ConfigurationSettings.AppSettings is obsolete, warning

Question

var values = new NameValueCollection
{
    { \"key\", ConfigurationSettings.AppSettings[\"API-Key\"].ToString() },
    { \"image\", Convert.ToBase64String(File.ReadA         


        

Answer 1

Use the System.Configuration.ConfigurationManager class

string ServerName = System.Configuration.ConfigurationManager.AppSettings["Servername"];

Edit - added

Note, you may have to add a reference to System.Configuration.dll. Even if you can import the namespace without the reference, you will not be able to access this class unless you have the reference.