frmupdateui1.cs

来自「Microsoft Mobile Development Handbook的代码」· CS 代码 · 共 45 行

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

namespace CodeForChapter11cs
{
  public partial class frmUpdateUI1 : Form
  {
    public frmUpdateUI1()
    {
      InitializeComponent();
    }

    private void menuItem1_Click(object sender, EventArgs e)
    {
      Thread t = new Thread(this.ThreadMethod); //or this.AlternativeThreadMethod
      t.Name = "Worker: Assigns form's caption text.";
      t.Start();
    }

    private void menuItem2_Click(object sender, EventArgs e)
    {
      this.UpdateUI();
    }

    delegate void MethodInvoker();

    private void UpdateUI()
    {
      this.Text = textBox1.Text;
    }

    private void ThreadMethod()
    {
      this.Invoke(new MethodInvoker(UpdateUI));
    }
    
    private void AlternativeThreadMethod()
    {
      this.Invoke(new MethodInvoker(
                    delegate() { this.Text = textBox1.Text; }
                  ));
    }
  }
}