c# 线程中访问UI

方式一:

        private void btnCalc_Click(object sender, EventArgs e)
        {
            new Thread(new ThreadStart(Test)).Start();
        }

        private void Test()
        {
            if (this.textBox1.InvokeRequired)
            {
                this.textBox1.Invoke(new MethodInvoker(Test));
            }
            else
            {
                this.textBox1.Text = "12345";
            }
        }

 

方式二：

        public Form1()
        {
            InitializeComponent(); 
            content = SynchronizationContext.Current;
        }

        private SynchronizationContext content = null;

        private void btnCalc_Click(object sender, EventArgs e)
        {
            new Thread(new ThreadStart(Test2)).Start();
        }

        private void Test2()
        {
            content.Post((e) =>
            {
                if (this.textBox1.InvokeRequired)
                {
                    this.textBox1.Invoke(new MethodInvoker(Test));
                }
                else
                {
                    this.textBox1.Text = "12345";
                }
            }, null);
        }