using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?:\d{1,3}-\d{1,3}|\d{1,3})(?:, ?(?:\d{1,3}-\d{1,3}|\d{1,3}))*$";
string input = @"1-100,134,200
1,18,100
1, 18, 100
1, 18,100
1-,18,100
-2,18,100
1,,18,100
1, ,18,100
,2,18,100
1,18,100,";
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