Hex Operations in C#

HexOps.cs

public static class HexOps {
	public static byte[] ToBytesFromHex(string hex) {
		byte[] ret = new byte[hex.Length]; 
		for (int i = 0; i < hex.Length; i++) { 
			ret[i] = Convert.ToByte(hex[i]); 
		}
		return ret;
	}
}