using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(((\.\d+)|(0+((e|E)\d+)?)|(0+\.\d*((e|E)-\d+)?)|((1|1\.0*)((e|E)-\d+)?)|(1\.\d+((e|E)-[1-9]\d*)))(\s+|,\s*)){3}((\.\d+)|(0+((e|E)\d+)?)|(0+\.\d*((e|E)-\d+)?)|((1|1\.0*)((e|E)-\d+)?)|(1\.\d+((e|E)-[1-9]\d*)))$(
# just a way to comment
# The ^$ anchors are there because xml always assumes them.
# They are required here for proper testing.
)*";
string input = @"1 1 1 1";
RegexOptions options = RegexOptions.Multiline;
Match m = Regex.Match(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