c# - search multiple words and expressions in a flowdocument wpf -


i'm working on textanalysis tool , love loop through whole text multiple searchexpressions @ same time. right approach? code have 1 search word.

        string search = "findme" ;          textpointer text = rtfmain.document.contentstart;          (textpointer position = rtfmain.document.contentstart;         position != null && position.compareto(rtfmain.document.contentend) <= 0;         position = position.getnextcontextposition(logicaldirection.forward))         {             if (position.compareto(rtfmain.document.contentend) == 0)             {                 break;             }              string textrun = position.gettextinrun(logicaldirection.forward);             stringcomparison stringcomparison = stringcomparison.currentculture;             int32 indexinrun = textrun.indexof(search, stringcomparison);              if (indexinrun >= 0)             {                 position = position.getpositionatoffset(indexinrun);                 if (position != null)                 {                     textpointer nextpointer = position.getpositionatoffset(search.length);                      textrange textrange = new textrange(position, nextpointer);                     textrange.applypropertyvalue(textelement.backgroundproperty,                                   new solidcolorbrush(colors.yellow));                     resultlist.add(textrange.text);                 }             }         }

what's right approach this? when 1 word has done searching text, need automatically move next word , loop through text again. make list or fill array search words? can guide me in right direction? help.

it time-taking, unproductive search strings without regular expressions.

use regular expressions. powerful tool. start read article - "search strings using regular expressions" - https://msdn.microsoft.com/en-gb/library/ms228595.aspx


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