linq有关问题，望高手帮忙

linq问题，望高手帮忙
小弟现在正在学linq问一个简单的问题，别见笑。

XML code

<Provinces>  <Province ID="1" Name="北京市">北京市</Province>  <Province ID="2" Name="天津市">天津市</Province></Provinces>

C# code

 XElement x = XElement.Load("D:\\ajax+jquery联动下拉\\ajax+jquery联动下拉\\ajax+jquery联动下拉\\XML\\Province.xml");                ddlCountry.DataSource= from pn in x.Descendants("Province")                               select x;                ddlCountry.DataTextField = "Name";                ddlCountry.DataValueField = "ID";                ddlCountry.DataBind();

C# code

ddlCountry.DataSource= from pn in x.Descendants("Province")                               select new{Name=x.Attribute("Name").Value,ID=x.Attribute("ID").Value}                ddlCountry.DataTextField = "Name";                ddlCountry.DataValueField = "ID";                ddlCountry.DataBind();
[解决办法]
ddlCountry.DataSource= from pn in x.Descendants("Province")
                              select new{
Name=x.Attribute("Name")==null?"":x.Attribute("Name").Value,
ID=x.Attribute("ID")==null?"":x.Attribute("ID").Value
}
               ddlCountry.DataTextField = "Name";
               ddlCountry.DataValueField = "ID";
               ddlCountry.DataBind();