Range

System.Linq.Enumerable

Method

public static IEnumerable<int> Range(int start, int count)

Description

Generates a sequence of integral numbers within a specified range.

Remarks

The Range method returns an IEnumerable<int> that contains a sequence of integral numbers starting from the specified start value and continuing for the specified count number of values. The sequence will be start, start + 1, start + 2, and so on, up to start + count - 1.

If count is zero or negative, an empty sequence is returned.

Parameters

  • start

    The value of the first integer in the sequence.

  • count

    The number of integral numbers to generate.

Returns

An IEnumerable<int> that contains integers in the specified range.

Exceptions

  • ArgumentOutOfRangeException

    count is less than zero.

  • ArgumentOutOfRangeException

    start and count result in an overflow.

Example

using System;
using System.Collections.Generic;
using System.Linq;

public class Example
{
    public static void Main(string[] args)
    {
        // Generate a sequence of 10 integers starting from 5
        IEnumerable<int> numbers = Enumerable.Range(5, 10);

        // Output the numbers
        foreach (int number in numbers)
        {
            Console.Write(number + " ");
        }
        // Output: 5 6 7 8 9 10 11 12 13 14 

        Console.WriteLine();

        // Generate an empty sequence
        IEnumerable<int> emptySequence = Enumerable.Range(1, 0);
        Console.WriteLine($"Empty sequence count: {emptySequence.Count()}");
        // Output: Empty sequence count: 0
    }
}