Precompiled Azure Functions C# Sample

function.json

{
  "scriptFile": "PreCompileEnvironmentVariables.dll",
  "entryPoint": "PreCompileEnvironmentVariables.MyFunction.Run",
  "bindings": [
    {
      "webHookType": "genericJson",
      "type": "httpTrigger",
      "direction": "in",
      "name": "req"
    },
    {
      "type": "http",
      "direction": "out",
      "name": "$return"
    }
  ],
  "disabled": false
}

MyFunction.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.Azure.WebJobs.Host;
using Newtonsoft.Json;

namespace PreCompileEnvironmentVariables
{
    public class MyFunction
    {
        public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
        {
            log.Info($"Webhook was triggered!");

            var appKey = "FooKey";
            var appValue = Environment.GetEnvironmentVariable(appKey);
            log.Info($"App Setting. Key : {appKey}, Value : {appValue}");

            string jsonContent = await req.Content.ReadAsStringAsync();
            dynamic data = JsonConvert.DeserializeObject(jsonContent);

            if (data.first == null || data.last == null)
            {
                return req.CreateResponse(HttpStatusCode.BadRequest, new
                {
                    error = "Please pass first/last properties in the input object"
                });
            }

            return req.CreateResponse(HttpStatusCode.OK, new
            {
                greeting = $"Hello {data.first} {data.last}!"
            });
        }
    }
}

packages.config

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net452" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net452" />
  <package id="Microsoft.Azure.WebJobs" version="1.1.2" targetFramework="net46" />
  <package id="Microsoft.Azure.WebJobs.Core" version="1.1.2" targetFramework="net46" />
  <package id="Microsoft.Data.Edm" version="5.6.2" targetFramework="net46" />
  <package id="Microsoft.Data.OData" version="5.6.2" targetFramework="net46" />
  <package id="Microsoft.Data.Services.Client" version="5.6.2" targetFramework="net46" />
  <package id="Microsoft.WindowsAzure.ConfigurationManager" version="1.8.0.0" targetFramework="net46" />
  <package id="Newtonsoft.Json" version="6.0.8" targetFramework="net452" />
  <package id="System.Spatial" version="5.6.2" targetFramework="net46" />
  <package id="WindowsAzure.Storage" version="4.3.0" targetFramework="net46" />
</packages>

PreCompileEnvironmentVariables.csproj

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{FD5FD41F-D92D-47FC-9AF7-37CB957F98BC}</ProjectGuid>
    <OutputType>Library</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>PreCompileEnvironmentVariables</RootNamespace>
    <AssemblyName>PreCompileEnvironmentVariables</AssemblyName>
    <TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
    <TargetFrameworkProfile />
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>..\..\PreCompileEnvironmentVariablesWebhookCSharp\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <PlatformTarget>x86</PlatformTarget>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>..\..\PreCompileEnvironmentVariables\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Microsoft.Azure.WebJobs, Version=1.1.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.Azure.WebJobs.Core.1.1.2\lib\net45\Microsoft.Azure.WebJobs.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Microsoft.Azure.WebJobs.Host, Version=1.1.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.Azure.WebJobs.1.1.2\lib\net45\Microsoft.Azure.WebJobs.Host.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Microsoft.Data.Edm, Version=5.6.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.Data.Edm.5.6.2\lib\net40\Microsoft.Data.Edm.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Microsoft.Data.OData, Version=5.6.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.Data.OData.5.6.2\lib\net40\Microsoft.Data.OData.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Microsoft.Data.Services.Client, Version=5.6.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.Data.Services.Client.5.6.2\lib\net40\Microsoft.Data.Services.Client.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Microsoft.WindowsAzure.Configuration, Version=1.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.WindowsAzure.ConfigurationManager.1.8.0.0\lib\net35-full\Microsoft.WindowsAzure.Configuration.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Microsoft.WindowsAzure.Storage, Version=4.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\WindowsAzure.Storage.4.3.0\lib\net40\Microsoft.WindowsAzure.Storage.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Newtonsoft.Json.6.0.8\lib\net45\Newtonsoft.Json.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="System" />
    <Reference Include="System.Core" />
    <Reference Include="System.Net.Http.Formatting, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.AspNet.WebApi.Client.5.2.3\lib\net45\System.Net.Http.Formatting.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Spatial, Version=5.6.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\System.Spatial.5.6.2\lib\net40\System.Spatial.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Web.Http, Version=5.2.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <HintPath>..\..\packages\Microsoft.AspNet.WebApi.Core.5.2.3\lib\net45\System.Web.Http.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Xml.Linq" />
    <Reference Include="System.Data.DataSetExtensions" />
    <Reference Include="Microsoft.CSharp" />
    <Reference Include="System.Data" />
    <Reference Include="System.Net.Http" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="MyFunction.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <ItemGroup>
    <None Include="app.config" />
    <Content Include="function.json">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </Content>
    <None Include="packages.config">
      <SubType>Designer</SubType>
    </None>
    <None Include="TestOutput.json" />
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
       Other similar extension points exist, see Microsoft.Common.targets.
  <Target Name="BeforeBuild">
  </Target>
  <Target Name="AfterBuild">
  </Target>
  -->
</Project>