LINQ to XML新手问题:返回多个结果

Question

问候!

我正在努力绕着LINQ缠头.如果我有一些这样的XML加载到XDocument对象中:

<Root>
    <GroupA>
        <Item attrib1="aaa" attrib2="000" attrib3="true" />
    </GroupA>
    <GroupB>
        <Item attrib1="bbb" attrib2="111" attrib3="true" />
        <Item attrib1="ccc" attrib2="222" attrib3="false" />
        <Item attrib1="ddd" attrib2="333" attrib3="true" />
    </GroupB>
    <GroupC>
        <Item attrib1="eee" attrib2="444" attrib3="true" />
        <Item attrib1="fff" attrib2="555" attrib3="true" />
    </GroupC>
</Root>

我想获取Group元素的所有Item子元素的属性值.这是我的查询的样子:

var results = from thegroup in l_theDoc.Elements("Root").Elements(groupName)
              select new
              { 
                 attrib1_val = thegroup.Element("Item").Attribute("attrib1").Value,      
                 attrib2_val = thegroup.Element("Item").Attribute("attrib2").Value,
              };

该查询有效,但是如果例如groupName变量包含"GroupB",则只返回一个结果(第一个Item元素)而不是三个.我错过了什么吗？

Answer 1

XElement e = XElement.Parse(testStr);

string groupName = "GroupB";
var items = from g in e.Elements(groupName)
            from i in g.Elements("Item")
            select new {
                           attr1 = (string)i.Attribute("attrib1"),
                           attr2 = (string)i.Attribute("attrib2")
                       };

foreach (var item in items)
{
    Console.WriteLine(item.attr1 + ":" + item.attr2);
}