using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?s)\bgood(?!.*?good.*?bad).*?\bbad.*?\bgood";
string input = @"^(?=.*?\bmust-have\b)(?=.*?\bmandatory\b)((?!avoid|illegal).)*$
good 1 dfd
kjkkjdf
good 2 qdqsd
jkfkjg
skdlsk
good 3 ggrfdfdfd
dfklfd
dfkl
random length
with multiple lines
bad 4 sdjqklj random length
sd4s54 multiple lines
good 5 mlp
sldsklds
ba";
RegexOptions options = RegexOptions.CultureInvariant;
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