查询与Linq名称相同的XML元素

我有以下XML:

<?xml version="1.0" encoding="UTF-8"?>
<ProductTypes>
    <ProductType Name="MyProduct">
        <Amount>100</Amount>
        <Pattern Length="1" AllowedCharacters="ABCD"/>
        <Pattern Length="7" AllowedCharacters="EFGH"/>
    </ProductType>
</ProductTypes>

使用Linq to XML，我可以成功地从任意数量的元素ProductType中提取信息。但是，我还需要所有元素Pattern的信息。

        XElement xml = XElement.Load("pattern_config.xml");
        var productTypes = from productType in xml.Elements("ProductType")
                           select new {
                               Name = productType.Attribute("Name").Value,
                               Amount = Convert.ToInt32(productType.Element("Amount").Value)
                               // How to get all Pattern elements from that ProductType?
                           };

我该怎么做?或者您会推荐另一种访问XML的方法吗?

 var productTypes = from productType in xml.Elements("ProductType")
                select new {
                   Name = productType.Attribute("Name").Value,
                   Amount = Convert.ToInt32(productType.Element("Amount").Value),
                   // How to get all Pattern elements from that ProductType?
                   Patterns = from patt in productType.Elements("Pattern")
                              select new { Length = int.Parse(patt.Attribute("Length").Value),
                                           .... }
                 };