CloudConfigurationManager does not pick up ApplicationSettings from app.config

Question

I have a library containing some Azure helper classes. Inside these helper classes I obtain settings such as the Azure account name and key. When running in Azure these sett

Answer 1

The CloudConfigurationManager only supports the AppSettings part of the web.config/app.config and will try to read values from here if the setting is missing from the Azure configuration. The documentation states that it won't read the web.config/app.config if the property RoleEnvironment.IsAvailable is true (running in Azure), but that is incorrect as we can see in the source code below (no check for IsAvailable).

You can take a look at the source to see what happens:

    /// <summary>
    /// Gets a setting with the given name.
    /// </summary>
    /// <param name="name">Setting name.</param>
    /// <returns>Setting value or null if such setting does not exist.</returns>
    internal string GetSetting(string name)
    {
        Debug.Assert(!string.IsNullOrEmpty(name));

        string value = null;

        value = GetValue("ServiceRuntime", name, GetServiceRuntimeSetting);
        if (value == null)
        {
            value = GetValue("ConfigurationManager", name, n => ConfigurationManager.AppSettings[n]);
        }

        return value;
    }

As you can see, there is only one call to the normal ConfigurationManager class that simply accesses the AppSettings.