Serializar objetos em C# .NET

serializar.cs

// método para serializar objeto em xml
public static string Serializar(object objeto)
{
    try
    {
        StringBuilder writer = new StringBuilder();
        XmlSerializer serializer = new XmlSerializer(objeto.GetType());
 
        XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
        ns.Add(String.Empty, 'http://www.portalfiscal.inf.br/nfe');
 
        XmlWriterSettings settings = new XmlWriterSettings();
        settings.OmitXmlDeclaration = false;
        settings.Indent = true;
        settings.Encoding = Encoding.UTF8;
 
        using (XmlWriter xmlWriter = XmlWriter.Create(writer, settings))
        {
            serializer.Serialize(xmlWriter, objeto, ns);
            return writer.ToString();
        }
    }
    catch (Exception E)
    {
        throw E;
    }
}

// método para deserializar xml em objeto
public static object Deserializar(string xml, Type tipo)
{
    try
    {
        StringReader reader = new StringReader(xml);
        XmlSerializer serializer = new XmlSerializer(tipo);
        return serializer.Deserialize(reader);
    }
    catch (Exception E)
    {
        throw E;
    }
}