c# - Regular expression to find all words which starts with white space and ends with white space -


i need find words in string starting , ending white space. finding issues while searching white spaces. however, achieve below. starts , ends @@. whitespaces great.

string input = "@@12@@ @@13@@";              foreach (match match in regex.matches(input, @"@@\b\s+?\b@@"))                 {    messagebox.show(match.groups[1].value); }

from msdn doc:

// define regular expression repeated words.     regex rx = new regex(@"\b(?<word>\w+)\s+(\k<word>)\b",       regexoptions.compiled | regexoptions.ignorecase);

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