说明： 该程序实现了读写XML文件，并将XML文档中的数据通过列表框显示出来，并且实现了XML数据结构的多级查询。
(The program has read and write XML documents and XML document data through the list box is displayed, and XML data structure to achieve a multi-level query.)
文件列表：
XmlWork
.......\XmlWork
.......\.......\bin
.......\.......\...\Debug
.......\.......\...\.....\XmlWork.exe
.......\.......\...\.....\XmlWork.pdb
.......\.......\...\.....\XmlWork.vshost.exe
.......\.......\Form1.cs
.......\.......\Form1.Designer.cs
.......\.......\Form1.resx
.......\.......\obj
.......\.......\...\Debug
.......\.......\...\.....\TempPE
.......\.......\...\.....\XmlWork.csproj.GenerateResource.Cache
.......\.......\...\.....\XmlWork.exe
.......\.......\...\.....\XmlWork.Form1.resources
.......\.......\...\.....\XmlWork.pdb
.......\.......\...\.....\XmlWork.Properties.Resources.resources
.......\.......\...\XmlWork.csproj.FileList.txt
.......\.......\Program.cs
.......\.......\Properties
.......\.......\..........\AssemblyInfo.cs
.......\.......\..........\Resources.Designer.cs
.......\.......\..........\Resources.resx
.......\.......\..........\Settings.Designer.cs
.......\.......\..........\Settings.settings
.......\.......\TestPlan.xml
.......\.......\XmlWork.csproj
.......\XmlWork.sln
.......\XmlWork.suo
好评：
