using System;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		string pattern = @"<(\w+\:[\w.-]+)>";
        string input = @"<staticText:HelloWorld>_<xmlNode:Node.03>_<date:yyy-MM-dd>_<time:HH-mm-ss-fff>
";
        
        foreach (Match m in Regex.Matches(input, pattern))
        {
            Console.WriteLine(m.Groups[1].Value);
        }
	}
}