using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\d{4})-(\d{2})-(\d{2})(?:[T ](\d{2}):(\d{2}):(\d{2})(?:\.(\d{0,7}))?(?:([+-])(\d{2}):(\d{2}))?)?";
string input = @"2020-01-01T00:00:00.000000+04:07
2020-01-01 00:00:00.000000-04:07
2020-01-01 00:00:00.000000Z
2020-01-01
2020-01";
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