c# - Update xml node data, how -

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• how can single node data using linq 5 answers

i'd make update xml node data, have following xml node

<categories>   <category>     <id>1</id>     <name>computer</name>     <description>information tech.</description>     <active>false</active>   </category>   <category>     <id>2</id>     <name>cate1</name>     <description>mmukh</description>     <active>true</active>   </category> </categories> 

for example category id=1, , fetch data textboxes. how can save changes node.

thanks alot.

try solution,

string xml = @"<categories>                 <category>                 <id>1</id>                 <name>computer</name>                 <description>information tech.</description>                 <active>false</active>                 </category>                 <category>                 <id>2</id>                 <name>cate1</name>                 <description>mmukh</description>                 <active>true</active>                 </category>             </categories>";  xdocument xdoc = xdocument.parse(xml); int id = 1;  var items = xdoc.xpathselectelement("//category[id=" + id + "]")             .elements()             .todictionary(e => e.name.localname, e => (string)e);  if (items != null) {     // display these fields text box     console.writeline(items["name"]);     console.writeline(items["description"]);     console.writeline(items["active"]); } 

you can use above code display data in textbox. , below code update existing xml updated data.

// updated value xml element - description string description = "computer 123";  var items1 = item in xdoc.descendants("category")                 item.element("id").value == id.tostring()                 select item;  foreach (xelement itemelement in items1) {     itemelement.setelementvalue("name", description); } xdoc.save("data.xml"); 

you can updated xml data in xdoc.