Starts all VMs in a resource group, starting VMs matching *DC1 first (by default, uses -StartOrder)

Start-AzureLab.ps1

#function Start-AzureLab {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory, ValueFromPipelineByPropertyName, ValueFromPipeline)]
        [ArgumentCompleter({(Get-AzureRmResourceGroup).ResourceGroupName})]
        [string[]]$ResourceGroupName,

        [ArgumentCompleter({(Get-AzureRmSubscription).Name | % {"'$_'"}})]
        [string]$SubscriptionName = (Get-AzureRmContext).Subscription.Name,

        [string[]]$StartOrder = @('*DC1'),

        [switch]$Wait,

        [switch]$PassThru
    )
    begin {
        $CurrentSubscription = (Get-AzureRmContext).Subscription.Name
        if ($SubscriptionName -ne $CurrentSubscription) {
            $SubscriptionChanged = Select-AzureRmSubscription $SubscriptionName
        }
    }
    process {
        foreach ($Group in $ResourceGroupName) {
            $VMs = Get-AzureRmVm -ResourceGroupName $Group

            if ($VMs.Count -eq 0) {
                Write-Warning "No VMs found in '$($Group)'. Please check that '$($SubscriptionName)' is the correct subscription."
            }

            foreach ($Filter in $StartOrder) {
                $null = $VMs | Where Name -like $Filter | Start-AzureRmVM
            }
            $Jobs = $VMs | Start-AzureRmVM -AsJob
            if ($PSBoundParameters.ContainsKey('Wait')) {
                $Jobs | Wait-Job
            } elseif ($PSBoundParameters.ContainsKey('PassThru')) {
                $Jobs
            }
        }
    }
    end {
        if ($SubscriptionChanged) {
            $null = Select-AzureRmSubscription $CurrentSubscription
        }
    }
#}