C#

using System.Text.RegularExpressions;
...
string expr = "(X, <OS:Size>, Z), (X, <OS:Type>, Y), (X, <OS:DateModified>, W), (X, <PDF:Title>, U)";
 
Regex re = new Regex("(\\([^,]*,\\s*<[^>]*>,[^)]*\\))");
 
MatchCollection matches = re.Matches(expr);
string[] str = new string[matches.Count];
for (int i=0; i < matches.Count; i++)
    str[i] = matches[i].Value;

• (...) - Capture the result of this expression as a match;
• \\(...\\) - The expression is contained within regular brackets. NB: The bracket must be escaped, since it has special meaning for regular expressions. Since this is a normal C# string, the escape character must also be escaped;
• [^,]*,... - Match anything except a comma zero or more times, followed by a comma;
• ...\\s*... - Match zero or more white-space characters;
• ...<[^>]*>,... - Match the < charcter, followed by zero or more characters which are not >, followed by >, followed by a comma;
• ...[^)]* - Match anything except a closing bracket.

Regex re = new Regex(@"(\([^,]*,\s*<[^>]*>,[^)]*\))");

int[] Converter(byte[] ba)
{
	int[] rtn = new int[ba.Length / 4];
	int idx = 0;

	foreach (int x in rtn)
	{
		for (int i = 0; i < 4; i++)
		{
			x *= 256;
			x += ba[idx++];
		}
	}

	return rtn;
}</code>

[StructLayout(LayoutKind.Explicit)]
public class Converter
{
[FieldOffset(0)] public byte[] byteArray;
[FieldOffset(0)] public int intConverted;
[FieldOffset(0)] public string stringConverted;
// etc
}