c# - Read then write html to xml file using linq xml and xml writer -

i reading value of element <content>text <br /> break</content> string , showing string in textbox. afterwards user can modify possibly additional html tags. upon using linq query exact node insert user-input spiky bracket <> html tags normalized <br />. how preseve html tags?

i read , tried solutions these questions failed apply use case: c# xml avoid html encode using xdocument

get html tags embedded in xml using linq

keep html tags in xml using linq xml

http://blogs.msdn.com/b/charlie/archive/2008/09/29/linq-farm-preserving-formats-with-linq-to-xml.aspx

this example of xml file:

<events>     <event id="0">         <content><br/></content>     </event> </events> 

how load , query:

xdocument xml; xmltextreader xtr = new xmltextreader(this.pathxml);  xtr.normalization = false; xml = xdocument.load(xtr, loadoptions.preservewhitespace); xtr.close();  var nodetoedit = xml.descendants("event").where(x => (string)x.attribute("id") == "0"); 

how manipulate xml file user input:

string userinput = "text <br /> break"; // read textbox control inside form foreach (var item in nodetoedit.elements()) {     if(item.name == "content")     {         item.value = userinput;     } } 

how save:

changesaveindent(xml, this.pathxml); public static void changesaveindent(xdocument x, string path) {     xmlwritersettings settings = new xmlwritersettings();     settings.indent = true;     // indent tab. can changed "    " or similar     settings.indentchars = "\t";      using (xmlwriter writer = xmltextwriter.create(path, settings))     {         x.save(writer);     } } 

my expected xml output file should this:

<events>     <event id="0">         <content>text <br /> break</content>     </event> </events> 

sorry long post..

replace this:

if(item.name == "content") {     item.value = userinput; } 

with this:

if(item.name == "content") {     item.replacewith(xelement.parse("<content>" + userinput + "</content>")); } 

just note user input have valid xml work. if not, you'd best off breaking out call xelement.parse try catch block or adding input unescaped cdata, so:

if (item.name == "content") {     item.value = "";     item.add(new xcdata(userinput)); } 

which produce xml looks this:

... <content><![cdata[text <br /> break]]></content> ...