using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?i)VITA?MIN\s*C##.*?##[0-9]+ days";
string input = @"1. As VITMINC##1-0-1##1 days.As
2. amlodipine ##vitamin c##diclo##tabramycin eye drop##metformin##0-0-1##15 days. amlodipine ##1-0-1## 3 days.
3. Xylometazoline(P) Nasal drops##0-1-0##2 days. Paracetamol 500mg tab##0.5-0-0-0##2 days. VITMINC##0.5-0-0##2 days. Chlorpheniramine maleate 4mg tab##0-1-0##2 days.
4. VITMINC##0-0-0-1##2 days.
5. amlodipine##vitamin c##diclo##tabramycin eye drop##metformin##0-0-1##15 days.";
RegexOptions options = RegexOptions.IgnoreCase;
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