using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?P<major>[1-9]+\d*)\.(?P<minor>[1-9]+\d*)\.(?P<patch>[1-9]+\d*)(?:-(?P<pre_release>(?:[A-Za-z1-9][A-Za-z0-9\-]*)+(?:\.(?:[A-Za-z1-9][A-Za-z0-9\-]*)+)*))?(?:\+(?P<build_metadata>(?:[A-Za-z1-9][A-Za-z0-9\-]*)+(?:\.(?:[A-Za-z1-9][A-Za-z0-9\-]*)+)*))?$
";
string input = @"131.22.33
131.22.33-a.b-t.c.123
131.22.33+abc.oio.a-sd
131.22.33-a.b-t.c.123+abc.oio.a-sd
131.22.33-
131.22.33--a.b-t.c.123
131.22.33+-abc.oio.a-sd
131.22.33++abc.oio.a-sd
131.22.33-a.b-t.c.123++abc.oio.a-sd
131..22.33
131.22.33-a..b-t.c.123
131.22.33+abc..oio.a-sd
131.22.33-a.b-t..c.123+abc.oio.a-sd
0131.22.33
131.022.33-a.b-t.c.123
131.22.033+abc.oio.a-sd
131.22.33-a.b-t.c.123+abc.oio.a-sd+a.b-t.c.123";
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