using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"((^\d+((\s)\d+)*$)|(^\d+(,)\d+)*$)";
string input = @"123,455
123 456
12,45 67
12 34,56
1 2 3 4
1,2,3 4
123, 56
12 ,356
3 4 5,89";
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