如何使用LINQ-to-XML将以下XML加载到字典中？

Question

如何加载以下格式化的XML文档:

<Settings>
    <MimeTypes>
        <MimeType Type="application/mac-binhex40" Extensions=".hqx"/>
        <MimeType Type="application/msword" Extensions=".doc;.docx"/>
        <MimeType Type="application/pdf" Extensions=".pdf"/>
        <MimeType Type="application/vnd.ms-excel" Extensions=".xla;.xlc;.xlm;.xls;.xlt;.xlw;.xlsx"/>
    </MimeTypes> 
</Settings>

进入字典,其中键是单独的扩展名,值是mimetype.

所以,对于这一行:

<MimeType Type="application/vnd.ms-excel" Extensions=".xla;.xlc;.xlm;.xls;.xlt;.xlw;.xlsx"/>

我会有以下键值条目:

键:".xla"值:"application/vnd.ms-excel"
键:".xlc"值:"application/vnd.ms-excel"
键:".xlm"值:"application/vnd.ms-excel "
键:".xls"值:"application/vnd.ms-excel"
键:".xlt"值:"application/vnd.ms-excel"

我对LINQ-To-XML业务比较陌生.

我知道我应该将文档加载到XElement中,如:

 XElement settingsDoc = XElement.Load("Settings.xml");

但是,如何选择所有"MimeType"条目？

Answer 1

就像是:

 var dictionary = (from element in settingsDoc.Descendants("MimeType")
                   from extension in element.Attribute("Extensions")
                                         .Value.Split(';')
                   select new { Type = element.Attribute("Type").Value,
                                Extension = extension })
                   .ToDictionary(x => x.Extension,
                                 x => x.Type);