using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"%%\w+%%";
string input = @"%%HELLO_WOLD%%
%HELLO_WOLD%
%%HELLO_WOLD
HELLO_WOLD%%
Test %%HELLO_WOLD%% test
Test %%HELLO_WOLD%%
%%HELLO_WOLD%% test
Test %%%HELLO_WOLD%%% test Test %%%HELLO_WOLD%%% test
Test %%%%%%%%%%%HELLO_WOLD%%%% test
Test %%%%%%%%%%%%HELLO_WOLD%%%%% test
%%%HELLO_WOLD%% test
%HELLO_WOLD% test
test %%%HELLO_WOLD%% test
test %%%HELLO_WOLD%% test
%%%HELLO_WOLD%%
";
RegexOptions options = RegexOptions.Multiline;
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