Get-TryCatchFinally.ps1

1. <# 
2. .SYNOPSIS 
3.     Shows Try/Catch/Finally using Powershell 
4. .DESCRIPTION 
5.     This is an MSDN Sample, re-written in PowerShell 
6. .NOTES 
7.     File Name  : get-trycatchfinally.ps1 
8.     Author     : Thomas Lee - tfl@psp.co.uk 
9.     Requires   : PowerShell V2 CTP3 
10. .LINK 
11.     Original script posted to: 
12.     http://pshscripts.blogspot.com/2009/01/get-trycatchfinallyps1.html
13.     MSDN Sample at: 
14.     http://msdn.microsoft.com/en-us/library/zwc8s4fz.aspx 
15. .EXAMPLE 
16.     PS C:\foo> .\Get-TryCatchFinally.ps1 
17.     Error in conversion 
18.     Error record: Cannot convert value "Some string" to type "System.Int32". Error: "Input string was not in a correct format." 
19.     $i = 123 
20.     $i = System.Int32 
21. #> 
22.  
23. ### 
24. # Start of script 
25. ### 
26.  
27. # Create some explicitly typed values 
28. [int]    $i = 123 
29. [string] $s = "Some string" 
30. [object] $o = $s 
31.  
32. # Now try to convert an object into an integer (which will fail) 
33.  
34. try { 
35. # Invalid conversion; $o contains a string not an int 
36. $i = [int] $o 
37. } 
38.  
39. # catch the error and display 
40. catch { 
41. "Error in conversion" 
42. "Error record: {0}" -f $Error[0] 
43. } 
44. # Clean up 
45. finally { 
46. "`$i = {0}" -f $i 
47. "`$i = {0}" -f $i.gettype() 
48. } 
49. # End of Script 

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