Using the Invoke-Expression Cmdlet:
The Invoke-Expression cmdlet provides one way to run a script from within Windows PowerShell.
Invoke-Expression c:\scripts\test.ps1
or
& c:\scripts\test.ps1
And you also can run a function in your Powershell Script by a variable. This is something really important when you work with dynamic scripts:
Invoke-Expression -command ($Function_Name)
you even can send dynamic parameters to this function:
Invoke-Expression -command ($Function_Name + ' $Function_Parameters')
