❔ How do i handle user settings in wpf .net core

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <section name="TestSettings" type="WpfApp1.TestSettings, WpfApp1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
    </configSections>
    <TestSettings OptIn="HellYes" />
</configuration>

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <section name="TestSettings" type="WpfApp1.TestSettings, WpfApp1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
    </configSections>
    <TestSettings OptIn="HellYes" />
</configuration>

public class TestSettings : ConfigurationSection
{
    public const string SectionName = nameof(TestSettings);

    [ConfigurationProperty(nameof(OptIn), DefaultValue = CoolEnum.Unknown)]
    public CoolEnum OptIn
    {
        get => (CoolEnum)this[nameof(OptIn)];
        set => this[nameof(OptIn)] = value;
    }
}

public enum CoolEnum
{
    Unknown,
    HellYes,
    PleaseNo
}

public class TestSettings : ConfigurationSection
{
    public const string SectionName = nameof(TestSettings);

    [ConfigurationProperty(nameof(OptIn), DefaultValue = CoolEnum.Unknown)]
    public CoolEnum OptIn
    {
        get => (CoolEnum)this[nameof(OptIn)];
        set => this[nameof(OptIn)] = value;
    }
}

public enum CoolEnum
{
    Unknown,
    HellYes,
    PleaseNo
}