how to add APPsetting keys and value in other layer(DAL).

Question

using (var client = new HttpClient())

{

//client.BaseAddress = new Uri("https://cou-wrapper-api.setu.co");

client.DefaultRequestHeaders.Accept.Clear();

client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

client.DefaultRequestHeaders.Add("axxsx-channel-id", "Prghfdhgfh");

client.DefaultRequestHeaders.Add("axxxs-client-id", "fgfhdgfdhe-dc6b60e99403");

} 

 

///app setting //

 

<appSettings>

<add key="axxsx-channel-id" value="dsfadsafdsaf"/>

<add key="axxxs-client-id" value="f85ede94-1fcb-42d7-ac5e-dc6b60e99403"/>

</appSettings>