Web job app settings not detected after upgrading to .NET 6.0

Question

After upgrading a web job to .NET 6.0, it stopped recognizing the app settings and only works if we specify the settings in the app.config.

To provide some context, this web job runs every 5 minutes, performs some logic, and then calls an Azure function.

Here's a detailed rundown of what I've done:

I upgraded the project from .NET Framework 4.7.2 to .NET 6.0 and updated the dependent packages to their latest versions.

I noticed that JobHostConfiguration is no longer available and that I have to use HostBuilder from now on. I adjusted the code accordingly:

The web job initially started detecting my Azure function, but after deployment, it no longer recognizes the app settings.

Below is a snippet of my Azure function that fails to pick up the app settings:

using System.Configuration;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;

namespace CDP.Portal.Azure.WJCMTFileUpload
{
    public class Functions
    {
        /// <summary>
        /// Convert the customerlists into notes grouped by POS
        /// </summary>
        /// <returns></returns>
        [NoAutomaticTrigger]
        public static async Task RunFunction()
        {
            TelemetryClient appInsights = new TelemetryClient
            {
                InstrumentationKey = ConfigurationManager.AppSettings["AppInsights"]
            };

            try
            {

                var clientId = ConfigurationManager.AppSettings["ClientId"];

                if (clientId != null && !string.IsNullOrEmpty(clientId))
                {

                    //Common.Common.Log("ClientId", ConfigurationManager.AppSettings["ClientId"]);
                    //Common.Common.Log("ResourceUri", ConfigurationManager.AppSettings["ResourceUri"]);
                    //Common.Common.Log("KeyVaultUri", ConfigurationManager.AppSettings["KeyVaultUri"]);
                    //Common.Common.Log("KeyVaultSecretName", ConfigurationManager.AppSettings["KeyVaultSecretName"]);
                    //Common.Common.Log("ResourceApiUri", ConfigurationManager.AppSettings["ResourceApiUri"]);


                    string token = await CDP.Portal.Azure.Common.Common.AccessTokenGeneratorSecrets(ConfigurationManager.AppSettings["ClientId"],
                    ConfigurationManager.AppSettings["ResourceUri"],
                    ConfigurationManager.AppSettings["KeyVaultSecretName"]);



                    //Common.Common.Log("token", token);

                    CrmHelper._client = new HttpClient()
                    {
                        BaseAddress = new Uri(ConfigurationManager.AppSettings["ResourceApiUri"]),
                        DefaultRequestHeaders = { Authorization = new AuthenticationHeaderValue("Bearer", token) }
                    };
                }


                List<CustomerList> noteLists;

                string targetFilename = ConfigurationManager.AppSettings["targetFilename"];
                string nonoteRow = ConfigurationManager.AppSettings["nonoteRow"];

                if (string.IsNullOrEmpty(targetFilename))
                {
                    targetFilename = "CMT_";
                }

                try
                {
                    noteLists = await CrmHelper.GetNotesToProcess(appInsights, targetFilename, nonoteRow);

                }

The line:

var clientId = ConfigurationManager.AppSettings["ClientId"];

seems to return null even though clientId is specified in the app settings.

I have already tried different things such as:

• Using CloudConfigurationManager.GetSetting instead

• configSource= in AppSettings

And here's my .csproj file:

<Project Sdk="Microsoft.NET.Sdk;Microsoft.NET.Sdk.Publish">
  <PropertyGroup Label="Globals">
    <SccProjectName>SAK</SccProjectName>
    <SccProvider>SAK</SccProvider>
    <SccAuxPath>SAK</SccAuxPath>
    <SccLocalPath>SAK</SccLocalPath>
  </PropertyGroup>
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <Compile Remove="Helpers\CrmHelper.cs" />
    <Compile Remove="Helpers\CsvHelper.cs" />
    <Compile Remove="Models\CustomerList.cs" />
    <Compile Remove="Models\Note.cs" />
    <Compile Remove="Models\OdataCollectionWrapper.cs" />
    <Compile Remove="Models\Pos.cs" />
    <Compile Remove="Models\TargetList.cs" />
    <Compile Remove="Models\Translation.cs" />
  </ItemGroup>
  <ItemGroup>
    <None Remove="Helpers\CsvHelper.cs~RF130716c7.TMP" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="ClosedXML" Version="0.102.1" />
    <PackageReference Include="Microsoft.ApplicationInsights" Version="2.22.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions" Version="5.0.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Host.Storage" Version="5.0.0" />
    <PackageReference Include="Microsoft.IdentityModel.Clients.ActiveDirectory" Version="5.3.0" />
    <PackageReference Include="RestSharp" Version="110.2.0" />
    <PackageReference Include="System.Spatial" Version="5.8.5" />
    <PackageReference Include="Microsoft.Data.Edm" Version="5.8.5" />
    <PackageReference Include="Microsoft.Data.OData" Version="5.8.5" />
    <PackageReference Include="Microsoft.Data.Services.Client" Version="5.8.5" />
    <PackageReference Include="Microsoft.WindowsAzure.ConfigurationManager" Version="3.2.3" />
    <PackageReference Include="WindowsAzure.Storage" Version="9.3.3" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Core" Version="3.0.39" />
    <PackageReference Include="Microsoft.Azure.WebJobs" Version="3.0.39" />
    <PackageReference Include="Microsoft.Azure.KeyVault.Core" Version="3.0.5" />
    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
    <PackageReference Include="System.Configuration.ConfigurationManager" Version="8.0.0" />
  </ItemGroup>
  <ItemGroup>
    <None Update="settings.job">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
  </ItemGroup>
  <ItemGroup>
    <Folder Include="Helpers\" />
    <Folder Include="Models\" />
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\CDP.Portal.Azure.Common\CDP.Portal.Azure.Common.csproj" />
  </ItemGroup>
</Project>

Answer 1

recognizing the app settings and only works if we specify the settings in the app.config.

• You have set the Environment to Development in Program.cs file. Initially even I got the value as null.

• Remove the below line from Program.cs file.

builder.UseEnvironment(EnvironmentName.Development);

As a workaround, I have used your WebJob Function with my sample code to retrieve config values.

• In Functions.cs file, instead of ConfigurationManager, retrieve the values using IConfiguration.

My Functions.cs file:

using Microsoft.Azure.WebJobs;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;

namespace WebJobSQ
{
    public class Functions
    {
        private static IConfiguration myconfig { get; set; }

        [NoAutomaticTrigger]
        public static void RunFunction(ILogger logger)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(Environment.CurrentDirectory)
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddEnvironmentVariables();

            myconfig = builder.Build();

           var ClientId = myconfig["ClientId"];

            logger.LogInformation("Sample ClientID - " + ClientId);
        }
    }
}

• I don`t have any settings in my local config file.
• Deployed the App to Azure Web Jobs.
• I have set the ClientID in Environment Variables.

Output:

Answer 2

Thanks for your feedback.

In the meantime, I tried Environment.GetEnvironmentVariable("ClientId") and, surprisingly, it worked as expected. I've adapted all my code to it.

I still don't know why, because I know they're both supposed to do the same thing.