WPFSamples/Full Examples/Dropdown list and data binding.ps1
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#region XAML window definition # Right-click XAML and choose WPF/Edit... to edit WPF Design # in your favorite WPF editing tool $xaml = @' <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" MinWidth="200" Width ="400" SizeToContent="Height" Title="Service Stopper" Topmost="True"> <Grid Margin="10,40,10,10"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <TextBlock Grid.Column="1" Margin="10">Choose Service to Stop:</TextBlock> <TextBlock Grid.Column="0" Grid.Row="1" Margin="5">Service</TextBlock> <ComboBox Name="ComboService" Grid.Column="1" Grid.Row="1" Margin="5"></ComboBox> <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="0,10,0,0" Grid.Row="2" Grid.ColumnSpan="2"> <Button Name="ButOk" MinWidth="80" Height="22" Margin="5">Stop Service</Button> <Button Name="ButCancel" MinWidth="80" Height="22" Margin="5">Cancel</Button> </StackPanel> </Grid> </Window> '@ function Convert-XAMLtoWindow { param ( [Parameter(Mandatory=$true)] [string] $XAML ) Add-Type -AssemblyName PresentationFramework $reader = [XML.XMLReader]::Create([IO.StringReader]$XAML) $result = [Windows.Markup.XAMLReader]::Load($reader) $reader.Close() $reader = [XML.XMLReader]::Create([IO.StringReader]$XAML) while ($reader.Read()) { $name=$reader.GetAttribute('Name') if (!$name) { $name=$reader.GetAttribute('x:Name') } if($name) {$result | Add-Member NoteProperty -Name $name -Value $result.FindName($name) -Force} } $reader.Close() $result } function Show-WPFWindow { param ( [Parameter(Mandatory=$true)] [Windows.Window] $Window ) $result = $null $null = $window.Dispatcher.InvokeAsync{ $result = $window.ShowDialog() Set-Variable -Name result -Value $result -Scope 1 }.Wait() $result } $window = Convert-XAMLtoWindow -XAML $xaml # add click handlers $window.ButOk.add_Click{ # when clicked, take the selected item from the combo box and stop the service # using -whatif to just simulate for now # TODO: Remove -whatif in next line to actually stop a service $window.ComboService.SelectedItem | Stop-Service -WhatIf # update the combo box (if we really stopped a service, the list would now be shorter) $window.ComboService.ItemsSource = Get-Service | Where-Object Status -eq Running | Sort-Object -Property DisplayName } $window.ButCancel.add_Click{ # close window $window.DialogResult = $false } # fill the combobox with some powershell objects $window.ComboService.ItemsSource = Get-Service | Where-Object Status -eq Running | Sort-Object -Property DisplayName # tell the combobox to use the property "DisplayName" to display the object in its list $window.ComboService.DisplayMemberPath = 'DisplayName' # tell the combobox to preselect the first element $window.ComboService.SelectedIndex = 0 Show-WPFWindow -Window $window #endregion |