using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^\d+(?:,\d+)*(?:\.\d|\.\d\d)?$";
string input = @"1
1.0
1.00
100.00
1,000.00
1000.00
111,000.00
111000.00
999,999,999.00
999,999,999,999.00
,1.00
1.
1,,00.00
1.000";
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