c# chart缩放,局部放大问题

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="chart1"></param>
        public static void InitChart (System.Windows.Forms.DataVisualization.Charting.Chart chart1)
        {
            //开启缩放功能
            chart1.ChartAreas[0].CursorX.Interval = 0;
            chart1.ChartAreas[0].CursorX.IsUserEnabled = true;
            chart1.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
            chart1.MouseClick += new System.Windows.Forms.MouseEventHandler(chart_MouseClick);
        }
 
        //右键恢复缩放
        static void chart_MouseClick(object sender, MouseEventArgs e)
        {
            Chart chart1 = sender as Chart;
            //右键恢复事件
            if (e.Button == MouseButtons.Right)
            {
                chart1.ChartAreas[0].AxisX.ScaleView.ZoomReset(0);
            }
        }

放大

仅针对x轴（y轴同理）

chartArea1.CursorX.IsUserEnabled = true;
chartArea1.CursorX.IsUserSelectionEnabled = true;

缩小

chart1.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

chart1.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(chart1.ChartAreas[0].AxisX.ScaleView.ViewMinimum);//当前显示范围最小坐标
Console.WriteLine(chart1.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 = chart1.ChartAreas[0];
 
            //表格标题内容
            Title title = new Title();
            title.Font = new System.Drawing.Font("宋体", 12F);
            title.Text = "压机曲线波动分析";
            chart1.Titles.Add(title);
 
            //设置坐标轴标题
            chart1.ChartAreas[0].AxisX.Title = "位 移 / mm ";
            chart1.ChartAreas[0].AxisY.Title = "压  力 / Kg ";
 
            //X,Y轴的最大值最小值
            chart1.ChartAreas[0].AxisX.Minimum = 0;
            chart1.ChartAreas[0].AxisX.Maximum = 100;
            chart1.ChartAreas[0].AxisY.Minimum = 0;
            chart1.ChartAreas[0].AxisY.Maximum = 200;
 
            // 设置X,Y的坐标间距
            chart1.ChartAreas[0].AxisX.Interval = 1;
            chart1.ChartAreas[0].AxisY.Interval = 5;
 
 
            //设置坐标轴标题的字体
            chart1.ChartAreas[0].AxisX.TitleFont = new System.Drawing.Font("宋体", 12F);
            chart1.ChartAreas[0].AxisY.TitleFont = new System.Drawing.Font("宋体", 12F);
 
            //设置坐标轴栅格是否可见
            chart1.ChartAreas[0].AxisX.MajorGrid.Enabled = true;
            chart1.ChartAreas[0].AxisY.MajorGrid.Enabled = true;
 
            //设置网格线  
            chart1.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Gainsboro;   //颜色
            chart1.ChartAreas[0].AxisX.MajorGrid.Interval = 10;                 //网格间隔
            chart1.ChartAreas[0].AxisX.MinorGrid.Interval = 10;
            chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Gainsboro;
            chart1.ChartAreas[0].AxisY.MajorGrid.Interval = 20;
            chart1.ChartAreas[0].AxisY.MinorGrid.Interval = 20;
 
            放大表格
            chart1.ChartAreas[0].AxisX.ScaleView.Zoom(2, 3);
            chart1.ChartAreas[0].AxisX.ScaleView.Zoomable = false;
            chart1.ChartAreas[0].AxisX.ScaleView.Size = 20;
 
             Zoom into the X axis
             Enable range selection and zooming end user interface
            chart1.ChartAreas[0].CursorX.IsUserEnabled = true;
            chart1.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
            chart1.ChartAreas[0].AxisX.ScaleView.Zoomable = true;
 
            //将滚动内嵌到坐标轴中
            chart1.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
            chart1.ChartAreas[0].AxisY.ScrollBar.IsPositionedInside = true;
 
 
 
            #endregion
 
 
            #region 各个曲线参数设置
            //曲线类型
            chart1.Series[0].ChartType = SeriesChartType.Spline;
            chart1.Series[1].ChartType = SeriesChartType.Spline;
            chart1.Series[10].ChartType = SeriesChartType.Spline;
 
            // 曲线 线宽像素
            chart1.Series[0].BorderWidth = 1;
            chart1.Series[1].BorderWidth = 1;
            chart1.Series[10].BorderWidth = 3;
 
            // 曲线的颜色
            chart1.Series[10].Color = System.Drawing.Color.Red;
            chart1.Series[4].Color = System.Drawing.Color.Green;
            chart1.Series[5].Color = System.Drawing.Color.RoyalBlue;
 
            //右上角的曲线名称是否显示
            chart1.Series[0].IsVisibleInLegend = true;
            chart1.Series[1].IsVisibleInLegend = true;
            chart1.Series[10].IsVisibleInLegend = true;
 
            //右上角的曲线名称
 
 
            chart1.Series[0].LegendText = "随机抽取曲线1";
            chart1.Series[1].LegendText = "随机抽取曲线2";
            chart1.Series[2].LegendText = "随机抽取曲线3";
            chart1.Series[3].LegendText = "随机抽取曲线4";
            chart1.Series[4].LegendText = "随机抽取曲线5";
            chart1.Series[5].LegendText = "随机抽取曲线6";
            chart1.Series[6].LegendText = "随机抽取曲线7";
            chart1.Series[7].LegendText = "随机抽取曲线8";
            chart1.Series[8].LegendText = "随机抽取曲线9";
            chart1.Series[9].LegendText = "随机抽取曲线10";
            chart1.Series[10].LegendText = "Average";
 
            //名称的悬浮备注
            chart1.Series[10].LegendToolTip = "此乃10个随机曲线的平均值曲线";
            chart1.Series[0].LegendToolTip = "随机抽取曲线1备注";
            chart1.Series[1].LegendToolTip = "备注2";
 
            //坐标Y值是否显示在图表中
            //chart1.Series[0].IsValueShownAsLabel = true;
            //chart1.Series[1].IsValueShownAsLabel = true;
            //chart1.Series[2].IsValueShownAsLabel = true;
            //chart1.Series[3].IsValueShownAsLabel = true;
            //chart1.Series[4].IsValueShownAsLabel = true;
            chart1.Series[10].IsValueShownAsLabel = true;
 
            //chart1.Series.Clear();     使表格GGG
            //chart1.Series.Dispose();
            #endregion

  //设置网格线
            chartDemo1.ChartAreas[0].AxisX.MajorGrid.LineColor = Color.Gray;
            chartDemo1.ChartAreas[0].AxisX.MajorGrid.Interval = 500;//网格间隔
            chartDemo1.ChartAreas[0].AxisX.MinorGrid.Interval = 500;
            chartDemo1.ChartAreas[0].AxisX.MajorGrid.LineDashStyle = ChartDashStyle.Dash; //设置网格类型为虚线
            chartDemo1.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.Gray;
            chartDemo1.ChartAreas[0].AxisY.MajorGrid.Interval = 4;
            chartDemo1.ChartAreas[0].AxisY.MinorGrid.Interval = 4;
            chartDemo1.ChartAreas[0].AxisY.MajorGrid.LineDashStyle = ChartDashStyle.Dash;//网格Y轴线类型
            this.chartDemo1.ChartAreas[0].AxisX.MajorGrid.LineColor = System.Drawing.Color.Transparent;
        　　　　//    this.chartDemo1.ChartAreas[0].AxisY.MajorGrid.LineColor = System.Drawing.Color.Transparent;

//滑轮设置  
 chartDemo1.ChartAreas[0].AxisX.LabelStyle.Format = "HH:mm:ss";　
            chartDemo1.ChartAreas[0].AxisX.ScaleView.Size = 8;
            chartDemo1.ChartAreas[0].AxisX.ScrollBar.IsPositionedInside = true;
            chartDemo1.ChartAreas[0].AxisX.ScrollBar.Enabled = true;

   private void chart1_MouseEnter(object sender, MouseEventArgs e)
        {
            if (e.Delta > 0)//鼠标向上
            {
                if (chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Size < 100)//判断显示的最大数值
                {
                    // chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Size += 2;//+=5---滚动一次显示5个
                    chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Position += 2;
                }
            }
            else//鼠标向下滚动
            {
                if (chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Size > 1)
                {
                    // chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Size -= 2;// - = 5---滚动一次减小显示5个
                    chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Position -= 2;
                }
              
            }
        }
        private void chart1_MouseEnter(object sender, EventArgs e)//当鼠标移动到控件上-发生的事件
        {
            MouseWheel += new MouseEventHandler(chart1_MouseEnter);//调用滚轮事件
        }

总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持自由互联。