标签：new 需要 ring charting xaml his 放大 winform line
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"
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>
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();
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; }
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; } }
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; }
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
OVER~撒花
标签：new 需要 ring charting xaml his 放大 winform line
原文地址：https://www.cnblogs.com/stackmiao/p/11463284.html
