不用Invoke就等用 Control.CheckForIllegalCrossThreadCalls = false;

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading; using System.Threading.Tasks; using System.Windows.Forms; namespace 多线程_委托 { public partial class Form1 : Form { public Form1() { InitializeComponent(); //3.2在窗体加载的时候用‘写的方法DoShoumsgintextbox（）’来实例化委托 Control.CheckForIllegalCrossThreadCalls = false; dgshoumsgintextbox = new DGDoshoumsgintextbox(DoShoumsgintextbox); DGaddtext dgaddtext = new DGaddtext(Addtext); } //4要调用的方法 private void AddString() { DateTime beginTime = DateTime.Now; for (int i = 0; i