C# 中Chart动态柱状图实现

freesheep720

已于 2023-03-29 13:34:00 修改

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分类专栏： C# 文章标签： c# 开发语言 ui

于 2022-12-22 09:11:01 首次发布

本文链接：https://blog.youkuaiyun.com/ngwngw/article/details/128404165

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该博客展示了如何使用C#实现实时更新的柱状图效果。通过设置Chart控件的初始化属性，结合Timer控件定时刷新数据，生成随机数值并显示在柱状图上。博客内容包括设置图表类型、颜色、标签旋转、隐藏网格线等细节，以及添加多个数据点的过程。

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chart柱状图效果展示

Chart动态柱状图效果

实现

1）拖入Chart控件设置初始化属性；
2）拖入timer控件设置时间和启动；
3）代码实现

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 System.Windows.Forms.DataVisualization.Charting;

namespace Chartfresh
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void timer_Tick(object sender, EventArgs e)
        {
            chart1.Series[0].Points.Clear();
            chart1.Series.Clear();
            chart1.ChartAreas.Clear();
            Series series = new Series("series");
            ChartArea chartArea1 = new ChartArea();
            //随机数方便做测试
            Random ra = new Random();

            series.ChartType = SeriesChartType.Column;
            series.BorderColor = System.Drawing.Color.Red;
            series.BorderDashStyle = System.Windows.Forms.DataVisualization.Charting.ChartDashStyle.Solid;
            series.BorderWidth = 1;
            series.Color = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(0)))));
            series.IsValueShownAsLabel = true;
            series.LabelForeColor = System.Drawing.Color.Red;
            chartArea1.AxisX.IntervalAutoMode = System.Windows.Forms.DataVisualization.Charting.IntervalAutoMode.VariableCount;
            chartArea1.AxisX.IsLabelAutoFit = false;
           // chartArea1.AxisX.LabelStyle.IsStaggered = true;
           //X轴标签旋转90度
            chartArea1.AxisX.LabelStyle.Angle = 90;
            //隐藏网格线
            chartArea1.AxisX.MajorGrid.LineColor = System.Drawing.Color.Transparent;
            chartArea1.AxisY.MajorGrid.LineColor = System.Drawing.Color.Transparent;


            series.Points.AddXY("num_1", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_2", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_3", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_4", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_5", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_6", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_7", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_8", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_9", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_10", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_11", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_12", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_13", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_14", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_15", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_16", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_17", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_18", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_19", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_20", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_21", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_22", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_23", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_24", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_25", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_26", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_27", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_28", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_29", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_30", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_31", ra.Next(1, 50).ToString());
            series.Points.AddXY("num_32", ra.Next(1, 50).ToString());


            chart1.Series.Add(series);
            chart1.ChartAreas.Add(chartArea1);
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}

                                                               Author：freesheep720