如何通过索引获取xpath以动态更新XML文件C＃ [英] How to get xpath with indexing to update XML file dynamically C#
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问题描述
<？xml version =1.0encoding =UTF-8？>
< breakfast_menu>
< food>
< name> Belgian Waffles
< price> $ 5.95
< description>
两个着名的比利时华夫饼干，含有大量真正的枫糖浆
< calories> 650
< food>
< name> Strawberry Belgian Waffles
< price> $ 7.95
< description>
轻薄比利时华夫饼配草莓和生奶油
< calories> 900
< food>
< name> Berry-Berry比利时华夫饼干
< price> $ 8.95
< description>
比利时华夫饼配上各种新鲜浆果和鲜奶油
< calories> 900
我的输出
比利时华夫饼我的xPath ==breakfast_menu / food / name
草莓比利时华夫饼我的xPath ==breakfast_menu / food / name
Berry-Berry比利时华夫饼我的xPath ==breakfast_menu / food / name
但我希望输出像
Belgian Waffles my xPath == breakfast_menu / food [1] / name
Strawberry Belgian Waffles my xPath ==breakfast_menu / food [2] / name
Berry-Berry比利时华夫饼我的xPath ==breakfast_menu / food [3] / name
我尝试过：
using（XmlReader reader = XmlReader.Create（pathMain））
{
XmlNode nodeTemp;
var elements = new Stack< string>（）;
var pathX = string.Empty;
var pathXTemp = string.Empty;
string prevNodeType = string.Empty;
string currNodeType = string.Empty;
while（reader.Read（））
{
string dg = string.Empty;
if（！reader.IsEmptyElement == true）
{
currNodeType = reader.Name.ToString（）;
if（（reader.NodeType.ToString（）==EndElement）||（prevNodeType！= currNodeType））
{
indx = 1;
}
switch（reader.NodeType）
{
case XmlNodeType.Element：
elements.Push（reader.LocalName）;
addtoStackPanel（reader.Name，reader.Value，pathMain，pathX，0）;
休息;
case XmlNodeType.Text：
if（（reader.Value！=）&&（reader.Name！=style））
{
pathX = string.Join（/，elements.Reverse（））;
addtoStackPanel（reader.Name，reader.Value，pathMain，pathX，0）;
// prevNodeType = reader.Name.ToString（）;
休息;
}
其他
{
休息;
}
case XmlNodeType.EndElement：
elements.Pop（）;
休息;
}
}
}
}
解决方案
< blockquote> 5.95
< description>
两个着名的比利时华夫饼干，含有大量真正的枫糖浆
< calories> 650
< food>
< name> Strawberry Belgian Waffles
< price>
7.95
< description>
轻薄比利时华夫饼配草莓和生奶油
< calories> 900
< food>
< name> Berry-Berry比利时华夫饼干
< price>
8.95
< description>
比利时华夫饼配上各种新鲜浆果和鲜奶油
< calories> 900
我的输出比利时华夫饼我的xPath ==breakfast_menu / food / name
草莓比利时华夫饼我的xPath ==breakfast_menu / food / name
Berry-Berry比利时华夫饼我的xPath ==breakfast_menu / food / name
但我希望输出像Belgian Waffles my xPath == breakfast_menu / food [1] / name
Strawberry Belgian Waffles my xPath ==breakfast_menu / food [2] / name
Berry-Berry比利时华夫饼我的xPath ==breakfast_menu / food [3] / name
我尝试过：
using（XmlReader reader = XmlReader.Create（pathMain））
{
XmlNode nodeTemp;
var elements = new Stack< string>（）;
var pathX = string.Empty;
var pathXTemp = string.Empty;
string prevNodeType = string.Empty;
string currNodeType = string.Empty;
while（reader.Read（））
{
string dg = string.Empty;
if（！reader.IsEmptyElement == true）
{
currNodeType = reader.Name.ToString（）;
if（（reader.NodeType.ToString（）==EndElement）||（prevNodeType！= currNodeType））
{
indx = 1;
}
switch（reader.NodeType）
{
case XmlNodeType.Element：
elements.Push（reader.LocalName）;
addtoStackPanel（reader.Name，reader.Value，pathMain，pathX，0）;
休息;
case XmlNodeType.Text：
if（（reader.Value！=）&&（reader.Name！=style））
{
pathX = string.Join（/，elements.Reverse（））;
addtoStackPanel（reader.Name，reader.Value，pathMain，pathX，0）;
// prevNodeType = reader.Name.ToString（）;
休息;
}
其他
{
休息;
}
case XmlNodeType.EndElement：
elements.Pop（）;
休息;
}
}
}
}
<?xml version="1.0" encoding="UTF-8"?>
<breakfast_menu>
<food>
<name>Belgian Waffles
<price>$5.95
<description>
Two of our famous Belgian Waffles with plenty of real maple syrup
<calories>650
<food>
<name>Strawberry Belgian Waffles
<price>$7.95
<description>
Light Belgian waffles covered with strawberries and whipped cream
<calories>900
<food>
<name>Berry-Berry Belgian Waffles
<price>$8.95
<description>
Belgian waffles covered with assorted fresh berries and whipped cream
<calories>900
my output
Belgian Waffles my xPath== "breakfast_menu/food/name" Strawberry Belgian Waffles my xPath== "breakfast_menu/food/name" Berry-Berry Belgian Waffles my xPath== "breakfast_menu/food/name"
but i want output like
Belgian Waffles my xPath== "breakfast_menu/food[1]/name" Strawberry Belgian Waffles my xPath== "breakfast_menu/food[2]/name" Berry-Berry Belgian Waffles my xPath== "breakfast_menu/food[3]/name"
What I have tried:
using (XmlReader reader = XmlReader.Create(pathMain))
{
XmlNode nodeTemp;
var elements = new Stack<string>();
var pathX = string.Empty;
var pathXTemp = string.Empty;
string prevNodeType = string.Empty;
string currNodeType = string.Empty;
while (reader.Read())
{
string dg = string.Empty;
if (!reader.IsEmptyElement == true)
{
currNodeType = reader.Name.ToString();
if ((reader.NodeType.ToString() == "EndElement") || (prevNodeType != currNodeType))
{
indx = 1;
}
switch (reader.NodeType)
{
case XmlNodeType.Element:
elements.Push(reader.LocalName);
addtoStackPanel(reader.Name, reader.Value, pathMain, pathX, 0);
break;
case XmlNodeType.Text:
if ((reader.Value != "") && (reader.Name != "style"))
{
pathX = string.Join("/", elements.Reverse());
addtoStackPanel(reader.Name, reader.Value, pathMain, pathX, 0);
//prevNodeType = reader.Name.ToString();
break;
}
else
{
break;
}
case XmlNodeType.EndElement:
elements.Pop();
break;
}
}
}
} 解决方案
5.95 <description> Two of our famous Belgian Waffles with plenty of real maple syrup <calories>650 <food> <name>Strawberry Belgian Waffles <price>
7.95 <description> Light Belgian waffles covered with strawberries and whipped cream <calories>900 <food> <name>Berry-Berry Belgian Waffles <price>
8.95 <description> Belgian waffles covered with assorted fresh berries and whipped cream <calories>900
my outputBelgian Waffles my xPath== "breakfast_menu/food/name" Strawberry Belgian Waffles my xPath== "breakfast_menu/food/name" Berry-Berry Belgian Waffles my xPath== "breakfast_menu/food/name"
but i want output likeBelgian Waffles my xPath== "breakfast_menu/food[1]/name" Strawberry Belgian Waffles my xPath== "breakfast_menu/food[2]/name" Berry-Berry Belgian Waffles my xPath== "breakfast_menu/food[3]/name"
What I have tried:
using (XmlReader reader = XmlReader.Create(pathMain)) { XmlNode nodeTemp; var elements = new Stack<string>(); var pathX = string.Empty; var pathXTemp = string.Empty; string prevNodeType = string.Empty; string currNodeType = string.Empty; while (reader.Read()) { string dg = string.Empty; if (!reader.IsEmptyElement == true) { currNodeType = reader.Name.ToString(); if ((reader.NodeType.ToString() == "EndElement") || (prevNodeType != currNodeType)) { indx = 1; } switch (reader.NodeType) { case XmlNodeType.Element: elements.Push(reader.LocalName); addtoStackPanel(reader.Name, reader.Value, pathMain, pathX, 0); break; case XmlNodeType.Text: if ((reader.Value != "") && (reader.Name != "style")) { pathX = string.Join("/", elements.Reverse()); addtoStackPanel(reader.Name, reader.Value, pathMain, pathX, 0); //prevNodeType = reader.Name.ToString(); break; } else { break; } case XmlNodeType.EndElement: elements.Pop(); break; } } } }
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