Functions/Get-FileName.ps1
|
function Get-FileName { <# .SYNOPSIS Gets a filename through the native OpenFileDialog. Can select a single file or multiple files. .DESCRIPTION Gets a filename through the native OpenFileDialog. Can select a single file or multiple files. If user clicks 'OK' an [array] is returned, otherwise returns a $null if the dialog is canceled. .PARAMETER InitialDirectory The directory for the OpenFileDialog to start in. Defaults to $pwd. Aliased to 'Path'. .PARAMETER MultiSelect Determines if you can select one or multiple files. Defaults to $false. Aliased to 'Multi'. .PARAMETER Filter A character string delimited with pipe '|' character. Each 'token' in the string follows the form 'Description|FileSpec'. Multiple 'tokens' can be in the string and they too are separated by the pipe character. Defaults to 'All files|*.*'. .EXAMPLE PS C:\> $File = Get-FileName Will present a fileopen dialog box where only a single file can be selected and the fileopen dialog box will start in the current directory. Assigns selected file to the 'File' variable. .EXAMPLE PS C:\> $File = Get-FileName -MultiSelect -Filter 'Powershell files|*.ps1|All files|*.*' Will present a fileopen dialog box where multiple files can be selected and the fileopen dialog box will start in the current directory. There will be a drop down list box in lower right where the user can select 'Powershell files' or 'All files' and the files listed will change. Assigns selected file(s) to the 'File' variable. .EXAMPLE PS C:\> $File = Get-FileName -MultiSelect -InitialDirectory 'C:\Temp' Will present a fileopen dialog box where multiple files can be selected and the fileopen dialog box will start in the C:\Temp directory. Assigns selected file(s) to the 'File' variable. .EXAMPLE PS C:\> Get-FileName | get-childitem Pipes selected filename to the get-childitem cmdlet. .INPUTS None are required, but you can use parameters to control behavior. .OUTPUTS [array] If user selects file(s) and clicks 'OK'. Will return an array with a .Count and each element in the array will be the file(s) selected $null If the user clicks 'Cancel'. .NOTES Author: Bill Riedy Inspiration: Part of the ISEColorThemeCmdlets.ps1 Script by Jeff Pollock http://gallery.technet.microsoft.com/ISE-Color-Theme-Cmdlets-24905f9e Changes: Added parameter for MultiSelect of files. Forced function to always return an array. Filter is now a parameter that can be specified to control behavior. Changed InitialDirectory to default to $pwd and to give an alias of 'Path' which is commonly used parameter name. Also changed syntax to Add-Type -AssemblyName to conform with Powershell 2+ and to be more "Powershelly". # Source: https://gallery.technet.microsoft.com/ISE-Color-Theme-Cmdlets-24905f9e # get-help about_ISE-Color-Theme-Cmdlets for more information #> [CmdletBinding(ConfirmImpact = 'None')] [OutputType([string[]])] Param( [parameter(Mandatory = $false)] [alias('Path')] [string] $InitialDirectory = "$pwd", #default [alias('Multi')] [switch] $MultiSelect, #default [string] $Filter = 'All files (*.*)|*.*', #default [string] $Title, [switch] $AddExtension, [string] $DefaultExt ) begin { Write-Verbose -Message "Starting [$($MyInvocation.Mycommand)]" } process { Add-Type -AssemblyName System.Windows.Forms $OpenFileDialog = New-Object -TypeName System.Windows.Forms.OpenFileDialog $OpenFileDialog.InitialDirectory = $InitialDirectory $OpenFileDialog.Filter = $Filter $OpenFileDialog.MultiSelect = $MultiSelect if ($AddExtension) { $OpenFileDialog.AddExtension = $true } if ($Title) { $OpenFileDialog.Title = $Title } if ($DefaultExt) { $OpenFileDialog.DefaultExt = $DefaultExt } $Result = $OpenFileDialog.ShowDialog() # needed to play around to force PowerShell to return an array. if ($Result -eq 'OK') { if ($MultiSelect) { [array] $ReturnArray = $OpenFileDialog.FileNames return (, $ReturnArray) } else { [array] $ReturnArray = $OpenFileDialog.FileName return (, $ReturnArray) } } else { # nothing to return } } end { Write-Verbose -Message "Ending [$($MyInvocation.Mycommand)]" } } |