c# - randomly Select XML nodes with same names -

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i have xml file:

<main> <qa>     <question>what favorite color?</question>     <!--pick random!-->     <answer>blue</answer>     <answer>red</answer>     <answer>green</answer>     <answer>yellow</answer> </qa>  <qa>     <question>what favorite programming language?</question>     <!--pick random!-->     <answer>php</answer>     <answer>c#</answer>     <answer>java</answer>     <answer>vb.net</answer> </qa>

i want when user enter 1 of question specified in above xml file, program pick random answer nodes. example when user enters "what favorite programming language?" in textbox, program must generate php,c#,java or vb.net randomly.

this code not correct:

xmldocument xml = new xmldocument(); xml.load("qa.xml");  xmlnodelist xlist = xml.selectnodes("main/qa"); foreach (xmlnode xn in xlist) {     string question = xn["question"].innertext;     if (question == txtquestion.text)     {         xmlnodelist answerlist = xml.selectnodes("main/qa/answer");         foreach (xmlnode ans in answerlist)         {             console.writeline(ans.innertext);         }     } }

output:

blue red green yellow php c# java vb.net

please help.

try this:

xmldocument xml = new xmldocument(); xml.load("qa.xml");  xmlnodelist xlist = xml.selectnodes("main/qa"); foreach (xmlnode xn in xlist) {     string question = xn["question"].innertext;     if (question == txtquestion.text)     {         xmlnodelist answerlist = xn.selectnodes("./answer");         foreach (xmlnode ans in answerlist             .cast<xmlnode>()             .orderby(elem => guid.newguid()))         {             console.writeline(ans.innertext);         }     } }

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