using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?!aBc)[aA][bB][cC]";
string input = @"This should match:
ABC
ABc
AbC
Abc
aBC
abC
abc
Text with abc in it should also match. Even if it is within a word like in Barabc Obama.
This must not match:
aBc
cba
aaa
bbb
ccc
bac
ABBA";
foreach (Match m in Regex.Matches(input, pattern))
{
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