Dialoge in PowerShell

In diesem Artikel möchte ich einige Beispiel zeigen wie man Dialog aus dem .Net Framework in PowerShell nutzen kann.

Message Box

# Show message box popup.
Add-Type -AssemblyName System.Windows.Forms
$result = [System.Windows.Forms.MessageBox]::Show("My message", "Window Title", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::None)
 

Message Box with Custom Buttons

$caption = "Choose Action";
$message = "What do you want to do?";
$restart = new-Object System.Management.Automation.Host.ChoiceDescription "&Restart","Restart";
$shutdown = new-Object System.Management.Automation.Host.ChoiceDescription "&Shutdown","Shutdown";
$choices = [System.Management.Automation.Host.ChoiceDescription[]]($restart,$shutdown);
$answer = $host.ui.PromptForChoice($caption,$message,$choices,0)
switch ($answer){
    0 {"You entered restart"; break}
    1 {"You entered shutdown"; break}
}

Input Box

# Show input box popup.
Add-Type -AssemblyName Microsoft.VisualBasic
$inputText = [Microsoft.VisualBasic.Interaction]::InputBox("Enter some value:", "Window Title", "Default value")
 

Open File Dialog

# Show an Open File Dialog and return the file selected by the user.
function Read-OpenFileDialog([string]$InitialDirectory, [switch]$AllowMultiSelect)
{
Add-Type -AssemblyName System.Windows.Forms
$openFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$openFileDialog.initialDirectory = $InitialDirectory
$openFileDialog.filter = "All files (*.*)| *.*"
if ($AllowMultiSelect) { $openFileDialog.MultiSelect = $true }
$openFileDialog.ShowDialog() > $null
if ($allowMultiSelect) { return $openFileDialog.Filenames } else { return $openFileDialog.Filename }
}
Read-OpenFileDialog C:\Temp -AllowMultiSelect

Folder Browse Dialog

# Show an Open Folder Dialog and return the directory selected by the user.
function Read-FolderBrowseDialog([string]$InitialDirectory)
{
Add-Type -AssemblyName System.Windows.Forms
$openFolderDialog = New-Object System.Windows.Forms.FolderBrowserDialog
$openFolderDialog.ShowNewFolderButton = $true
$openFolderDialog.RootFolder = $InitialDirectory
$openFolderDialog.ShowDialog()
return $openFolderDialog.SelectedPath
}
Read-FolderBrowseDialog Desktop

List Box Dialog

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
$form = New-Object System.Windows.Forms.Form
$form.Text = 'My Title'
$form.Size = New-Object System.Drawing.Size(300,200)
$form.StartPosition = 'CenterScreen'
$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Point(75,120)
$OKButton.Size = New-Object System.Drawing.Size(75,23)
$OKButton.Text = 'OK'
$OKButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$form.AcceptButton = $OKButton
$form.Controls.Add($OKButton)
$CancelButton = New-Object System.Windows.Forms.Button
$CancelButton.Location = New-Object System.Drawing.Point(150,120)
$CancelButton.Size = New-Object System.Drawing.Size(75,23)
$CancelButton.Text = 'Cancel'
$CancelButton.DialogResult = [System.Windows.Forms.DialogResult]::Cancel
$form.CancelButton = $CancelButton
$form.Controls.Add($CancelButton)
$label = New-Object System.Windows.Forms.Label
$label.Location = New-Object System.Drawing.Point(10,20)
$label.Size = New-Object System.Drawing.Size(280,20)
$label.Text = 'Please select a value:'
$form.Controls.Add($label)
$listBox = New-Object System.Windows.Forms.ListBox
$listBox.Location = New-Object System.Drawing.Point(10,40)
$listBox.Size = New-Object System.Drawing.Size(260,20)
$listBox.Height = 80
[void] $listBox.Items.Add('Value1')
[void] $listBox.Items.Add('Value2')
[void] $listBox.Items.Add('Value3')
[void] $listBox.Items.Add('Value4')
[void] $listBox.Items.Add('Value5')
[void] $listBox.Items.Add('Value6')
[void] $listBox.Items.Add('Value7')
$form.Controls.Add($listBox)
$form.Topmost = $true
$result = $form.ShowDialog()
if ($result -eq [System.Windows.Forms.DialogResult]::OK)
{
    $x = $listBox.SelectedItem
    $x
}