Sorting
我们可以使用一些 LINQ to Xml 显示排序的 xml 文件,代码如下:
var xmlsWithFileName = Directory.GetFiles(directory)
.Select(fileName => new { fileName, xml = XDocument.Parse(File.ReadAllText(fileName)) })
.OrderBy(tuple => tuple.xml.Element("item").Element("author").Attribute("sortby").Value);
的每个元素带文件名的 xml将会有
- xml 属性,包含 XDocument 中的 XML
- fileName 属性,包含 XML 文件的路径
假设您的目标目录中有以下 xml 文件:
0001.xml
<item id="0001">
<year>2011</year>
<language id="English" />
<author sortby="Smith">John F.Smith</author>
<content></content>
</item>
0002.xml
<item id="0002">
<year>2012</year>
<language id="Portuguese" />
<author sortby="Monteiro">Alberto Monteiro</author>
<content></content>
</item>
您可以使用此代码来测试
public static void ShowXmlOrderedBySortByAttribute(string directory)
{
var xmlsWithFileName = Directory.GetFiles(directory)
.Select(fileName => new { fileName, xml = XDocument.Parse(File.ReadAllText(fileName)) })
.OrderBy(tuple => tuple.xml.Element("item").Element("author").Attribute("sortby").Value);
foreach (var xml in xmlsWithFileName)
{
Console.WriteLine($"Filename: {xml.fileName}{Environment.NewLine}Xml content:{Environment.NewLine}");
Console.WriteLine(xml.xml.ToString());
Console.WriteLine("================");
}
}
这段代码的输出是:
Filename: c:\temp\teste\0002.xml
Xml content:
<item id="0002">
<year>2012</year>
<language id="Portuguese" />
<author sortby="Monteiro">Alberto Monteiro</author>
<content></content>
</item>
================
Filename: c:\temp\teste\0001.xml
Xml content:
<item id="0001">
<year>2011</year>
<language id="English" />
<author sortby="Smith">John F.Smith</author>
<content></content>
</item>
================
如您所见,XML 0002.xml 出现在第一位,然后是 0001.xml