注 我用的是C#
我自己写了一个类，功能是读取XML文件中的指定节点的值。
XML文件内容如下：
<?xml version="1.0" encoding="utf-8"?>
<Patients>
<Patients_virtue>
<ID>001 </ID>
<Last_Name>jay </Last_Name>
<First_Name>hoho </First_Name>
<MI>0091 </MI>
<Creation_Date>20091220 </Creation_Date>
<Patient_ID>100 </Patient_ID>
<Sex>nan </Sex>
<Date_of_Birth>19820611 </Date_of_Birth>
<Patient_Photo>C:Patient_Photo\ID001.png </Patient_Photo>
<Weight>75kg </Weight>
<Known_Allergies>yes </Known_Allergies>
<Specialty>ewet3 </Specialty>
<MRN>1.5 </MRN>
<Purpose_of_Consultation>edawfvds </Purpose_of_Consultation>
</Patients_virtue>
</Patients>
类如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml;
namespace ClassLibrary1
{
public class
