c# chart缩放,局部放大问题

.NET
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2023-08-20
标签   C#
目录
  • c# chart缩放,局部放大
  • 放大
  • 缩小
  • c# chart表格
  • 设置间隔与小数点
  • 网格刻度
  • 总结

c# chart缩放,局部放大

效果:

左键划选放大区域,右键恢复

/// <summary>
/// 初始化,传入要进行初始化的chart
/// </summary>
/// <param name="chart"></param>
public static void InitChart (System.Windows.Forms.DataVisualization.Charting.Chart chart)
{
    //开启缩放功能
    chart.ChartAreas[0].CursorX.Interval = 0;
    chart.ChartAreas[0].CursorX.IsUserEnabled = true;
    chart.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
    chart.MouseClick += new System.Windows.Forms.MouseEventHandler(chart_MouseClick);
}

//右键恢复缩放
static void chart_MouseClick(object sender, MouseEventArgs e)
{
    Chart chart = sender as Chart;
    //右键恢复事件
    if (e.Button == MouseButtons.Right)
    {
        chart.ChartAreas[0].AxisX.ScaleView.ZoomReset(0);
    }
}

放大

仅针对x轴(y轴同理)

chartArea.CursorX.IsUserEnabled = true;
chartArea.CursorX.IsUserSelectionEnabled = true;

缩小

chart.ChartAreas[0].AxisX.ScaleView.ZoomReset();
  • ZoomReset(0); —— 撤销所有放大动作
  • ZoomReset(1); —— 撤销上一次放大动作

设置滚动条宽度

chart.ChartAreas[0].AxisX.ScrollBar.Size = 5;

以上所有方法也可以在chart属性里直接进行设置

获取选区坐标

Console.WriteLine(chart.ChartAreas[0].AxisX.ScaleView.ViewMinimum);//当前显示范围最小坐标
Console.WriteLine(chart.ChartAreas[0].AxisX.ScaleView.ViewMaximum);//当前显示范围最大坐标

c# chart表格

  • series1属性中XAxisType属性值设置为:Primary
  • series2属性中XAxisType属性值设置为:Secondary      

添加series会导致图表预览不可用

设置间隔与小数点

网格刻度

 #region 表格参数设置
//ChartArea chartArea = chart.ChartAreas[0];
 
//表格标题内容
Title title = new Title();
title.Font = new System.Drawing.Font("宋体",F);
title.Text = "压机曲线波动分析";
chart.Titles.Add(title);
 
//设置坐标轴标题
chart.ChartAreas[0].AxisX.Title = "位 移 / mm ";
chart.ChartAreas[0].AxisY.Title = "压  力 / Kg ";
 
//X,Y轴的最大值最小值
chart.ChartAreas[0].AxisX.Minimum = 0;
chart.ChartAreas[0].AxisX.Maximum = 100;
chart.ChartAreas[0].AxisY.Minimum = 0;
chart.ChartAreas[0].AxisY.Maximum = 200;
 
// 设置X,Y的坐标间距
chart.ChartAreas[0].AxisX.Interval = 1;
chart.ChartAreas[0].AxisY.Interval = 5;
 
 
//设置坐标轴标题的字体
chart.ChartAreas[0].AxisX.TitleFont = new System.Drawing.Font("宋体", 12F);
chart.ChartAreas[0].AxisY.TitleFont = new System.Drawing.Font("宋体", 12F);
 
//设置坐标轴栅格是否可见
chart.ChartAreas[0].AxisX.MajorGrid.Enabled = true;
chart.ChartAreas[0].AxisY.MajorGrid.Enabled = true;
 
//设置网格线  
chart.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Gainsboro;   //颜色
chart.ChartAreas[0].AxisX.MajorGrid.Interval = 10;                 //网格间隔
chart.ChartAreas[0].AxisX.MinorGrid.Interval = 10;
chart.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Gainsboro;
chart.ChartAreas[0].AxisY.MajorGrid.Interval = 20;
chart.ChartAreas[0].AxisY.MinorGrid.Interval = 20;
 
放大表格
chart.ChartAreas[0].AxisX.ScaleView.Zoom(2, 3);
chart.ChartAreas[0].AxisX.ScaleView.Zoomable = false;
chart.ChartAreas[0].AxisX.ScaleView.Size = 20;
 
 Zoom into the X axis
 Enable range selection and zooming end user interface
chart.ChartAreas[0].CursorX.IsUserEnabled = true;
chart.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
chart.ChartAreas[0].AxisX.ScaleView.Zoomable = true;
 
//将滚动内嵌到坐标轴中
chart.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
chart.ChartAreas[0].AxisY.ScrollBar.IsPositionedInside = true;
 
 
 
#endregion
 
 
#region 各个曲线参数设置
//曲线类型
chart.Series[0].ChartType = SeriesChartType.Spline;
chart.Series[1].ChartType = SeriesChartType.Spline;
chart.Series[10].ChartType = SeriesChartType.Spline;
 
// 曲线 线宽像素
chart.Series[0].BorderWidth = 1;
chart.Series[1].BorderWidth = 1;
chart.Series[10].BorderWidth = 3;
 
// 曲线的颜色
chart.Series[10].Color = System.Drawing.Color.Red;
chart.Series[4].Color = System.Drawing.Color.Green;
chart.Series[5].Color = System.Drawing.Color.RoyalBlue;
 
//右上角的曲线名称是否显示
chart.Series[0].IsVisibleInLegend = true;
chart.Series[1].IsVisibleInLegend = true;
chart.Series[10].IsVisibleInLegend = true;
 
//右上角的曲线名称
 
 
chart.Series[0].LegendText = "随机抽取曲线1";
chart.Series[1].LegendText = "随机抽取曲线2";
chart.Series[2].LegendText = "随机抽取曲线3";
chart.Series[3].LegendText = "随机抽取曲线4";
chart.Series[4].LegendText = "随机抽取曲线5";
chart.Series[5].LegendText = "随机抽取曲线6";
chart.Series[6].LegendText = "随机抽取曲线7";
chart.Series[7].LegendText = "随机抽取曲线8";
chart.Series[8].LegendText = "随机抽取曲线9";
chart.Series[9].LegendText = "随机抽取曲线10";
chart.Series[10].LegendText = "Average";
 
//名称的悬浮备注
chart.Series[10].LegendToolTip = "此乃10个随机曲线的平均值曲线";
chart.Series[0].LegendToolTip = "随机抽取曲线1备注";
chart.Series[1].LegendToolTip = "备注2";
 
//坐标Y值是否显示在图表中
//chart.Series[0].IsValueShownAsLabel = true;
//chart.Series[1].IsValueShownAsLabel = true;
//chart.Series[2].IsValueShownAsLabel = true;
//chart.Series[3].IsValueShownAsLabel = true;
//chart.Series[4].IsValueShownAsLabel = true;
chart.Series[10].IsValueShownAsLabel = true;
 
//chart.Series.Clear();     使表格GGG
//chart.Series.Dispose();
#endregion
//设置网格线
chartDemo.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.Gray;
chartDemo.ChartAreas[0].AxisX.MajorGrid.Interval = 500;//网格间隔
chartDemo.ChartAreas[0].AxisX.MinorGrid.Interval = 500;
chartDemo.ChartAreas[0].AxisX.MajorGrid.LineDashStyle = ChartDashStyle.Dash; //设置网格类型为虚线
chartDemo.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.Gray;
chartDemo.ChartAreas[0].AxisY.MajorGrid.Interval = 4;
chartDemo.ChartAreas[0].AxisY.MinorGrid.Interval = 4;
chartDemo.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = ChartDashStyle.Dash;//网格Y轴线类型
this.chartDemo.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Transparent;
    //    this.chartDemo.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Transparent;
//滑轮设置  
 chartDemo.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss"; 
chartDemo.ChartAreas[0].AxisX.ScaleView.Size = 8;
chartDemo.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
chartDemo.ChartAreas[0].AxisX.ScrollBar.Enabled = true;
 private void chart_MouseEnter(object sender, MouseEventArgs e)
{
    if (e.Delta >)//鼠标向上
    {
        if (chart.ChartAreas["ChartArea1"].AxisX.ScaleView.Size < 100)//判断显示的最大数值
        {
            // chart.ChartAreas["ChartArea1"].AxisX.ScaleView.Size += 2;//+=5---滚动一次显示5个
            chart.ChartAreas["ChartArea1"].AxisX.ScaleView.Position += 2;
        }
    }
    else//鼠标向下滚动
    {
        if (chart.ChartAreas["ChartArea1"].AxisX.ScaleView.Size > 1)
        {
            // chart.ChartAreas["ChartArea1"].AxisX.ScaleView.Size -= 2;// - = 5---滚动一次减小显示5个
            chart.ChartAreas["ChartArea1"].AxisX.ScaleView.Position -= 2;
        }
      
    }
}
private void chart_MouseEnter(object sender, EventArgs e)//当鼠标移动到控件上-发生的事件
{
    MouseWheel += new MouseEventHandler(chart_MouseEnter);//调用滚轮事件
}