/// <summary>
/// Safely return Value of the desired Element. This relieves the need to check
/// for ethe existence or null value of the required element.
/// </summary>
/// <param name="element">The Containing element element</param>
/// <param name="index">Zero based index of the element required</param>
/// <returns>A string represenation of the hl7 field.</returns>
public static string ElementValue(this HL7Element element, int index)
{
return((element == null) ? null :
(index == -1) ? element.ToString() :
(index == 0 && element.Count == 0) ? element.Value :
(element.Count > index) ? element[index].ToString() : "");
}