using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?><STARTTAG1>(?<text1>.*?)<ENDTAG1>)(?:(?!<STARTTAG1>).)*?<STARTTAG2>(?<text2>.*?)<ENDTAG2>";
string input = @"Some random text here <STARTTAG1>text to match<ENDTAG1> some more
random text <STARTTAG2>text to match<ENDTAG2> more random text
Some random text here <STARTTAG1>I don't want this text to match<ENDTAG1> some more
random text more random text
Some random text here <STARTTAG1>text to match<ENDTAG1> some more
random text <STARTTAG2>text to match<ENDTAG2> more random text ";
RegexOptions options = RegexOptions.Singleline;
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