using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?<=Amount Due|Pay This Amount|Total Balance|Total Current Month’s Charges|Amount Now Due|Amount Due|Amount due on|Total Balance on)\s+(\w+)?\s?\$([\d.,]+)";
string input = @"Pay this amount $45.50
Pay this amount due Mar04 $56.67 → Does not work with current expression
Amount due $56.78 → works with current expression
Amount due on dec4 $76.45 → does not work with current expression
Total balance $76.45 → works with current expression
Total balance on apr3 $64.34";
RegexOptions options = RegexOptions.Multiline | 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