Get-ParsedString.ps1

1. <# 
2. .SYNOPSIS 
3.     Formats a number using .NET - an MSDN Sample recoded in PowerShell 
4. .DESCRIPTION 
5.     This script createa a number and formats it in Hex. Then a negative number 
6.     is created and formatted several ways. Uses int32.parse method to do the  
7.     parsing. 
8. .NOTES 
9.     File Name  : Get-ParsedString 
10.     Author     : Thomas Lee - tfl@psp.co.uk 
11.     Requires   : PowerShell V2 CTP3 
12. .LINK 
13.     Posted to: 
14.     http://pshscripts.blogspot.com/2008/12/get-parsedstringps1.html 
15.     Script also posted to MSDN at: 
16.     http://msdn.microsoft.com/en-us/library/system.globalization.numberstyles(VS.85).aspx 
17. .EXAMPLE 
18.     PS c:\foo> .\Get-ParsedString.ps1 
19.     A in hex = 10 in decimal 
20.     '    -42    ' parsed to an int32 is '-42'. 
21.     '    (42)   ' parsed to an int32 is '-42'. 
22. #> 
23.  
24.  
25. ### 
26. #  Start of Script 
27. ### 
28.  
29. # Parse the string as a hex value and display the value as a decimal. 
30. $num = "A" 
31. $val = [system.int32]::Parse($num, [System.Globalization.NumberStyles]::HexNumber) 
32.  
33. "{0} in hex = {1} in decimal" -f $num,$val 
34.  
35. # Parse the string, allowing a leading sign, and ignoring leading and trailing white spaces. 
36. $num = "    -42    " 
37.  
38. # create parsing value using value__ 
39. $format  = [System.Globalization.NumberStyles]::AllowLeadingSign.value__+ 
40.            [System.Globalization.NumberStyles]::AllowLeadingWhite.value__ + 
41.            [System.Globalization.NumberStyles]::AllowTrailingWhite.value__   
42. $parsing = [System.Globalization.NumberStyles] $format      
43.  
44. # parse and display 
45. $val = [system.int32]::Parse($num,$parsing) 
46. "'{0}' parsed to an int32 is '{1}'." -f $num, $val 
47.  
48. # Now try a negative number 
49. $num = "    (42)   " 
50. $format  = [System.Globalization.NumberStyles]::AllowParentheses.value__  + 
51.            [System.Globalization.NumberStyles]::AllowLeadingSign.value__  + 
52.            [System.Globalization.NumberStyles]::AllowLeadingWhite.value__ + 
53.            [System.Globalization.NumberStyles]::AllowTrailingWhite.value__ 
54. $parsing = [System.Globalization.NumberStyles] $format              
55.  
56. # And parse/display it 
57. $val = [system.int32]::Parse($num, $parsing) 
58. "'{0}' parsed to an int32 is '{1}'." -f $num, $val 

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