对节点匹配列表框项的子节点进行计数
本文关键字:子节点 节点 列表 | 更新日期: 2023-09-27 18:33:50
我在这里遇到选定的索引更改问题。我的xml文件包含模块编号,模块名称,评估,学分等。我在这里试图实现的是 - 一些课程详细信息从 xml(模块名称和代码)加载到列表框中,但当用户选择一个模块时,标签应显示该模块有多少评估。这是我的 XML 文件示例
<module>
<moduleCode>ECWM618</moduleCode>
<moduleTitle>Semantic and Social Web</moduleTitle>
<credits>15</credits>
<semester>2</semester>
<assessmentDetails>
<assessment>
<assessmentName>Coursework1</assessmentName>
<assessmentType>Coursework</assessmentType>
<assessmentWeighting>25</assessmentWeighting>
</assessment>
<assessment>
<assessmentName>Coursework2</assessmentName>
<assessmentType>Coursework</assessmentType>
<assessmentWeighting>25</assessmentWeighting>
</assessment>
<assessment>
<assessmentName>Exam</assessmentName>
<assessmentType>Exam</assessmentType>
<assessmentWeighting>50</assessmentWeighting>
</assessment>
</assessmentDetails>
</module>
这是我得到的代码
private void moduleSummaryBox_SelectedIndexChanged(object sender, EventArgs e)
{
// when module from modulelist is selected, it read all indicies assigned to the module.
//!!!!!!!! it reads last node only :(? wtf im tired ...lol
//
// read data from modulelist
string path = Directory.GetCurrentDirectory();
FileStream fs = new FileStream(@"myCourse.xml", FileMode.OpenOrCreate, FileAccess.Read, FileShare.Read);
XmlReader moduleReader = XmlReader.Create(fs);
moduleReader.Read();
while (moduleReader.Read())
{
int assessmentNo = 0;
bool match = false;
moduleReader.MoveToElement();
if (moduleReader.Name == "assessmentName")
{
moduleReader.Read();// reads xml file.
XmlNodeType nType = moduleReader.NodeType; //XmlNodeType Specifies the type of node. If node matches specified name = true.
if (nType == XmlNodeType.Text)// if node type match XmlNodeType ( and there is some text in it) statement becomes true
{
this.assno.Text = (moduleReader.Value.ToString()); //set mcode label to matched node.
}
}
if (moduleReader.Value.ToString() == moduleSummaryBox.Items[moduleSummaryBox.SelectedIndex].ToString())
{
match = true;
}
if (match == true)
{
break;
}
}
}
帮助赞赏谢谢:)
编辑:这是进入列表框的内容
moduleSummaryBox.Items.Clear();
XmlDocument doc = new XmlDocument();
doc.Load(@"myCourse.xml");
XmlNodeList levelList = doc.GetElementsByTagName("level"+l_level);
foreach (XmlNode node in levelList)
{
XmlElement moduleElement = (XmlElement)node;
XmlNodeList modules_individ = moduleElement.GetElementsByTagName("module");
foreach (XmlNode nodes in modules_individ)
{
XmlElement moduleSeperator = (XmlElement)nodes;
string ll_moduleCode = moduleSeperator.GetElementsByTagName("moduleCode")[0].InnerText;
string ll_moduleTitle = moduleSeperator.GetElementsByTagName("moduleTitle")[0].InnerText;
moduleSummaryBox.Items.Add(ll_moduleCode+" : " + ll_moduleTitle+" ");
}
}
你能试试下面的代码示例吗:-
const string xmlString =
"<module><moduleCode>ECWM618</moduleCode><moduleTitle>Semantic and Social Web</moduleTitle><credits>15</credits>" +
"<semester>2</semester><assessmentDetails><assessment><assessmentName>Coursework1</assessmentName><assessmentType>Coursework</assessmentType>" +
"<assessmentWeighting>25</assessmentWeighting></assessment><assessment><assessmentName>Coursework2</assessmentName><assessmentType>Coursework</assessmentType>" +
"<assessmentWeighting>25</assessmentWeighting></assessment><assessment><assessmentName>Exam</assessmentName><assessmentType>Exam</assessmentType><assessmentWeighting>50</assessmentWeighting></assessment></assessmentDetails></module>";
var xml = XElement.Parse(xmlString);
var qry =
xml.Descendants()
.Where(e => e.Name == "moduleCode" && e.Value == "ECWM618")
.Ancestors()
.Descendants()
.Where(e => e.Name == "assessmentDetails")
.Elements("assessment").Count();