Removing elements based on an index requires the creation of a new array and omission of the value in the element in that index. In each of the following cases, an array with 100 elements will be used as an example; the element at index 49 (with the value of 50) will be removed:

$oldArray = 1..100 

This method uses indexes to access and add everything we want to keep:

$newArray = $oldArray[0..48] + $oldArray[50..99] 

Using the .NET Array.Copy static method (see Chapter 8, Working with .NET):

$newArray = New-Object Object[] ($oldArray.Count - 1) 
# Before the index 
[Array]::Copy($oldArray,    # Source 
              $newArray,    # Destination 
              49)           # Number of elements to copy 
# After the index 
[Array]::Copy($oldArray,    # Source 
              50,           # Copy from index of Source 
              $newArray,    # Destination 
              49,           # Copy to index of Destination 
              50)           # Number of elements to copy 

Using a for loop:

$newArray = for ($i = 0; $i -lt $oldArray.Count; $i++) { 
    if ($i -ne 49) { 
        $oldArray[$i] 
    } 
}