winform使用zedgraph绘制实时曲线卡顿

Question

我需要使用winfrom绘制实时曲线，使用的控件是zedgraph
但是曲线出来后，一顿一顿的，想请问有什么办法使曲线流畅些？
无法上传视频，有遇到相同的情况的吗

Answer 1

可能是由于 UI 线程被绘图操作阻塞导致的,在后台线程中更新数据： 实时曲线的数据更新最好放在一个独立的后台线程中进行，以避免阻塞 UI 线程。在后台线程中计算好数据后，再将数据传递给 UI 线程进行绘制。

using System;
using System.Threading;
using System.Windows.Forms;
using ZedGraph;

namespace RealTimeGraph
{
    public partial class MainForm : Form
    {
        private ZedGraphControl zedGraphControl1;
        private RollingPointPairList rollingPointPairList;
        private LineItem curve;
        private Random random = new Random();

        public MainForm()
        {
            InitializeComponent();
            InitializeGraph();
            StartUpdatingData();
        }

        private void InitializeGraph()
        {
            zedGraphControl1 = new ZedGraphControl();
            rollingPointPairList = new RollingPointPairList(1000);
            curve = zedGraphControl1.GraphPane.AddCurve("Real-time Data", rollingPointPairList, Color.Blue, SymbolType.None);
            Controls.Add(zedGraphControl1);
        }

        private void StartUpdatingData()
        {
            Thread dataUpdateThread = new Thread(UpdateDataLoop);
            dataUpdateThread.IsBackground = true;
            dataUpdateThread.Start();
        }

        private void UpdateDataLoop()
        {
            while (true)
            {
                double x = rollingPointPairList.Count;
                double y = random.NextDouble() * 100; // Replace this with your real data source

                // Update data in the rolling list
                rollingPointPairList.Add(x, y);

                // Update the graph on the UI thread
                zedGraphControl1.BeginInvoke(new Action(() =>
                {
                    UpdateGraph();
                }));

                Thread.Sleep(100); // Adjust the sleep duration based on your data update rate
            }
        }

        private void UpdateGraph()
        {
            // Redraw the graph
            zedGraphControl1.AxisChange();
            zedGraphControl1.Invalidate();
        }
    }
}