涉及：控件数据绑定，动画效果

using System;
using System.Windows.Forms;namespace PLCUI
{public partial class MainForm : Form{ public MainForm(){InitializeComponent();}private void MainForm_Load(object sender, EventArgs e){// 方式2：基于事件的方式，将控件和数据进行绑定,优点：在任何地方改变变量的值，所绑定的控件也能同时改变lblValue_D100.DataBindings.Add("Text", Program.PlcData, "D100");ucRightBelt1.DataBindings.Add("Data", Program.PlcData, "D100");}private void btnSimulate_Click(object sender, EventArgs e){ timer1.Enabled = true;}private void timer1_Tick(object sender, EventArgs e){// 模拟数据Program.PlcData.D100++;if (Program.PlcData.D100 > 15){Program.PlcData.D100 = 0;}// 方式1：基于轮询的方式，查询到plc数据，然后进行更新//lblValue_D100.Text = Program.PlcData.D100.ToString();//int status = 0;//if (Program.PlcData.D100 >= 0 && Program.PlcData.D100 <= 5)//{//    status = 0;//}//else if (Program.PlcData.D100 > 5 && Program.PlcData.D100 <= 10)//{//    status = 1;//}//else if (Program.PlcData.D100 > 10 && Program.PlcData.D100 <= 15)//{//    status = 2;//}//ucRightBelt1.ShowImage(status);} }
}

using System.ComponentModel;namespace PLCUI
{public class PLCData : INotifyPropertyChanged{ static int d100;static int d101; public int D100{get { return d100; }set{d100 = value;OnPropertyChanged(nameof(D100));}}public int D101{get { return d101; }set{d101 = value;OnPropertyChanged(nameof(D101));}}public event PropertyChangedEventHandler PropertyChanged;protected virtual void OnPropertyChanged(string propertyName){if (PropertyChanged != null){PropertyChanged(this, new PropertyChangedEventArgs(propertyName));}}}
}

using System;
using System.Windows.Forms;namespace PLCUI.customcontrol
{public partial class ucRightBelt : UserControl{int temp = 0;public ucRightBelt(){InitializeComponent();}public object data;public object Data{get{return data;}set{data = value;int plcdata = (int)data; int status = 0;if (plcdata >= 0 && plcdata <= 5){status = 0;}else if (plcdata > 5 && plcdata <= 10){status = 1;}else if (plcdata > 10 && plcdata <= 15){status = 2;}ShowImage(status);}}public void ShowImage(int status){if (temp == status) return;temp = status;this.pictureBox1.Invoke(new Action(() =>{switch(status){case 0:this.pictureBox1.Image = Properties.Resources.右皮带机待机;break;case 1:this.pictureBox1.Image = Properties.Resources.右皮带机工作1;break;case 2:this.pictureBox1.Image = Properties.Resources.右皮带机工作2;break;} }));} }
}