List XMl serialization/deserialization

To serialize list by using class in previous post :

            List<DefaultFeeForNewInvoice> fees = new List<DefaultFeeForNewInvoice>();
            fees.Add(new DefaultFeeForNewInvoice() { FeeAmount = (decimal)4.5, FeeSubTypeID = 13, PaymentSourceID = 4 });
            fees.Add(new DefaultFeeForNewInvoice() { FeeAmount = (decimal)4.5, FeeSubTypeID = 13, PaymentSourceID = 4 });
            fees.Add(new DefaultFeeForNewInvoice() { FeeAmount = (decimal)4.5, FeeSubTypeID = 13, PaymentSourceID = 4 });

            string str=CXMLConv.toXML(fees);

But for deserialization it'e required to use different method:

    /// <summary>
    ///  Deserialize List dotnet/csharp
    /// fees_con = (List<DefaultFeeForNewInvoice>) CXMLConv.Load(str_con, fees_con.GetType(), "ArrayOfDefaultFeeForNewInvoice");
    /// </summary>
    /// <param name="XMLString">The XML string.</param>
    /// <param name="t">The type</param>
    /// <param name="RootElementName">Name of the root element.</param>
    /// <returns></returns>
    static public object Load(string XMLString, Type t, string RootElementName)
    {

        XmlSerializer mySerializer =
        new XmlSerializer(t, new XmlRootAttribute(RootElementName));

        StringReader myReader =
        new StringReader(XMLString);

        return mySerializer.Deserialize(myReader);

    }

sample of the call:

fees_con = (List<DefaultFeeForNewInvoice>) CXMLConv.Load(str_con, fees_con.GetType(), "ArrayOfDefaultFeeForNewInvoice");

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