<PackageReference Include="System.Configuration.ConfigurationManager" Version="10.0.2" />

System.Configuration.ExeConfigurationFileMap

Defines the configuration file mapping for an .exe application. This class cannot be inherited.
namespace System.Configuration { public sealed class ExeConfigurationFileMap : ConfigurationFileMap { public string ExeConfigFilename { get; set; } public string RoamingUserConfigFilename { get; set; } public string LocalUserConfigFilename { get; set; } public ExeConfigurationFileMap(); public ExeConfigurationFileMap(string machineConfigFileName); } }