using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?<=^|\s)(?:0|-?[1-9]\d*|-?[1-9]\d{0,2}(?:,\d{3})+)(?=\s|$)";
string input = @"561,085
3,894,320
-59,099
1,000
1000
-1000
1
-1
0
-01
01393
01,300,00
-04,044";
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