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I'm new to Azure's function... I've created a new timer function (will be fired every 30 minutes) and it has to perform a query on a url, then push data on the buffer..

I've done

public static void Run(TimerInfo myTimer, TraceWriter log)



 var s = CloudConfigurationManager.GetSetting("url");

 log.Info(s);

And in my function settings I've

What am I doing wrong?
Thanks

You need to go to Platform Features -> Application settings and add it there.

Add the setting under App settings.

Reading the setting can be done by first adding this at the top:

using System.Configuration;

And then reading a setting with:

string setting = ConfigurationManager.AppSettings["url"];

Where url is your setting key. The setting variable will contain your setting value.

Note that for Azure Functions v2 this is no longer true.
The following is from Jon Gallant's blog:

For Azure Functions v2, the ConfigurationManager is not supported and you must use the ASP.NET Core Configuration system:

1. 
   

   Include the following using statement:

   
   
   

   using Microsoft.Extensions.Configuration;
   

   
   


2. 
   

   Include the ExecutionContext as a parameter

   
   
   

   public static void Run(InboundMessage inboundMessage, 
    TraceWriter log,
    out string outboundMessage, 
    ExecutionContext context)
   

   
   


3. 
   

   Get the IConfiguration Root

   
   
   

   var config = new ConfigurationBuilder()
    .SetBasePath(context.FunctionAppDirectory)
    .AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
    .AddEnvironmentVariables()
    .Build();
   

   
   


4. 
   

   And use it to reference AppSettings keys

   
   
   

   var password = config["password"]
   

   
   

When debugging locally, it gets the settings from local.settings.json under the "Values" keyword. When running in Azure, it gets the settings from the Application settings tab.

You can use System.Environment.GetEnvironmentVariable like this:

var value = Environment.GetEnvironmentVariable("your_key_here")

This gets settings whenever you're working locally or on Azure.