具有部门名称和分支名称的Lambda表达式

Question

<Employee>
    <Data>
        <Details type = "Personal">
            <Detail  Name ="John"   Associate Job="Job">
                <Department Name="Law" >
                    <Branch>New York</Branch>
                    <Branch>Florida</Branch>
                </Department>
                <Department Name="Lecture" >
                    <Branch>London</Branch>
                    <Branch>Brit</Branch>
                </Department>
            </Detail>
        </Details>
    </Data>
</Employee>

输出

Law --     New York,
           Florida

Lecture -- London,
           Brit

上述XML格式的Lambda表达式：---

var employee =（从document.Descendants（“ Detail”）中的r开始。其中（r =>（string）r.Attribute（“ Name”）==“ John”）选择新的{键= r.Element（ “部门”）。属性（“名称”）。值，值=（从（r.Element（“部门”）.Elements（“分支”））中的类型选择type.Value）.ToArray（）}）                                     .ToDictionary（t => t.key，t => t.value）;

只有一条记录要来

Law --     New York,
           Florida

缺少：-

Lecture -- London,
           Brit

Answer 1

您可以先选择所有Department元素：

var employee = (from r in document.Descendants("Detail").Where(r => (string)r.Attribute("Name") == "John").SelectMany(x => x.Elements("Department"))
                            select new { key = r.Attribute("Name").Value,
                                value = (from type in r.Elements("Branch") select type.Value).ToArray() })
                            .ToDictionary(t => t.key, t => t.value);