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   "source": [
    "Thread 使用\n",
    "==============================\n",
    "学习 Thread，执行各种 Thread 操作。\n",
    "特别注意：NoteBook 本身的运行线程是后台线程，不会等待由其创建的线程执行结束。与控制台等应用有区别。 "
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   "source": [
    "> 全局设置，语言设置、Nuget包引用、空间引用等"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
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     "language": "csharp"
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   "source": [
    "//全局设置\n",
    "#!csharp\n",
    "using System.Threading;\n",
    "using System.Threading.Channels;\n",
    "using System.Threading.Tasks;"
   ]
  },
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     "language": "csharp"
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   "source": [
    "> 创建托管线程，注意：NoteBook 本身的运行线程是后台线程，不会等待由其创建的线程执行结束，这点与控制台等应用有区别。 "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
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    "dotnet_interactive": {
     "language": "csharp"
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    "polyglot_notebook": {
     "kernelName": "csharp"
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     "languageId": "polyglot-notebook"
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   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "NoteBook线程，线程ID：6 \n",
      "NoteBook线程，线程名：.NET ThreadPool Worker \n",
      "NoteBook线程，线程池线程：是的 \n",
      "NoteBook线程，后台线：是的 \n"
     ]
    }
   ],
   "source": [
    "//显示 NoteBook 执行线程信息\n",
    "var desc = \"NoteBook线程，\";\n",
    "Console.WriteLine($\"{desc}线程ID：{Thread.CurrentThread.ManagedThreadId} \");\n",
    "Console.WriteLine($\"{desc}线程名：{Thread.CurrentThread.Name} \");\n",
    "Console.WriteLine($\"{desc}线程池线程：{(Thread.CurrentThread.IsThreadPoolThread ? \"是的\" : \"否\")} \");\n",
    "Console.WriteLine($\"{desc}后台线：{(Thread.CurrentThread.IsBackground ? \"是的\" : \"不是\")} \");"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 60,
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     "language": "csharp"
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    "polyglot_notebook": {
     "kernelName": "csharp"
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    "vscode": {
     "languageId": "polyglot-notebook"
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   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "线程：新线程，已经执行！\n",
      "线程：NoteBook线程，, 执行结束！\n"
     ]
    }
   ],
   "source": [
    "ThreadStart start = ()=>\n",
    "{\n",
    "    Console.WriteLine($\"线程：{Thread.CurrentThread.Name}，已经执行！\");\n",
    "};\n",
    "\n",
    "var t = new Thread(start)\n",
    "{\n",
    "    Name=\"新线程\"\n",
    "};\n",
    "t.Start();\n",
    "//如果不join，新创建的线程，可能还没来得及执行，就随着Notebook线程的结束而结束了。\n",
    "t.Join();\n",
    "\n",
    "Console.WriteLine($\"线程：{desc}, 执行结束！\");\n"
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