PowerShell中的導入模塊和Add-PSSnapin

Question

如何編寫應檢查Add-PSSnapin的代碼，如果該代碼不存在，則檢查Import-Module，如果該代碼也不存在，則退出該腳本。我編寫了下面的代碼，但在使用它時出現內存溢出問題。

cls 
Function GetModule { 

$ErrorActionPreference = 'Stop' 

if(-not(Get-Module -Name VMware.VimAutomation.Core)) 
{ 
Import-Module VMware.VimAutomation.Core 
} 

Elseif (-not(Get-PSSnapin -Name VMware.VimAutomation.Core)) 
{ 
    Add-PSSnapin VMware.VimAutomation.Core 
} 

Else { 

Write-Host "VMware PowerCLI Modules are NOT INSTALLED on this machine !" 
Exit 
} 

} 

GetModule 

Answer 1

您可以使用多個try/catch語句，與-ErrorAction Stop參數

Function GetModule { 

Try { 
Import-Module -Name VMware.VimAutomation.Core -ErrorAction Stop 
} 

catch { 

    Write-Host "Unable to load VMware PowerCLI Module, trying the PSSnapin..." 

    try { 
    Add-PSSnapin VMware.VimAutomation.Core -ErrorAction Stop 
    } 

     catch { 
     Write-Host "VMware PowerCLI Modules are NOT INSTALLED on this machine !" 
     return 
     } 
    } 

}