C# 读取XML中的相邻元素
我有一个很大的XML文件,所以我使用XMLTextReader。我在读取值时遇到问题,因为格式与我使用过的其他XML文件有点不同C# 读取XML中的相邻元素,c#,xml,xmltextreader,C#,Xml,Xmltextreader,我有一个很大的XML文件,所以我使用XMLTextReader。我在读取值时遇到问题,因为格式与我使用过的其他XML文件有点不同 <class> <column>Size</column><int>30</int> <column>TeamColor</column><string>red</string> ... </class> 如果可以使用xpath,
<class>
<column>Size</column><int>30</int>
<column>TeamColor</column><string>red</string>
...
</class>
如果可以使用xpath,请从
上下文节点尝试(以下同级::*)[1]
。这将沿以下同级轴选择元素(与上下文对等但按文档顺序排列的内容),然后返回序列的第一个元素。您可以在哈希表中获得所有列及其名称和关联值
请尝试使用以下代码段:
Hashtable hashTable = new Hashtable();
int intVal;
string prevColumnName = "";
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
element = reader.Name;
}
else if (reader.NodeType == XmlNodeType.Text)
{
switch (element.ToLower())
{
case "column":
prevColumnName = reader.Value;
hashTable.Add(reader.Value, null);
break;
case "int":
if (int.TryParse(reader.Value, out intVal))
hashTable[prevColumnName] = intVal;
break;
case "string":
hashTable[prevColumnName] = reader.Value;
break;
}
}
}
用法:
int size = Convert.ToInt32(hashTable["Size"]);
除非存储上一个值,否则需要添加一个跳过条件,允许在它命中column元素时进行额外读取(对于同级),然后在下一个循环中正确处理任何额外读取
bool skipRead = false;
while (skipRead || reader.Read())
{
skipRead = false;
if (reader.NodeType == XmlNodeType.Element)
element = reader.Name;
else if (reader.NodeType == XmlNodeType.Text)
{
if (element == "column")
{
if (Reader.Read())
{
if(reader.NodeType == XmlNodeType.Element && reader.Name == "Size")
{
// do whatever you need to here with reader.Value.
// E.g size = (int) reader.Value
skipRead = false;
continue;
} // Additional ifs for other elements in column can go here.
else
{
skipRead = true;
continue;
}
}
else
{
break;
}
}
}
}
bool skipRead = false;
while (skipRead || reader.Read())
{
skipRead = false;
if (reader.NodeType == XmlNodeType.Element)
element = reader.Name;
else if (reader.NodeType == XmlNodeType.Text)
{
if (element == "column")
{
if (Reader.Read())
{
if(reader.NodeType == XmlNodeType.Element && reader.Name == "Size")
{
// do whatever you need to here with reader.Value.
// E.g size = (int) reader.Value
skipRead = false;
continue;
} // Additional ifs for other elements in column can go here.
else
{
skipRead = true;
continue;
}
}
else
{
break;
}
}
}
}