我有一个在 form_load 事件上执行的方法,它似乎可以正常工作,省略一行。
private int ReadInPeople()
{
XmlNodeList nodeList = m_xmlDoc.DocumentElement.ChildNodes;
foreach (XmlNode PersonNode in nodeList)
{
Employee ccontact = new Employee();
foreach (XmlNode PersonTag in PersonNode.ChildNodes)
{
switch (PersonTag.Name)
{
case "Employee":
ccontact.EmployeeNumber = PersonTag.FirstChild.Value;
break;
case "FirstName":
ccontact.FirstName = PersonTag.FirstChild.Value;
break;
case "LastName":
ccontact.LastName = PersonTag.FirstChild.Value;
break;
default:
break;
}
}
this.AddContact(ccontact);
}
return nodeList.Count;
}
AddContact 方法将 Employee 对象添加到静态列表中;但是,该行:
this.AddContact(ccontact);
没有被执行。
XML 文件的示例:
<?xml version="1.0" encoding="utf-8"?>
<people>
<person>
<Employee>123456789</Employee>
<FirstName>John</FirstName>
<LastName>Smith</LastName>
</person>
<person>
<Employee>987654321</Employee>
<FirstName>Ellen</FirstName>
<LastName>Wayne</LastName>
</person>
</people>
我曾尝试设置断点和调试,果然,该行被完全跳过,就好像它甚至不存在一样。
根据 Alan 的建议,我更改了 PersonTag.FirstChild.Value,因为它试图引用一个不存在的 ChildNode。
更新的工作方法:
private int ReadInPeople()
{
XmlNodeList nodeList = m_xmlDoc.DocumentElement.ChildNodes;
foreach (XmlNode PersonNode in nodeList)
{
Employee ccontact = new Employee();
foreach (XmlNode PersonTag in PersonNode.ChildNodes)
{
switch (PersonTag.Name)
{
case "Employee":
ccontact.EmployeeNumber = PersonTag.InnerText;
break;
case "FirstName":
ccontact.FirstName = PersonTag.InnerText;
break;
case "LastName":
ccontact.LastName = PersonTag.InnerText;
break;
default:
break;
}
}
this.AddContact(ccontact);
}
return nodeList.Count;
}