没有从Linq到XML的输出 [英] No output from Linq to XML

问题描述

我有以下代码:

protected void Page_Load(object sender, EventArgs e)
{
    XElement xml = XElement.Load(Server.MapPath("ArenasMembers.xml"));

    var query = from p in xml.Descendants("members")
                select new
                {
                    Name = p.Element("name").Value,
                    Email = p.Attribute("email").Value
                };

    foreach (var member in query)
    {
        Response.Write("Employee: " + member.Name + " " + member.Email + "<br />");
    }
}

使用Visual Studio中的悬停信息可以正确读取XNL文件，但是foreach不会输出任何记录.

Which, using the hover information in Visual Studio, is reading the XNL file in correctly, however the foreach is not outputting any of the records.

XML:

<?xml version="1.0" encoding="utf-8" ?>
<members>
    <member>
        <arena>EAA Office</arena>
        <memberid>1</memberid>
        <name>Jane Doe</name>
        <email>[e-mail]</email>
    </member>
    <member>
        <arena>EAA Office</arena>
        <memberid>2</memberid>
        <name>John Bull</name>
        <email>[e-mail]</email>
    </member>
    <member>
        <arena>O2 Arena</arena>
        <memberid>3</memberid>
        <name>John Doe</name>
        <email>[e-mail]</email>
    </member>
    <member>
        <arena>O2 Arena</arena>
        <memberid>4</memberid>
        <name>Bernard Cribbins</name>
        <email>[e-mail]</email>
    </member>
    <member>
        <arena>Colourline Arena</arena>
        <memberid>5</memberid>
        <name>John Bon Jovi</name>
        <email>[e-mail]</email>
    </member>
    <member>
        <arena>NIA</arena>
        <memberid>6</memberid>
        <name>Rhianna</name>
        <email>[e-mail]</email>
    </member>
</members>

您看到什么地方了吗?

推荐答案

由成员"插入尝试成员" ...

Insted of "members" try "member"...

Descendants返回给定Element下的所有子元素，在您的代码中，您将使用name和email查询members，这将不起作用.

Descendants returns you all the child elements under given Element, in your code you are querying members with name and email, which wont work.

示例代码:

 var query = from p in xml.Descendants("member")
                    select new
                    {
                        Name = p.Element("name").Value,
                        Email = p.Element("email").Value
                    };

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