Command Line / Powershell command to pipe file names to an application

Question

I would like to input all the filenames in the current directory after an application name, like so:

root\file1.ext
root\file2.ext
root\file3.ext

$ app.exe file1.ext file2.ext file3.ext

I could write a batch file that could do this automatically and add it to the PATH variable, which is an okay solution. But can PowerShell for example let me write a command like this on-the-fly?

Answer 1

You can use this:

app.exe (dir *.ext)

Answer 2

Alternatively:

dir *.ext | app.exe $_