WInform中实现设置ZedGraph中曲线的X轴与Y轴的上限与下限-蒲公英云

场景

Winforn中设置ZedGraph曲线图的属性、坐标轴属性、刻度属性：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100112573

在上面实现曲线相关属性的设置的基础上，要能修改曲线图的X轴以及Y轴的上限和下限。

效果

实现

设置Y轴的上限

拖拽按钮，双击进入其点击事件

 private void button8_Click(object sender, EventArgs e)
        {
            myPane.YAxis.Scale.Max = 1500;
            //更新图表
            zedGraphControl1.Invalidate();
        }

设置Y轴的下限

拖拽按钮，双击进入其点击事件

 private void button9_Click(object sender, EventArgs e)
        {
            myPane.YAxis.Scale.Min = -1500;
            //更新图表
            zedGraphControl1.Invalidate();
        }

设置X轴的上限

拖拽按钮，双击进入其点击事件

 private void button10_Click(object sender, EventArgs e)
        {
            myPane.XAxis.Scale.Max = 60;
            //更新图表
            zedGraphControl1.Invalidate();
        }

设置X轴的下限

拖拽按钮，双击进入其点击事件

private void button11_Click(object sender, EventArgs e)
        {
            myPane.XAxis.Scale.Min = -5;
            //更新图表
            zedGraphControl1.Invalidate();
        }

完整示例代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using ZedGraph;
namespace ZedGraphTest
{
    public partial class Form1 : Form
    {
        GraphPane myPane = new GraphPane();
        public Form1()
        {
            InitializeComponent();
            //Form1初始化后创建设置控件的方法并将当前ZedGraph控件传递
            createPane(zedGraphControl1);
        }
        //需要引入命名空间--using ZedGraph;
        public void createPane(ZedGraphControl zgc)
        {
            myPane = zgc.GraphPane;
            //设置图表标题 和 x y 轴标题
            myPane.Title.Text = "霸道测试标题";
            myPane.XAxis.Title.Text = "X轴标题";
            myPane.YAxis.Title.Text = "Y轴标题";
            //更改标题的字体
            FontSpec myFont = new FontSpec("Arial",16,Color.Black,false,false,false);
            myPane.XAxis.Title.FontSpec = myFont;
            myPane.YAxis.Title.FontSpec = myFont;
            // 造一些数据，PointPairList里有数据对x，y的数组
            Random y = new Random();
            PointPairList list1 = new PointPairList();
            for (int i = 0; i < 50; i++)
            {
                double x = i;
                double y1 = y.NextDouble() * 1000;
                list1.Add(x, y1); //添加一组数据
            }
            // 用list1生产一条曲线，标注是“曲线1”
            //SymbolType，枚举代表曲线的样式
            //Square = 0,
            //Diamond = 1,
            //Triangle = 2,
            //Circle = 3,
            //XCross = 4,
            //Plus = 5,
            //Star = 6,
            //TriangleDown = 7,
            //HDash = 8,
            //VDash = 9,
            //UserDefined = 10,
            //Default = 11,
            //None = 12,
            LineItem myCurve = myPane.AddCurve("曲线1", list1, Color.Red, SymbolType.None);
            //填充图表颜色
            myPane.Fill = new Fill(Color.White, Color.LightGray, 45.0f);
            //以上生成的图标X轴为数字，下面将转换为日期的文本
            string[] labels = new string[50];
            for (int i = 0; i < 50; i++)
            {
                labels[i] = System.DateTime.Now.AddDays(i).ToShortDateString();
            }
            #region 坐标轴属性设置
            //X轴类型
            myPane.XAxis.Type = AxisType.Text;  
            //显示小刻度 是false则看不到效果
            myPane.XAxis.MinorGrid.IsVisible = true;
            //线的颜色
            myPane.XAxis.Color = Color.Black;
            //点线中点与点之间的间隔
            myPane.XAxis.MinorGrid.DashOff = 1f;
            //点线中点的长度
            myPane.XAxis.MinorGrid.DashOn = 1f;
            //画笔宽度
            myPane.XAxis.MinorGrid.PenWidth = 1f;
            //
            #endregion
            #region 坐标轴上刻度线设置
            //X轴文本取值
            myPane.XAxis.Scale.TextLabels = labels;
            //第一个刻度从哪里开始
            myPane.XAxis.Scale.BaseTic = 1;
            //刻度值的字体属性
            myPane.XAxis.Scale.FontSpec = myFont;
            #endregion
            //画到zedGraphControl1控件中，此句必加
            zgc.AxisChange();//在数据变化时绘图
            //更新图表
            zedGraphControl1.Invalidate();
            //重绘控件
            Refresh();
            #region 属性设置
            //是否允许横向缩放
            this.zedGraphControl1.IsEnableHZoom = true;
            //是否允许纵向缩放
            this.zedGraphControl1.IsEnableVZoom = true;
            //是否允许缩放
            this.zedGraphControl1.IsEnableZoom = true;
            //是否显示右键菜单
            this.zedGraphControl1.IsShowContextMenu = true;
            //复制图像时是否显示提示信息
            this.zedGraphControl1.IsShowCopyMessage = true;
            //鼠标在图表上移动时是否显示鼠标所在点对应的坐标 默认为false
            this.zedGraphControl1.IsShowCursorValues = true;
            //是否显示横向滚动条
            this.zedGraphControl1.IsShowHScrollBar = true;
            //是否显示纵向滚动条
            this.zedGraphControl1.IsShowVScrollBar = true;
            //鼠标经过图表上的点时是否显示该点所对应的值 默认为false
            this.zedGraphControl1.IsShowPointValues = true;
            //使用滚轮时以鼠标所在点为中心进行缩放还是以图形中心进行缩放
            //this.zedGraphControl1.IsZoomOnMouseCenter = true;
            #endregion
            //修改右键为中文菜单
            this.zedGraphControl1.ContextMenuBuilder += MyContextMenuBuilder;
        }
        private void zedGraphControl1_Load(object sender, EventArgs e)
        {
        }
        /// <summary>
        /// 打印预览
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            this.zedGraphControl1.DoPrintPreview();
        }
        //复制到剪切板
        private void button2_Click(object sender, EventArgs e)
        {
            //ture代表复制成功提示
            this.zedGraphControl1.Copy(true);
        }
        /// <summary>
        /// 获取图片并保存
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button3_Click(object sender, EventArgs e)
        {
            //获取图像
            Image image = this.zedGraphControl1.GetImage();
            //保存照片吗，指定保存路径
            image.Save(@"C:\Users\HAOHAO\Desktop\1.png");
            //弹窗提示
            MessageBox.Show("保存成功");
        }
        /// <summary>
        /// 显示另存为对话框
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button4_Click(object sender, EventArgs e)
        {
            this.zedGraphControl1.SaveAs();
        }
        /// <summary>
        /// 另存为BMP文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button5_Click(object sender, EventArgs e)
        {
            this.zedGraphControl1.SaveAsBitmap();
        }
        /// <summary>
        /// 另存为EMF文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button6_Click(object sender, EventArgs e)
        {
            this.zedGraphControl1.SaveAsEmf();
        }
        /// <summary>
        /// 一键复原
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button7_Click(object sender, EventArgs e)
        {
            //一键复原缩放
            this.zedGraphControl1.ZoomOutAll(myPane);
        }
        //右击菜单变中文
        private static void MyContextMenuBuilder(ZedGraphControl control, ContextMenuStrip menuStrip,
                    Point mousePt, ZedGraphControl.ContextMenuObjectState objState)
        {
            foreach (ToolStripMenuItem item in menuStrip.Items)
            {
                switch (item.Name)
                {
                    case "copied_to_clip":
                        item.Text = @"复制到剪贴板";
                        break;
                    case "copy":
                        item.Text = @"复制";
                        break;
                    case "page_setup":
                        item.Text = @"页面设置...";
                        break;
                    case "print":
                        item.Text = @"打印...";
                        break;
                    case "save_as":
                        item.Text = @"另存图表...";
                        break;
                    case "set_default":
                        item.Text = @"恢复默认大小";
                        break;
                    case "show_val":
                        item.Text = @"显示节点数值";
                        break;
                    case "title_def":
                        item.Text = @"标题";
                        break;
                    case "undo_all":
                        item.Text = @"还原缩放/移动";
                        break;
                    case "unpan":
                        item.Text = @"还原移动";
                        break;
                    case "unzoom":
                        item.Text = @"还原缩放";
                        break;
                    case "x_title_def":
                        item.Text = @"X 轴";
                        break;
                    case "y_title_def":
                        item.Text = @"Y 轴";
                        break;
                }
            }
        }
        private void button8_Click(object sender, EventArgs e)
        {
            myPane.YAxis.Scale.Max = 1500;
            //更新图表
            zedGraphControl1.Invalidate();
        }
        //设置Y轴下限
        private void button9_Click(object sender, EventArgs e)
        {
            myPane.YAxis.Scale.Min = -1500;
            //更新图表
            zedGraphControl1.Invalidate();
        }
        /// <summary>
        /// 设置X轴上限
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button10_Click(object sender, EventArgs e)
        {
            myPane.XAxis.Scale.Max = 60;
            //更新图表
            zedGraphControl1.Invalidate();
        }
        /// <summary>
        /// 设置X轴下限
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button11_Click(object sender, EventArgs e)
        {
            myPane.XAxis.Scale.Min = -5;
            //更新图表
            zedGraphControl1.Invalidate();
        }
    }
}