Catch errors when creating a VM using Powershell

Question

When creating a new VM with Powershell, is there any way to catch errors?

New-VM -Name $vmname `
 -MemoryStartupBytes $memorySize `
 -Path D:\Hyper-V\ `
 -NewVHDPath D:\Hyper-V\$vmname\$vmname.vhdx `
 -NewVHDSizeBytes $diskSize `
 -Generation 2 `
 -SwitchName "vSwitch"

For example, an error can occur if the virtual switch does not exist. In this case, no more tasks should be processed and the script should be terminated.

Answer 1

The New-VM cmdlet recognizes all "Common-Parameters", so adding "-ErrorAction STOP" to the cmdlets' parameters and wrapping the cmdlet in a Try/Catch will allow you trigger a terminating exception for an errors encountered during the cmdlets' execution.

Try{
    New-VM  -Name $vmname 
            -MemoryStartupBytes $memorySize 
            -Path D:\Hyper-V\ 
            -NewVHDPath D:\Hyper-V\$vmname\$vmname.vhdx 
            -NewVHDSizeBytes $diskSize 
            -Generation 2 
            -SwitchName "vSwitch"
            -ErrorAction STOP
}
Catch{
    # Report or handle the error here
}