using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(1|0[1-9]0|0[0-9][1-9]|[1-9][0-9][0-9])$";
string input = @"<--! select 1 or 001..999 sequences -->
0
1
9
00
09
10
99
000
001
002
004
010
011
021
100
101
110
115
120
125
127
135
139
141
201
222
230
245
247
250
254 sgnlfsf
2340
345
255
853
999";
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