_MouseWheel"/>
 </WindowsFormsHost>
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4.后台代码.cs添加命名空间

using System.Windows.Forms; using
System.Windows.Forms.DataVisualization.Charting;

5.后台代码

5.1私有变量

   DataTable dataTable = new DataTable();
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5.2 初始化

    /// <summary>
    /// 設定Chart Control
    /// </summary>
    private void SetChart()
    {
        ChartArea ca = new ChartArea("ChartArea1");
        this.Chart_HistoryFlow.ChartAreas.Add(ca);
        ChartArea ca_Pres = new ChartArea("ChartArea1");
        this.Chart_HistoryPres.ChartAreas.Add(ca_Pres);
        ChartArea ca_Ratio = new ChartArea("ChartArea1");
        this.Chart_HistoryRatio.ChartAreas.Add(ca_Ratio);

        //Processor
        System.Windows.Forms.DataVisualization.Charting.Legend lgFlow = new System.Windows.Forms.DataVisualization.Charting.Legend("Legend1");
        lgFlow.IsTextAutoFit = true;
        lgFlow.Docking = Docking.Top;
        this.Chart_HistoryFlow.Legends.Add(lgFlow);

        System.Windows.Forms.DataVisualization.Charting.Legend lgPres = new System.Windows.Forms.DataVisualization.Charting.Legend("Legend1");
        lgPres.IsTextAutoFit = true;
        lgPres.Docking = Docking.Top;
        this.Chart_HistoryPres.Legends.Add(lgPres);

        System.Windows.Forms.DataVisualization.Charting.Legend lgRatio = new System.Windows.Forms.DataVisualization.Charting.Legend("Legend1");
        lgRatio.IsTextAutoFit = true;
        lgRatio.Docking = Docking.Top;
        this.Chart_HistoryRatio.Legends.Add(lgRatio);

        SetChartAutoBar(Chart_HistoryFlow);
        SetChartAutoBar(Chart_HistoryPres);
        SetChartAutoBar(Chart_HistoryRatio);
    }

    /// <summary>
    /// 设置折线图游标
    /// </summary>
    private void SetChartAutoBar(Chart chart)
    {
        //设置游标
        chart.ChartAreas[0].CursorX.IsUserEnabled = true;
        chart.ChartAreas[0].CursorX.AutoScroll = true;
        chart.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
        //设置X轴是否可以缩放
        chart.ChartAreas[0].AxisX.ScaleView.Zoomable = true;

        //将滚动内嵌到坐标轴中
        chart.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
        // 设置滚动条的大小
        chart.ChartAreas[0].AxisX.ScrollBar.Size = 10;
        // 设置滚动条的按钮的风格，下面代码是将所有滚动条上的按钮都显示出来
        chart.ChartAreas[0].AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.All;
        // 设置自动放大与缩小的最小量
        chart.ChartAreas[0].AxisX.ScaleView.SmallScrollSize = double.NaN;
        chart.ChartAreas[0].AxisX.ScaleView.SmallScrollMinSize = 1;
    }    
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5.3 事件

    /// <summary>
    /// 历史流量折线图鼠标滚动 滚动条对应滑动 最小及最大数据位置停止
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void Chart_HistoryFlow_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)
    {

        //按住Ctrl，缩放
        if ((System.Windows.Forms.Control.ModifierKeys & Keys.Control) == Keys.Control)
        {
            if (e.Delta < 0)
                Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Size += 4;
            else
                Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Size -= 4;
        }
        //不按Ctrl，滚动
        else
        {
            if (e.Delta < 0)
            {
                //当前位置+视图长大于最大数据时停止
                if (Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Position + Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Size < Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.ViewMaximum)
                    Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Position += 4;
            }
            else
            {
                //当前位置小于最小数据时停止
                if (Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Position > Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.ViewMinimum)
                    Chart_HistoryFlow.ChartAreas[0].AxisX.ScaleView.Position -= 4;
            }

        }
    }

    /// <summary>
    /// 流量脉冲折线图光标显示详细数据
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void Chart_HistoryFlow_GetToolTipText(object sender, System.Windows.Forms.DataVisualization.Charting.ToolTipEventArgs e)
    {
        if (e.HitTestResult.ChartElementType == ChartElementType.DataPoint)
        {
            this.Cursor = System.Windows.Input.Cursors.Cross;
            int i = e.HitTestResult.PointIndex;
            string time = this.dataTable.Rows[i]["时间"].ToString();
            string aFlow = this.dataTable.Rows[i]["A脉冲"].ToString();
            string bFlow = this.dataTable.Rows[i]["B脉冲"].ToString();
            string aPressure = this.dataTable.Rows[i]["A压力"].ToString();
            string bPressure = this.dataTable.Rows[i]["B压力"].ToString();
            string abRatio = this.dataTable.Rows[i]["AB比率"].ToString();
            e.Text = $"时  间：{time}\r\nA脉冲：{aFlow}\r\nB脉冲：{bFlow}\r\nA压力：{aPressure}\r\nB压力：{bPressure}\r\nAB比率：{abRatio}";
        }
        else
        {
            this.Cursor = System.Windows.Input.Cursors.Arrow;
        }
    }
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5.4 往Chart中写入数据

    /// <summary>
    /// DataTable数据写入Chart中
    /// </summary>
    /// <param name="dataTable">包含数据的DataTable</param>
    /// <param name="chart">待写入数据的Chart</param>
    public void DataTableToChart(DataTable dataTable, Chart chart,string title, string series1, string series2)
    {
        chart.Series.Clear();   //清空图表中的内容
        chart.Titles.Clear();
        chart.Titles.Add(title);//添加标题
        chart.DataSource = dataTable;

        Series aCodeSeries = chart.Series.Add(series1);//添加第一个表
        aCodeSeries.ChartType = SeriesChartType.Line;//设为折线图显示
        aCodeSeries.YValueMembers = series1;//y轴为数据
        aCodeSeries.XValueMember = "时间";
        Series bCodeSeries = chart.Series.Add(series2);//添加第二个表
        bCodeSeries.ChartType = SeriesChartType.Line;//设为折线图显示
        bCodeSeries.YValueMembers = series2;
    }
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往DataTable中写点数据，我的列名为"时间"，“A脉冲”，“B脉冲”，“A压力”，“B压力”，“AB比率”。

5.5显示效果

原文链接：https://www.cnblogs.com/stackmiao/p/11463284.html