Get index of current item in a PowerShell loop

Question

Given a list of items in PowerShell  how do I find the index of the current item from within a loop   For example    letters      A    B    C      letters           Can I easily get the index of    here      The goal of all of this is that I want to output a collection using Format-Table and add an initial column with the index of the current item  This way people can interactively choose an item to select

User · Answer

0    letters count-1    foreach    Value   0   Index   1   -f  letters

User · Answer

I am not sure it s possible with an  automatic  variable  You can always declare one for yourself and increment it    letters      A    B    C     letters       counter   0       counter      Or use a for loop instead     for   counter 0   counter -lt  letters Length   counter

User · Answer

NET has some handy utility methods for this sort of thing in System Array   PS gt   a    a   b   c  PS gt   array   IndexOf  a   b   1 PS gt   array   IndexOf  a   c   2   Good points on the above approach in the comments  Besides  just  finding an index of an item in an array  given the context of the problem  this is probably more suitable    letters      A    B    C     letters       i 0    Value    Index  i    i      Foreach     can have a Begin sciptblock that executes once   We set an index variable there and then we can reference it in the process scripblock where it gets incremented before exiting the scriptblock

User · Answer

For those coming here from Google like I did  later versions of Powershell have a  foreach automatic variable  You can find the  current  object with  foreach Current

User · Answer

For PowerShell 3 0 and later  there is one built in     foreach   item in  array         array IndexOf  item

[powershell] Get index of current item in a PowerShell loop

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