Skipping Invalid Values On Deserialize

Question

Is it possible to skip invalid values up on de-serialization? For example if a user inserted a invalid value inside the xml file.

Class Definition

using Relink.Data.Enum;
using System;
using System.IO;
using System.Xml.Serialization;
using System.ComponentModel; 

namespace Relink {

    [Serializable]
    public class Settings {

        internal static XmlSerializer Serializer = new XmlSerializer(typeof(Settings));

        public Difficulty Difficulty {
            get;
            set;
        }

        public Boolean CaptureMouse {
            get;
            set;
        }

        internal void loadDefaults() {
            this.Difficulty = Difficulty.Normal;
            this.CaptureMouse = false;
        }

    }

}

Serialization Method

// ...
if(!File.Exists(GameDir + SettingsFile)) {
    Settings = new Settings();
    Settings.loadDefaults();
    TextWriter writer = new StreamWriter(GameDir + SettingsFile);
    Settings.Serializer.Serialize(writer, Settings);
    writer.Close();
    writer.Dispose();
} else {
    TextReader reader = new StreamReader(GameDir + SettingsFile);
    Settings = (Settings)Settings.Serializer.Deserialize(reader);
}
// ...

XML Content (valid)

<?xml version="1.0" encoding="utf-8"?>
<Settings xmlns:xsi="http://ift.tt/ra1lAU" xmlns:xsd="http://ift.tt/tphNwY">
  <Difficulty>Normal</Difficulty>
  <CaptureMouse>false</CaptureMouse>
</Settings>

XML Content (invalid)

<?xml version="1.0" encoding="utf-8"?>
<Settings xmlns:xsi="http://ift.tt/ra1lAU" xmlns:xsd="http://ift.tt/tphNwY">
  <Difficulty>Moo</Difficulty>
  <CaptureMouse>false</CaptureMouse>
</Settings>

Remarks

I don't want to "reset" the users settings, i just want to skip the invalid stuff and use default values instead. Otherwise i would you a try/catch construct and just re-generate the xml file.