Returns the result of rounding {0} to the nearest number. If {0} is null, Number.Round returns null. {0} is rounded to the ...

Returns the result of rounding {0} to the nearest number. If {0} is null, Number.Round returns null.
    
      {0} is rounded to the nearest integer, unless the optional parameter {1} is specified. If {1} is specified, {0} is rounded to the {1} number of decimal digits. An optional {2} parameter specifies rounding direction when there is a tie between the possible numbers to round to (see RoundingMode.Type for possible values).