Question

How to enable Out-GridView in a function.

I mean,

 "Hello" | Out-GridView

Works.

But if I have a simple function like this

function Count ([int]$times)
{
    for ($i=1; $i -le $times;$i++)
    {
        Write-Host $i
    }
}

Why calling Count 5 doest not support a pipe to Out-GridView?

Answer 1

The problem you are having is that Write-Host does not output to the pipeline at all. It writes directly to the screen. Replace Write-Host with Write-Output and it should work fine.

BTW, Write-Output is the default so you could just use:

function Count ([int]$times)
{
    for ($i=1; $i -le $times;$i++)
    {
        $i
    }
}

or even more simply:

function Count([int]$times) 
{
    1..$times
}