{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "[this doc on github](https://github.com/dotnet/interactive/tree/master/samples/notebooks/csharp/Docs)\n",
    "\n",
    "# Importing packages, libraries, and scripts"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can load packages into a .NET notebook from NuGet using the following syntax:\n",
    "\n",
    "```csharp\n",
    "#r \"nuget:<package name>[,<package version>]\"\n",
    "```\n",
    "\n",
    "If you don't provide an explicit package version, the latest available non-preview version will be loaded.\n",
    "\n",
    "Here's an example:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    }
   },
   "outputs": [],
   "source": [
    "#r \"nuget:System.Reactive.Linq, 4.1.5\""
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Now that the package is loaded, we can add some `using` statements and write some code."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    }
   },
   "outputs": [],
   "source": [
    "using System.Reactive;\n",
    "using System.Reactive.Linq;\n",
    "using System.Reactive.Concurrency;\n",
    "\n",
    "var output = display(\"Counting...\");\n",
    "\n",
    "var sub = Observable\n",
    "    .Interval(TimeSpan.FromSeconds(.5), CurrentThreadScheduler.Instance)    \n",
    "    .Take(10) \n",
    "    .Subscribe(i => output.Update(i));"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "If you want to load an assembly that's already on disk, you can do so using this syntax:\n",
    "\n",
    "```csharp\n",
    "#r \"<path to .dll>\"\n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "You can load a C# script (typically a `.csx` file) into the notebook using this syntax:\n",
    "\n",
    "```csharp\n",
    "#load \"<path to .csx file>\"\n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "dotnet_interactive": {
     "language": "csharp"
    }
   },
   "outputs": [],
   "source": [
    "#load \"something.csx\""
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": ".NET (C#)",
   "language": "C#",
   "name": ".net-csharp"
  },
  "language_info": {
   "file_extension": ".cs",
   "mimetype": "text/x-csharp",
   "name": "C#",
   "pygments_lexer": "csharp",
   "version": "8.0"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 4
}