Question

因此，我已经完成了脚本，并且可以按需运行。但是我需要添加一条try / catch语句来捕获system.outofmemoryexception。我在哪里放一个问题。每次我放置它并尝试运行它时，都会被告知我丢失了Catch或finally块，并且丢失了直到语句。但是我确实添加了它。

#Clears powershell command line
Clear-Host
Do 
{
    $Num = Read-Host "Press a corresonding number to generate file output"
    Try 
    {
            Switch ( $Num )  
            {
                1 
                {
                    'Daily Log Generated'
                    #The directory of files with the extenstion .log will be listed and output to a text file 
                    $Dir = Get-ChildItem C:\Users\cf3es\Downloads\Requirements1 -Recurse
                    $List = $Dir | where {$_.Extension -eq ".log"} | 
                                    Out-File 'C:\Users\cf3es\Downloads\Requirements1\DailyLog.txt'
               }
               2 
               {
                   'File List Generated'
                    #The contents of the folder will be listed in alphabetical order and will be output to a text file 
                    $Dir = Get-ChildItem C:\Users\cf3es\Downloads\Requirements1 -Recurse
                    Sort-Object -Property @{Expression = "Name"; Descending = $True}
                    $List = $Dir | 
                                    Out-File 'C:\Users\cf3es\Downloads\Requirements1\C917contents.text' 
              } 
              3 
              {
                  'CPU Info Displayed'
                  #Physical disk usage and CPU time will be displayed every 5 seconds with 4 samples
                  Get-Counter -Counter "\Processor(_Total)\% Processor Time" -SampleInterval 5 -MaxSamples 4
                  Get-Counter "\LogicalDisk(C:)\Disk Reads/sec" -SampleInterval 5 -MaxSamples 4
              }
              4
              {
                  'Running Processes Generated'
                  #All running processes will be displayed in a grid format in decending order
                  Get-Process | 
                  Sort TotalProcessorTime -ea silentlycontinue -descending |
                  Select -Property ID,ProcessName,TotalProcessorTime | 
                  Out-GridView 
             }
         }   
     }
 }
 Catch 
 {
     $ErrorMessage = System.OutOfMemoryException
 }
 Until ($Num -eq 5)           
 #this will exit the script

Answer 1

在catch块之前删除}，并在catch块后面添加}。

Do 
{
   Try 
   {
       Switch ( )  
       {
       }
   }
}
Catch 
{
}
Until ()

内部删除的代码，捕获在try块之外。这就是为什么我要严格格式化代码的原因，因为它有助于防止发生此类错误。

在Powershell中向Switch语句添加Try / Catch

1 个答案: