using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?:(?:[1-4](?:\.\d{1,3})?)|(?:5(?:\.0{1,3})?)|(?:0\.(?:(?:(?:[1-9]\d{0,2}))|(?:0[1-9]\d?)|(?:00[1-9]))))$";
string input = @"5.000
4.891
0.001
0.9
2.1
3
0.111
0.000
0
5.101
6
4.1011";
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