c# - Remove Duplicate XML Records -


i wanted remove duplicate records in xml far unable unsure of how can go doing this, here xml , can see there 4 duplicate records. want remove itemgrp node due having same rateclass element in itemgrp node

<?xml version="1.0" encoding="utf-8" ?> <fare_1 xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">   <fare_1_details xmlns="http://xml.someplace">     <itemgrp>       <itemnb>         <itemnumberdetails>           <number>01</number>         </itemnumberdetails>       </itemnb>       <farequalifitem>         <additionalfaredetails>           <rateclass>dt21p</rateclass>         </additionalfaredetails>         <discountdetails>           <farequalifier>725</farequalifier>         </discountdetails>       </farequalifitem>     </itemgrp>     <itemgrp>       <itemnb>         <itemnumberdetails>           <number>02</number>         </itemnumberdetails>       </itemnb>       <farequalifitem>         <additionalfaredetails>           <rateclass>dt21p</rateclass>         </additionalfaredetails>         <discountdetails>           <farequalifier>725</farequalifier>         </discountdetails>       </farequalifitem>     </itemgrp>     <itemgrp>       <itemnb>         <itemnumberdetails>           <number>03</number>         </itemnumberdetails>       </itemnb>       <farequalifitem>         <additionalfaredetails>           <rateclass>cv76j</rateclass>         </additionalfaredetails>         <discountdetails>           <farequalifier>352</farequalifier>         </discountdetails>       </farequalifitem>     </itemgrp>   </fare_1_details>   <fare_1_details xmlns="http://xml.someplace">     <itemgrp>       <itemnb>         <itemnumberdetails>           <number>01</number>         </itemnumberdetails>       </itemnb>       <farequalifitem>         <additionalfaredetails>           <rateclass>th31l</rateclass>         </additionalfaredetails>         <discountdetails>           <farequalifier>722</farequalifier>         </discountdetails>       </farequalifitem>     </itemgrp>     <itemgrp>       <itemnb>         <itemnumberdetails>           <number>02</number>         </itemnumberdetails>       </itemnb>       <farequalifitem>         <additionalfaredetails>           <rateclass>gk51t</rateclass>         </additionalfaredetails>         <discountdetails>           <farequalifier>726</farequalifier>         </discountdetails>       </farequalifitem>     </itemgrp>     <itemgrp>       <itemnb>         <itemnumberdetails>           <number>03</number>         </itemnumberdetails>       </itemnb>       <farequalifitem>         <additionalfaredetails>           <rateclass>gk51t</rateclass>         </additionalfaredetails>         <discountdetails>           <farequalifier>726</farequalifier>         </discountdetails>       </farequalifitem>     </itemgrp>   </fare_1_details> </fare_1>

what tried far xmldocument:

nametable nt = new nametable(); xmlnamespacemanager m = new xmlnamespacemanager(nt); m.addnamespace("xsi", "http://www.w3.org/2001/xmlschema-instance"); m.addnamespace("a", "http://xml.someplace"); xmlnodelist nodes = xmltree.selectnodes("//fare_1/fare_1_details/itemgrp", m); xmlnode actionnode = xmltree.selectsinglenode("//fare_1"); (int = 1; < nodes.count; i++) {     actionnode.removechild(nodes[i]); }

i have been able come solution writing code:

string file = file.readalltext(appdomain.currentdomain.basedirectory + "xml.txt");             var xmldoc = new xmldocument();             xmldoc.loadxml(file);             var el = xmldoc.selectsinglenode("/fare_1");             var c = el.childnodes;             list<string> rateclassvalues = new list<string>();             foreach (xmlnode x in c)             {                foreach(xmlnode ch in x.childnodes)                {                    var rateclassvalue = ch.firstchild.nextsibling.firstchild.firstchild.innertext;                    if (!rateclassvalues.contains(rateclassvalue))                    {                        // add value list keep track of rate class values                        rateclassvalues.add(rateclassvalue);                    }                    else if (rateclassvalues.contains(rateclassvalue))                    {                        // delete duplicate itemgrp parent                        xmlnode parent = ch.parentnode;                        parent.removechild(ch);                    }                }             }              xmldoc.save(appdomain.currentdomain.basedirectory + "xmlnew.txt");

this code removes itemgrp has duplicate rateclass innertext. running code gives result:

<?xml version="1.0" encoding="utf-8"?> <fare_1 xmlns:xsi="http://www.w3.org/2001/xmlschema-instance">    <fare_1_details xmlns="http://xml.someplace">       <itemgrp>          <itemnb>             <itemnumberdetails>                <number>01</number>             </itemnumberdetails>          </itemnb>          <farequalifitem>             <additionalfaredetails>                <rateclass>dt21p</rateclass>             </additionalfaredetails>             <discountdetails>                <farequalifier>725</farequalifier>             </discountdetails>          </farequalifitem>       </itemgrp>       <itemgrp>          <itemnb>             <itemnumberdetails>                <number>03</number>             </itemnumberdetails>          </itemnb>          <farequalifitem>             <additionalfaredetails>                <rateclass>cv76j</rateclass>             </additionalfaredetails>             <discountdetails>                <farequalifier>352</farequalifier>             </discountdetails>          </farequalifitem>       </itemgrp>    </fare_1_details>    <fare_1_details xmlns="http://xml.someplace">       <itemgrp>          <itemnb>             <itemnumberdetails>                <number>01</number>             </itemnumberdetails>          </itemnb>          <farequalifitem>             <additionalfaredetails>                <rateclass>th31l</rateclass>             </additionalfaredetails>             <discountdetails>                <farequalifier>722</farequalifier>             </discountdetails>          </farequalifitem>       </itemgrp>       <itemgrp>          <itemnb>             <itemnumberdetails>                <number>02</number>             </itemnumberdetails>          </itemnb>          <farequalifitem>             <additionalfaredetails>                <rateclass>gk51t</rateclass>             </additionalfaredetails>             <discountdetails>                <farequalifier>726</farequalifier>             </discountdetails>          </farequalifitem>       </itemgrp>    </fare_1_details> </fare_1>

i hope able hit nail on head. cheers!


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