C form controls can be referenced in other classes

c# Form controls can be referenced in other classes

resolvent ： Static definition first ui1, Then assign the main form value to ui1

 public partial class Ui1 : Form
    {
    
        // The purpose is that form controls can be referenced in other classes 
        // Static definition first ui1;
        public static Ui1 uil;
        public Ui1()
        {
    
            InitializeComponent();
            // Then assign the main form to ui1
            uil = this;
        }
 }

Reference the form control in the class ：

 void run()
        {
    
            while (true)
            {
    
                mcbWrite("S,1");
                //sp1.WriteLine("S,1");
                //mcbReceiveData = sp1.ReadLine();
                Ui1.uil.mcbReceiveData = mcbRead();
                if (Ui1.uil.isStopMcb)
                {
    
                    ;
                }
                else
                {
    
                    Ui1.uil.listBox1.Invoke(new Action(() =>
                    {
    
                        Ui1.uil.listBox1.Items.Add(Ui1.uil.mcbReceiveData);
                        Ui1.uil.listBox1.SelectedIndex = Ui1.uil.listBox1.Items.Count - 1;
                    }));


               
                }
            }
        }