/// <summary>
/// Formats the number into the specified StringBuffer using the pattern of
/// this DecimalFormat. If the field specified by the FieldPosition is
/// formatted, set the begin and end index of the formatted field in the
/// FieldPosition.
/// </summary>
///
/// <param name="number">the object to format</param>
/// <param name="toAppendTo">the StringBuffer</param>
/// <param name="pos">the FieldPosition</param>
/// <returns>the StringBuffer parameter <c>buffer</c></returns>
/// <exception cref="IllegalArgumentException">if the given number is not instance of <c>Number</c></exception>
public sealed override StringBuilder FormatObject(Object number, StringBuilder toAppendTo,
FieldPosition pos)
{
if (!(number is ValueType))
{
throw new ArgumentException();
}
if (toAppendTo == null || pos == null)
{
throw new NullReferenceException();
}
if (number is Int64 || number is Decimal)
{
return(dform.FormatObject(number, toAppendTo, pos));
}
return(base.FormatObject(number, toAppendTo, pos));
}