CustomConfigurations.Config.GetConfiguration C# (CSharp) Method

        private Configuration GetConfiguration(string configPath)
        {
            Configuration config;
            if (configPath.EndsWith("web.config"))
            {
                config = WebConfigurationManager.OpenWebConfiguration(configPath);
            }
            else
            {
                var p = configPath.Substring(0, configPath.Length - ".config".Length);
                config = ConfigurationManager.OpenExeConfiguration(p);
            }
            return config;
        }