Erhalte den nächsten Index als dreistellige Zahl

Get the next index as a three-digit number

Parameters are defined at the first non-comment line within a script of function.

param (
    $Noun,
    $Verb
)

Specify data types of parameters

Identify flag

param(
    [Switch] $Force
)

Identify specific type

param (
    [DateTime] $Date
)

Validate out of predefined options

param (
    [ValidateSet("World", "Galaxy", "Universe")] $Noun
)

Provide default values

Set default value

param (
    $Noun = "none"
)

Set default via command

param (
    $Date = $(Get-Date)
)

Require parameter

param (
    [Parameter(Mandatory,HelpMessage="Enter your name")] $Name
)

Attribute	Default	Description
`Mandatory`	false	Make parameter mandatory and prompt for value when the user does not supply one
`ParameterSetName`		Define mutually exclusive parameters
`Position`		Assign positions to parameters and use arguments without parameter names
`ValueFromPipeline`	false	Assign pipeline input to a parameter
`ValueFromPipelineByPropertyName`		Assign a specific property of pipeline input to a parameter
`ValueFromRemainingArguments`	false	Create a ParamArray and assign any unbound argument to a parameter
`DontShow`	false	Hide parameter in IntelliSense and tab completion
`HelpMessage`		Provide a help message for mandatory parameters
`HelpMessageBaseName`		Name of resource assembly that contains compiled help messages
`HelpMessageResourceId`		Resource identifier for help message

Sources: