Function Get-VM
{# .ExternalHelp MAML-VM.XML
   param(
       [parameter(ValueFromPipeLine = $true)]
[ValidateNotNullOrEmpty()][Alias("VMName")]
       $Name = "%",
       [parameter()][ValidateNotNullOrEmpty()]
       $Server = ".", #May need to look for VM(s) on Multiple servers
       [Switch]$Suspended,
       [switch]$Running,
       [switch]$Stopped
   )
   Process {
       # In case people are used to the * as a wildcard...
       if ($Name.count -gt 1 ) {[Void]$PSBoundParameters.Remove("Name")
; $Name | ForEach-object {Get-VM -Name $_ @PSBoundParameters}}
       if ($name -is [String]) {
          $Name = $Name.Replace("*","%")
          # Note in V1 the test was for caption like "Virtual%" which
did not work in languages other than English.
          # Thanks to Ronald Beekelaar - we now test for a processID ,
the host has a null process ID, stopped VMs have an ID of 0.
          $WQL = "SELECT * FROM MSVM_ComputerSystem WHERE ElementName
LIKE '$Name' AND ProcessID >= 0"
          if ($Running -or $Stopped -or $Suspended) {
            $state = ""
             if ($Running) {$State += " or enabledState = " +
[int][VMState]::Running }
             if ($Stopped) {$State += " or enabledState = " +
[int][VMState]::Stopped }
             if ($Suspended) {$State += " or enabledState = " +
[int][VMState]::Suspended }
             $state = $state.substring(4)
             $WQL += " AND ($state)"
          }
          Get-WmiObject -computername $Server -NameSpace $HyperVNamespace -Query $WQL | Add-Member -MemberType ALIASPROPERTY -Name "VMElementName" -Value "ElementName" -PassThru
       }
       elseif ($name.__class) {
          Switch ($name.__class) {
             "Msvm_ComputerSystem"      {$Name}
             "Msvm_VirtualSystemSettingData"      {get-wmiobject -
computername $Name.__SERVER -namespace $HyperVNamespace -Query
"associators of {$($name.__path)} where
resultclass=Msvm_ComputerSystem"}
             Default       get-wmiobject -
computername $Name.__SERVER -namespace $HyperVNamespace -Query
"associators of {$($Name.__path)} where
resultclass=Msvm_VirtualSystemSettingData" |
                                            ForEach-Object
{$_.getRelated("Msvm_ComputerSystem")} | Select-object -unique }
          }
       }
    }
}
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Function Get-VMSwitch
{# .ExternalHelp MAML-VMNetwork.XML
   param(
       [parameter(ValueFromPipeline = $true)][Alias("Name")]
       [String]$VirtualSwitchName="%",
       [parameter()][ValidateNotNullOrEmpty()]
       $Server = "." #Can query multiple servers for switches
       )
   process {
       $VirtualSwitchName=$VirtualSwitchName.replace("*","%")
       Get-WmiObject -computerName $server -NameSpace $HyperVNamespace
-query "Select * From MsVM_VirtualSwitch Where elementname like '$VirtualSwitchname' "
   }
}
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Function Get-VMSnapshot
{# .ExternalHelp MAML-VMSnapshot.XML
   Param(
       [parameter(Position=0 , ValueFromPipeline = $true)]
       $VM = "%",
       [String]$Name="%",
       [parameter()][ValidateNotNullOrEmpty()]
       $Server="." ,
       [Switch]$Current,
       [Switch]$Newest,
       [Switch]$Root
   )
   process{
          if ($VM -is [String]) {$VM=(Get-VM -Name $VM -Server $server) }
          if ($VM.count -gt 1 ) {[Void]$PSBoundParameters.Remove("VM") ; $VM |
ForEach-object { Get-VMSnapshot -VM $_ @PSBoundParameters}}
          if ($vm.__CLASS -eq 'Msvm_ComputerSystem') {
             if ($current) {Get-wmiobject -computerNam $vm.__server -
Namespace $HyperVNamespace -q "associators of {$($vm.path)} where assocClass=MSvm_PreviousSettingData"}
             else {$Snaps=Get-WmiObject -computerName $vm.__server -NameSpace $HyperVNameSpace -Query "Select * From MsVM_VirtualSystemSettingData Where systemName='$($VM.name)' and
instanceID <> 'Microsoft:$($VM.name)' and elementName like '$name' "
                if ($newest) {$Snaps | sort-object -property
creationTime | select-object -last 1 }
                elseif ($root) {$snaps | where-object {$_.parent -eq
                $null} }
                else {$snaps}
          }
       }
    }
}
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