Int32.Parse Method (System)

	Name	Description
	Parse(String)	Converts the string representation of a number to its 32-bit signed integer equivalent.
	Parse(String, NumberStyles)	Converts the string representation of a number in a specified style to its 32-bit signed integer equivalent.
	Parse(String, IFormatProvider)	Converts the string representation of a number in a specified culture-specific format to its 32-bit signed integer equivalent.
	Parse(String, NumberStyles, IFormatProvider)	Converts the string representation of a number in a specified style and culture-specific format to its 32-bit signed integer equivalent.

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Parse Sample using PowerShell

Thomas Lee | Edit | Show History

<#
.SYNOPSIS
    Formats a number using .NET - an MSDN Sample recoded in PowerShell
.DESCRIPTION
    This script createa a number and formats it in Hex. Then a negative number
     is created and formatted several ways. Uses int32.parse method to do the 
     parsing.
.NOTES
    File Name  : Get-ParsedString
     Author     : Thomas Lee - tfl@psp.co.uk
     Requires   : PowerShell V2 CTP3
.LINK
    Posed to: 
http://pshscripts.blogspot.com/2008/12/get-parsedstringps1.html
    Script also posted to MSDN at:
http://msdn.microsoft.com/en-us/library/system.globalization.numberstyles(VS.85).aspx
.EXAMPLE
    PS c:\foo> .\Get-ParsedString.ps1
    A in hex = 10 in decimal
    '    -42    ' parsed to an int32 is '-42'.
    '    (42)   ' parsed to an int32 is '-42'.
#>

  
###
#  Start of Script
###

# Parse the string as a hex value and display the value as a decimal.
$num = "A"
$val = [system.int32]::Parse($num, [System.Globalization.NumberStyles]::HexNumber)

"{0} in hex = {1} in decimal" -f $num,$val

# Parse the string, allowing a leading sign, and ignoring leading and trailing white spaces.
$num = "    -42    "

  
# create parsing value using value__
$format  = [System.Globalization.NumberStyles]::AllowLeadingSign.value__+
           [System.Globalization.NumberStyles]::AllowLeadingWhite.value__ +
           [System.Globalization.NumberStyles]::AllowTrailingWhite.value__  
$parsing = [System.Globalization.NumberStyles] $format

  
# parse and display
$val = [system.int32]::Parse($num,$parsing)
"'{0}' parsed to an int32 is '{1}'." -f $num, $val

  
# Now try a negative number
$num = "    (42)   "
$format  = [System.Globalization.NumberStyles]::AllowParentheses.value__  +
           [System.Globalization.NumberStyles]::AllowLeadingSign.value__  +
           [System.Globalization.NumberStyles]::AllowLeadingWhite.value__ +
           [System.Globalization.NumberStyles]::AllowTrailingWhite.value__
$parsing = [System.Globalization.NumberStyles] $format

  
 # And parse/display it
$val = [system.int32]::Parse($num, $parsing)
"'{0}' parsed to an int32 is '{1}'." -f $num, $val

Reference