using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^\d*$|^(?:\d{1,3}(?:\.\d{3})*(?:,\d{1,5})?)$|^(?:\d{1,3}(?:,\d{3})*(?:\.\d{1,5})?)$|^(?:\d{1,3}(?: \d{3})*(?:[,.]\d{1,5})?)$";
string input = @"123
1.234.567
12.345.678
123.456.789
1.234.567,89
1.234,56789
1,2
0,123
1,234,567
12,345,678
123,456,789
1,234,567.89
1,234.56789
1.2
0.123
1 234 567
12 345 678
123 456 789
1 234 567,89
1 234 567.89
1 234,56789
1 234.56789";
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