初次接触C#时做的一个小例子，先贴到这吧。由于多线程编程非常复杂，这个小例子只能算是一个入门线的知识点吧

首先建一个应用程序项目，命名为ThreadExample，在窗体上放一个文本框(textBox1) ，一个标签(lblResult)，再放两个按钮，分别命名为btnStart、btnStop。

窗体代码：

namespace ThreadExample
...{
    partial class ThreadExample
    ...{
        /**//// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /**//// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        ...{
            if (disposing && (components != null))
            ...{
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        Windows Form Designer generated code#region Windows Form Designer generated code

        /**//// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        ...{
            this.btnStart = new System.Windows.Forms.Button();
            this.btnStop = new System.Windows.Forms.Button();
            this.button1 = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.lblResult = new System.Windows.Forms.Label();
            this.SuspendLayout();
            //
            // btnStart
            //
            this.btnStart.Location = new System.Drawing.Point(14, 38);
            this.btnStart.Name = "btnStart";
            this.btnStart.Size = new System.Drawing.Size(75, 23);
            this.btnStart.TabIndex = 0;
            this.btnStart.Text = "启动";