using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?(DEFINE)
(?<u>[А-ЯЁ])
(?<l>[а-яё])
(?<b>
(?<=^)(?=[а-яёА-ЯЁ])
|
(?<=[а-яёА-ЯЁ])(?=$)
|
(?<=[^а-яёА-ЯЁ])(?=[а-яёА-ЯЁ])
|
(?<=[а-яёА-ЯЁ])(?=[^а-яёА-ЯЁ])
)
)
(?P>b)
(?:
(?P>l)+(?P>u)(?P>l)+
|
(?P>u)(?P>l)+
|
(?P>l)+(?P>u)
)
(?P>b)";
string input = @"Русское слово имЕющее роВНо ОДНу заглавнуЮ";
RegexOptions options = RegexOptions.CultureInvariant | RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx