看到的一道题，用递归获取XML元素....
static void Main(string[] args)
{
string xmlContent = @"<FileSystem>
<DriverC>
<Dir DirName='MSDOS622'>
<File FileName ='Command.com' ></File>
</Dir>
<File FileName ='MSDOS.SYS' ></File>
<File FileName ='IO.SYS' ></File>
</DriverC>
<DriverC>
<Dir>
<File FileName ='DriverC.com' ></File>
</Dir>
<File FileName ='DriverC.SYS' ></File>
<File FileName ='DriverCIO.SYS' ></File>
</DriverC>
</FileSystem>";
var parentElement = XElement.Parse(xmlContent);
var elements = FindElements(parentElement.Elements(), "File");
}
public static IList<XElement> FindElements(IEnumerable<XElement> elements, string elementName)
{
if(elements==null||elements.Count()==0
||string.IsNullOrWhiteSpace(elementName))
{
return new List<XElement>();
}
var selectedElements = new List<XElement>();
foreach (var element in elements)
{
if (element.HasElements)
{
selectedElements.AddRange(FindElements(element.Elements(), elementName));
}
else
{
if (string.Equals(element.Name.LocalName, elementName))
{
selectedElements.Add(element);
}
}
}
return selectedElements;
}
