c# - Load Connection String from Config File in Azure Functions

Question

In my Azure Function I am using a Library which establishes a connection to an SQL server via the ConnectionString from the ConfigurationManager like this:

var cs = System.Configuration.ConfigurationManager.ConnectionStrings["DbConString"].ConnectionString;
DbConnection connection = new SqlConnection(cs);

Now when i set the connection string DbConString in the portal via the Application Settings everything is working fine. But for local development I use the azure-functions-cli and unfortunately I have no idea where i should place the connection string to have it loaded correctly via the ConfigurationManager.

I've tried to place it in the appsettings.json file but without success.

Edit: My appsettings.json currently looks like this:

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "",
    "AzureWebJobsDashboard": "",
    "MyServiceBusReader": "Endpoint=sb://xxxx=",
    "DbConStr1": "data source=(localdb)\MSSQLLocalDB;initial catalog=MyDb;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework",
    "ConnectionStrings": {
      "DbConStr2": "data source=(localdb)\MS..." 
    } 
  }
}

But I am not able to access "DbConStr1" via the ConfigurationManager. Adding "DbConStr2" within "ConnectionStrings" like described here leads to a compilation error. Maybe because I am not using .NET Core?

Edit2: I messed up the nesting of "ConnectionStrings". It has to be on the same nesting level as "Values":

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "",
    "AzureWebJobsDashboard": "",
    "MyServiceBusReader": "Endpoint=sb://xxxx="
  },
  "ConnectionStrings": {
    "DbConStr": "data source=(localdb)\MS..." 
  }
}

Answer 1

Add file local.setting.json

  {
    {
      "IsEncrypted": false,
       "Values": {
      "AzureWebJobsStorage": "UseDevelopmentStorage=true",
      "AzureWebJobsDashboard": "UseDevelopmentStorage=true",

      "tenantId": "You tenantId",
      "resource": "https://management.azure.com/",
      "ClientSecret": "You ClientSecret, Key from App Registry",
      "ClientId": "You ClientId, Application ID from App registry",

      "subscriptionId": "You subscriptionId",
      "resourceGroupName": "Your resourceGroupName",
      "serverName": " Your SQL Server",
      "databaseNameDW": "Your Database",
      "apiversion": "2017-10-01-preview"      
    }
}

In C# Code use:

private readonly static string tenantId = ConfigurationManager.AppSettings["tenantId"];