public static string SerializeObjectToString(object psObject, Type poType)
{
    XmlSerializer loXmlSerializer = new XmlSerializer(poType);
    StringWriter loSW = new StringWriter();
    loXmlSerializer.Serialize(loSW, poObject);
    string lsSerializedXml = loSW.ToString();

    return lsSerializedXml;
}

public static object DeserializeStringToObject(string psString, Type poType)
{
    XmlSerializer loXmlSerializer = new XmlSerializer(poType);
    object loDeserializedXml;
    loDeserializedXml = (object)loXmlSerializer.Deserialize(new StringReader(psString));

    return loDeserializedXml;
}