Get continuous list of integers

Question

I am trying to print numbers from 1 to 1000 (inclusive of 1000).

for (int i = 1; i <= 1000; i=i+1)
{
       Console.WriteLine(i);
}

But, I do remember a single line of code that I myself used before. Like below:

Enumerable.TheMethodGives1To1000(Console.WriteLine);

Any ideas ?

Answer 1

What you need is Enumerable.Range method which generates a sequence of integral numbers within a specified range. It returns IEnumerable<int> object. And for printing the elements in this collection we can use List<T>.ForEach method. It performs the specified action on each element of the List<T>. And in case of single argument you can pass function by itself.

So, the result is:

 Enumerable.Range(1, 1000)
           .ToList()
           .ForEach(Console.WriteLine);

Answer 2

foreach(var i in Enumerable.Range(1, 999))
    Console.WriteLine(i);