XPATH preceding node












0














I have following XML:



XML



 <PatientDetailsXML>             
<PList>
<PName type="Patient"> // node [i] = 0
<properties>
<Room bedType="Auto" />
<PName title="Joe Beom" PId="1234">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>
<PName type="Patient"> // node[i] =1
<properties>
<Room bedType="Auto" />
<PName title="John Bair" PId="4567">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="2" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>

<PName type="Patient"> // node[i] = 2
<properties>
<Room bedType="Auto" />
<PName title="Bairstow" PId="1234">
<Details>
<classification classification="paymenttype" category="CreditCard" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Vegetables" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>


When I'm at node[0], i'm doing a search for classification='paymenttype' and category ='CreditCard', I find the 3rd item node[i] = 2



  var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='paymenttype'and @category ='CreditCard'] /ancestor::PName/@title");  // This gives me the title `Bairstow`


Now I need to jump to my previous node where classification='paymenttype'and @category ='CreditCard'.



var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event"); 
// this doesn't seem to work


CODE



var query = @"//PList/PName[.//PName/classifications/classification[@classification='paymenttype' and @category='Wallet']]";
var nodes = docs.SelectNodes(query).OfType<XmlNode>().ToArray();
XmlNodeList nodeList = docs.SelectNodes(query);


for (int i = 0; i < nodes.Count(); i++)
{

//do something
//jump to method to do something else

string testPayment = Externals.Next(nodes[i]);

}

public static string Next(XMLNode currNode)
{
var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='Humor'and @category ='1'] /ancestor::PName/@title");
// This gives me the title `Bairstow`

// Now I need to select the title of the previous node e.g.John Bair

var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event");
// this is not pointing to the node with title JohnBair

}









share|improve this question






















  • Just select under currNode, not next.
    – montonero
    yesterday










  • no that doesn't work. I need to jump from the next to the previous. because I have already moved out from the currNode by doing a search in next. Now my aim is to move back from the next
    – user726720
    yesterday










  • It's not quite so. currNode is not modified when you do SelectSingleNode. You can do any number of selections from this one node and it still be there.
    – montonero
    yesterday












  • I have tried this already and when I do a preceding it goes back to node[0]. It seems like when I call Externals.Next(nodes[i]), it only exposes node[I] to the method Next. And not all nodes. That's why when I do preceding it goes back to node[0].
    – user726720
    yesterday










  • I tried also a .PreviousSibling. It returns me to the same node[0].
    – user726720
    yesterday
















0














I have following XML:



XML



 <PatientDetailsXML>             
<PList>
<PName type="Patient"> // node [i] = 0
<properties>
<Room bedType="Auto" />
<PName title="Joe Beom" PId="1234">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>
<PName type="Patient"> // node[i] =1
<properties>
<Room bedType="Auto" />
<PName title="John Bair" PId="4567">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="2" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>

<PName type="Patient"> // node[i] = 2
<properties>
<Room bedType="Auto" />
<PName title="Bairstow" PId="1234">
<Details>
<classification classification="paymenttype" category="CreditCard" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Vegetables" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>


When I'm at node[0], i'm doing a search for classification='paymenttype' and category ='CreditCard', I find the 3rd item node[i] = 2



  var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='paymenttype'and @category ='CreditCard'] /ancestor::PName/@title");  // This gives me the title `Bairstow`


Now I need to jump to my previous node where classification='paymenttype'and @category ='CreditCard'.



var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event"); 
// this doesn't seem to work


CODE



var query = @"//PList/PName[.//PName/classifications/classification[@classification='paymenttype' and @category='Wallet']]";
var nodes = docs.SelectNodes(query).OfType<XmlNode>().ToArray();
XmlNodeList nodeList = docs.SelectNodes(query);


for (int i = 0; i < nodes.Count(); i++)
{

//do something
//jump to method to do something else

string testPayment = Externals.Next(nodes[i]);

}

public static string Next(XMLNode currNode)
{
var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='Humor'and @category ='1'] /ancestor::PName/@title");
// This gives me the title `Bairstow`

// Now I need to select the title of the previous node e.g.John Bair

var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event");
// this is not pointing to the node with title JohnBair

}









share|improve this question






















  • Just select under currNode, not next.
    – montonero
    yesterday










  • no that doesn't work. I need to jump from the next to the previous. because I have already moved out from the currNode by doing a search in next. Now my aim is to move back from the next
    – user726720
    yesterday










  • It's not quite so. currNode is not modified when you do SelectSingleNode. You can do any number of selections from this one node and it still be there.
    – montonero
    yesterday












  • I have tried this already and when I do a preceding it goes back to node[0]. It seems like when I call Externals.Next(nodes[i]), it only exposes node[I] to the method Next. And not all nodes. That's why when I do preceding it goes back to node[0].
    – user726720
    yesterday










  • I tried also a .PreviousSibling. It returns me to the same node[0].
    – user726720
    yesterday














0












0








0







I have following XML:



XML



 <PatientDetailsXML>             
<PList>
<PName type="Patient"> // node [i] = 0
<properties>
<Room bedType="Auto" />
<PName title="Joe Beom" PId="1234">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>
<PName type="Patient"> // node[i] =1
<properties>
<Room bedType="Auto" />
<PName title="John Bair" PId="4567">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="2" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>

<PName type="Patient"> // node[i] = 2
<properties>
<Room bedType="Auto" />
<PName title="Bairstow" PId="1234">
<Details>
<classification classification="paymenttype" category="CreditCard" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Vegetables" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>


When I'm at node[0], i'm doing a search for classification='paymenttype' and category ='CreditCard', I find the 3rd item node[i] = 2



  var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='paymenttype'and @category ='CreditCard'] /ancestor::PName/@title");  // This gives me the title `Bairstow`


Now I need to jump to my previous node where classification='paymenttype'and @category ='CreditCard'.



var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event"); 
// this doesn't seem to work


CODE



var query = @"//PList/PName[.//PName/classifications/classification[@classification='paymenttype' and @category='Wallet']]";
var nodes = docs.SelectNodes(query).OfType<XmlNode>().ToArray();
XmlNodeList nodeList = docs.SelectNodes(query);


for (int i = 0; i < nodes.Count(); i++)
{

//do something
//jump to method to do something else

string testPayment = Externals.Next(nodes[i]);

}

public static string Next(XMLNode currNode)
{
var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='Humor'and @category ='1'] /ancestor::PName/@title");
// This gives me the title `Bairstow`

// Now I need to select the title of the previous node e.g.John Bair

var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event");
// this is not pointing to the node with title JohnBair

}









share|improve this question













I have following XML:



XML



 <PatientDetailsXML>             
<PList>
<PName type="Patient"> // node [i] = 0
<properties>
<Room bedType="Auto" />
<PName title="Joe Beom" PId="1234">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>
<PName type="Patient"> // node[i] =1
<properties>
<Room bedType="Auto" />
<PName title="John Bair" PId="4567">
<Details>
<classification classification="paymenttype" category="Wallet" />
<classification classification="Humor" category="2" />
<classification classification="Food" category="Fruit" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>

<PName type="Patient"> // node[i] = 2
<properties>
<Room bedType="Auto" />
<PName title="Bairstow" PId="1234">
<Details>
<classification classification="paymenttype" category="CreditCard" />
<classification classification="Humor" category="1" />
<classification classification="Food" category="Vegetables" />
</Details>
</PName>
</properties>
<childEvents>
</childEvents>
</PName>


When I'm at node[0], i'm doing a search for classification='paymenttype' and category ='CreditCard', I find the 3rd item node[i] = 2



  var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='paymenttype'and @category ='CreditCard'] /ancestor::PName/@title");  // This gives me the title `Bairstow`


Now I need to jump to my previous node where classification='paymenttype'and @category ='CreditCard'.



var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event"); 
// this doesn't seem to work


CODE



var query = @"//PList/PName[.//PName/classifications/classification[@classification='paymenttype' and @category='Wallet']]";
var nodes = docs.SelectNodes(query).OfType<XmlNode>().ToArray();
XmlNodeList nodeList = docs.SelectNodes(query);


for (int i = 0; i < nodes.Count(); i++)
{

//do something
//jump to method to do something else

string testPayment = Externals.Next(nodes[i]);

}

public static string Next(XMLNode currNode)
{
var next = currNode.SelectSingleNode(@"following::classifications/classification[@classification='Humor'and @category ='1'] /ancestor::PName/@title");
// This gives me the title `Bairstow`

// Now I need to select the title of the previous node e.g.John Bair

var previous = next.SelectSingleNode(@"preceding::classifications/classification[@classification='paymenttype'and @category ='CreditCard']/ancestor::event");
// this is not pointing to the node with title JohnBair

}






c# xpath






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked yesterday









user726720

41821039




41821039












  • Just select under currNode, not next.
    – montonero
    yesterday










  • no that doesn't work. I need to jump from the next to the previous. because I have already moved out from the currNode by doing a search in next. Now my aim is to move back from the next
    – user726720
    yesterday










  • It's not quite so. currNode is not modified when you do SelectSingleNode. You can do any number of selections from this one node and it still be there.
    – montonero
    yesterday












  • I have tried this already and when I do a preceding it goes back to node[0]. It seems like when I call Externals.Next(nodes[i]), it only exposes node[I] to the method Next. And not all nodes. That's why when I do preceding it goes back to node[0].
    – user726720
    yesterday










  • I tried also a .PreviousSibling. It returns me to the same node[0].
    – user726720
    yesterday


















  • Just select under currNode, not next.
    – montonero
    yesterday










  • no that doesn't work. I need to jump from the next to the previous. because I have already moved out from the currNode by doing a search in next. Now my aim is to move back from the next
    – user726720
    yesterday










  • It's not quite so. currNode is not modified when you do SelectSingleNode. You can do any number of selections from this one node and it still be there.
    – montonero
    yesterday












  • I have tried this already and when I do a preceding it goes back to node[0]. It seems like when I call Externals.Next(nodes[i]), it only exposes node[I] to the method Next. And not all nodes. That's why when I do preceding it goes back to node[0].
    – user726720
    yesterday










  • I tried also a .PreviousSibling. It returns me to the same node[0].
    – user726720
    yesterday
















Just select under currNode, not next.
– montonero
yesterday




Just select under currNode, not next.
– montonero
yesterday












no that doesn't work. I need to jump from the next to the previous. because I have already moved out from the currNode by doing a search in next. Now my aim is to move back from the next
– user726720
yesterday




no that doesn't work. I need to jump from the next to the previous. because I have already moved out from the currNode by doing a search in next. Now my aim is to move back from the next
– user726720
yesterday












It's not quite so. currNode is not modified when you do SelectSingleNode. You can do any number of selections from this one node and it still be there.
– montonero
yesterday






It's not quite so. currNode is not modified when you do SelectSingleNode. You can do any number of selections from this one node and it still be there.
– montonero
yesterday














I have tried this already and when I do a preceding it goes back to node[0]. It seems like when I call Externals.Next(nodes[i]), it only exposes node[I] to the method Next. And not all nodes. That's why when I do preceding it goes back to node[0].
– user726720
yesterday




I have tried this already and when I do a preceding it goes back to node[0]. It seems like when I call Externals.Next(nodes[i]), it only exposes node[I] to the method Next. And not all nodes. That's why when I do preceding it goes back to node[0].
– user726720
yesterday












I tried also a .PreviousSibling. It returns me to the same node[0].
– user726720
yesterday




I tried also a .PreviousSibling. It returns me to the same node[0].
– user726720
yesterday

















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