using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^[a-z](?:[a-z\d]|[a-z\d]\-)*[a-z\d]+$";
string input = @"ab9cd-a9bc-abbbc95
ab9cd-a9bc-abbbc-asdfasd-asdf-2323324vc-95
5abcd
abbcd-fsjs-g-e-wa-q
-abcd
abcd--abcd";
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