NumberRange.Add Method

Definition

Adds a single number to the sequence.

public virtual void Add(int singleNumber)

Adds a range of numbers to the sequence. Reverse ordering is accepted.

public virtual void Add(int? startNumber, int? endNumber)

startNumber int?: The start number of the range. If value is null, range is considered an open range from 1 to endNumber.
endNumber int?: The end number of the range. If value is null, range is considered an open range from startNumber to final number.

Adds a range of numbers to the sequence from a string representation (e.g. 1-5, 8, 11-13).

public virtual void Add(string rangeString)

The range is specified as a string in the following forms or combination thereof:

5	single value
1,2,3,4,5	sequence of values
1-5	closed range
-5	open range (converted to a sequence from 1 to 5)
1-	open range (converted to a sequence from 1 to final number)
all	keyword representing all numbers.
odd	keyword representing odd numbers.
even	keyword representing even numbers.

The value delimiter can be either ',' or ';' and the range separator can be either '-' or ':'. Whitespace is permitted at any point in the input.

Any elements of the sequence that contain non-digit, non-whitespace, or non-separator characters or that are empty are ignored.