powershell - 如何在Powershell Write-Host语句中调用函数

Question

$BizTalkHelper = "d:\Scripts\BizTalkHelper.ps1"
.$BizTalkHelper # "dot source" the helper library.
Write-Host *** BEGIN ***

Write-Host $(Get-Date) " Desc:" {GetHostStateDesc 1 }
Write-Host $(Get-Date) " Desc:" GetHostStateDesc 2 

$result = GetHostStateDesc 1 
Write-Host $result 

除了将1转换为“Stopped”，将2转换为“Start Pending”，将4转换为“Running”等的switch语句外，我的函数还显示“hello”。
因此，我知道在前两种情况下不会调用它。

结果:

*** BEGIN *** 
3/29/2013 11:03:34 AM  Desc: GetHostStateDesc 1 
3/29/2013 11:03:34 AM  Desc: GetHostStateDesc 2 
hello 
Function GetHostStateDesc  1 
Stopped

Answer 1

试试这个:

function SayHello {'Hello'}
write-host $(SayHello)

打印:

Hello