using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\b(?!.{0,7}[DFIOQU])[A-VXY]\d[A-Z][^-\w\d]\d[A-Z]\d\b";
string input = @"Valid
123 4th Street, Toronto, Ontario, M1A 1A1
12456 Pine Way, Montreal, Quebec H9Z 9Z9
Invalid
123 4th Street, Toronto, Ontario, Q1A 1A1
12456 Pine Way, Montreal, Quebec H9Z-9Z9
56 Winding Way, Thunder Bay, Ontario, D56 4A3
34 Cliff Drive, Bishop's Falls, Newfoundland B7E 4T
123 4th Street, Toronto, Ontario, M1A 1Q1";
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