DBremen

class DateTransformAttribute : System.Management.Automation.ArgumentTransformationAttribute {
   
    # property to take additional format strings for transformations
    [string[]]$AdditionalFormatStrings 

    # default constructor:
    DateTransformAttribute() : base() { }

    # 2nd constructor with parameter AdditionalFormatStrings
    DateTransformAttribute([string[]]$AdditionalFormatStrings) : base() {

DBremen

# define a format that is supported by our attribute
$stringDate = '4/14 4:12PM'
# try it first with the normal datetime type
[datetime]'4/14 4:12PM'
# this threw an error

# define a variable that utilizes the attribute
[datetime][DateTransform()]$dt = $stringDate
# no error 
$dt

DBremen

class DateTransformAttribute : System.Management.Automation.ArgumentTransformationAttribute {
   
    # property to take additional format strings for transformations
    [string[]]$AdditionalFormatStrings 

    # default constructor:
    DateTransformAttribute() : base() { }

    # 2nd constructor with parameter AdditionalFormatStrings
    DateTransformAttribute([string[]]$AdditionalFormatStrings) : base() {

DBremen

[datetime]::ParseExact('08|12|2009 4:33 PM','dd|MM|yyyy h:m tt',$Null)
#returns Tuesday, December 8, 2009 4:33:00 PM on an English system

DBremen

Param(
        [Parameter(Mandatory)]
        [ArgumentCompleter(
            {
                param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)
                $allTimezones = Get-TimeZone -ListAvailable | Group-Object DisplayName -AsHashTable -AsString
                $allTimezones.GetEnumerator() | Where-Object { $_.Name -like "*${wordToComplete}*" } |
                Sort-Object { $_.Value.Displayname }-Unique | ForEach-Object {
                    New-Object System.Management.Automation.CompletionResult (
                        "'$($_.Value.Id)'",

DBremen

DBremen

DBremen

DBremen

DBremen