Get-ParsedInteger.ps1

1. <# 
2. .SYNOPSIS 
3.     This script parses several strings into integers, where possible.  
4. .DESCRIPTION 
5.     This script uses the TryParse method on [Int32] to attempt 
6.     to parse a string into a number and writes the results. This script 
7.     is a recoded MSDN sample using PowerShell 
8. .NOTES 
9.     File Name  : Get-ParsedInt32.ps1 
10.     Author     : Thomas Lee - tfl@psp.co.uk 
11.     Requires   : PowerShell Version 2.0 
12. .LINK 
13.     This script posted to: 
14.         http://www.pshscripts.blogspot.com 
15.     MSDN sample posted tot: 
16.         http://msdn.microsoft.com/en-us/library/f02979c7.aspx 
17. .EXAMPLE 
18.     Psh[C:\foo]> .\get-parsedinteger.ps1 
19. Attempted conversion of '' failed. 
20. Converted '160519' to 160519. 
21. Attempted conversion of '9432.0' failed. 
22. Attempted conversion of '16,667' failed. 
23. Converted '   -322   ' to -322. 
24. Converted '+4302' to 4302. 
25. Attempted conversion of '(100);' failed. 
26. Attempted conversion of '01FA' failed.     
27. #> 
28.  
29. # Define function to parse a string to integer 
30. Function TryToParse { 
31. # Parameter to parse into a number 
32. Param ([string] $value) 
33. # Define $number and try the parse 
34. [int] $number = 0 
35. $result = [System.Int32]::TryParse($value, [ref] $number); 
36. if ($result)  { 
37.       "Converted '{0}' to {1}." -f $value, $number  
38.               } 
39.       else    { 
40.         if ($value -eq $null) {$value = ""}  
41.        "Attempted conversion of '{0}' failed." -f $value 
42.               } 
43. } 
44.  
45. # Now call the function to see if the string will parse 
46. TryToParse($null) 
47. TryToParse("160519"); 
48. TryToParse("9432.0"); 
49. TryToParse("16,667"); 
50. TryToParse("   -322   "); 
51. TryToParse("+4302"); 
52. TryToParse("(100);"); 
53. TryToParse("01FA"); 

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