using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"[A-HJ-NP-TV-Z]{2}[\s-]{0,1}[0-9]{3}[\s-]{0,1}[A-HJ-NP-TV-Z]{2}|[0-9]{2,4}[\s-]{0,1}[A-Z]{1,3}[\s-]{0,1}[0-9]{2}";
string input = @"## OLD FROMAT (complete) ##
3123 AA 11
3123-AA-11
3123AA11
8987 VG 33
8987VG33
## OLD FORMAT (with few characters) ##
31 F 11
## NEW FORMAT ##
AA 123 BB
AA-222-BB
DD345EE
AO 123 BB // O is excluded
AI-123-BB // I is excluded
AU123BB // U is exclided
AZ 123 BI
AZ-123-BU
AZ123BO";
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