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Examples using PowerShell script and function parameters
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| # | |
| # Examples using PowerShell script and function parameters | |
| # | |
| # Give the script some of the standard PowerShell parameters like -Verbose and -Debug | |
| [CmdletBinding()] | |
| Param ( | |
| # Make this parameter mandatory, so no default value | |
| [Parameter(Mandatory=$true)] | |
| [string] $FirstParameterAsString, | |
| # This parameters is not mandatory, so let's give it a default value | |
| [int] $NextParameterAsInteger = -999 | |
| ) | |
| # This causes the PowerShell interpreter to use strict checking on things like | |
| # whether we've declared variables before using. Rather than set a version | |
| # of PowerShell for the checking, we'll use the latest - whatever is installed. | |
| Set-StrictMode -Version Latest | |
| # Always helps to clear the console before doing anything... | |
| Clear-Host | |
| # | |
| # | |
| # | |
| Function LogToConsole([string] $message) | |
| { | |
| Write-Host "=====" | |
| Write-Host $message "...`r`n" | |
| } | |
| # | |
| # TestFunctionWithStringAndIntegerArgs | |
| # | |
| Function TestFunctionWithStringAndIntegerArgs([string] $stringArg1, [int] $intArg2) | |
| { | |
| If ($stringArg1) | |
| { | |
| Write-Host "stringArg1 is not null: $stringArg1" | |
| } | |
| Else | |
| { | |
| Write-Host "stringArg1 is null" | |
| } | |
| If ($intArg2) | |
| { | |
| Write-Host "intArg2 is not null: $intArg2" | |
| } | |
| Else | |
| { | |
| Write-Host "intArg2 is null" | |
| } | |
| # The following string will be "emitted" as the result of this function | |
| "Done with function" | |
| } | |
| # | |
| # Main | |
| # | |
| # Show the actual parameter values | |
| LogToConsole "Show the actual parameter values" | |
| Write-Host "FirstParameterAsString = $FirstParameterAsString" | |
| Write-Host "NextParameterAsInteger = $NextParameterAsInteger" | |
| # Call the function and capture its output in a variable | |
| LogToConsole "Call the function and capture its output in a variable" | |
| $resultWithValues = TestFunctionWithStringAndIntegerArgs -stringArg1 "a real string" -intArg2 1 | |
| # Show what the function "emitted" | |
| LogToConsole "Show what the function 'emitted'" | |
| $resultWithValues | |
| # Call the function without capturing its output - i.e., | |
| # this time we will simply show the function output to the | |
| # console. | |
| LogToConsole "Call the function without capturing its output" | |
| TestFunctionWithStringAndIntegerArgs |
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