using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"[a-zA-Z]\d([a-zA-Z]|\d)(.([a-zA-Z]|\d){1,4})?";
string input = @"L89.141 – Pressure ulcer of left lower back, stage 1
L89.142 – Pressure ulcer of left lower back, stage 2
L89.143 – Pressure ulcer of left lower back, stage 3
L89.144 – Pressure ulcer of left lower back, stage 4
L89.149 – Pressure ulcer of left lower back, unspecified stage
L89.151 – Pressure ulcer of sacral region, stage 1
L89.152 – Pressure ulcer of sacral region, stage 2
A12.123a
123.1
B23
B12.
B12.321assdf
12B23.234a ds";
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