Powershell GUI not registering Radio Button as clicked [duplicate] - wpf

Question

This question already has answers here:
WPF if statement based on radio button checked or not
(3 answers)
Closed 1 year ago.
I have the following code:
$var_executeButton.Add_Click( {
if ($var_radioButton.Checked) {
..do stuff
}
})
however, the code inside the if block never run, even if radio button is checked.
Code outside of the if works just fine.
Can you please tell me why?

Answer 1

Continuing from my comment. There ways to take action on form elements at the time they are acted on or checked later. As an example here is a simple WinForm, that discovers all radio button controls on a form and takes the same action when any one of them is clicked.
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()
$objForm = New-Object System.Windows.Forms.Form
$objForm.Text = "Test"
$objForm.Size = New-Object System.Drawing.Size(400, 200)
$objForm.StartPosition = "CenterScreen"
$RadioButton1 = New-Object System.Windows.Forms.RadioButton
$RadioButton1.Location = New-Object System.Drawing.Size(10, 10)
$RadioButton1.Size = New-Object System.Drawing.Size(100, 20)
$RadioButton1.Checked = $false
$RadioButton1.text = "Button1"
$objForm.controls.Add($RadioButton1)
$RadioButton2 = New-Object System.Windows.Forms.RadioButton
$RadioButton2.Location = New-Object System.Drawing.Size(10, 50)
$RadioButton2.Size = New-Object System.Drawing.Size(100, 20)
$RadioButton2.Checked = $false
$RadioButton2.text = "Button2"
$objForm.controls.Add($RadioButton2)
$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Size(10, 120)
$OKButton.Size = New-Object System.Drawing.Size(150, 30)
$OKButton.Text = "OK"
$OKButton.Enabled = $false
$OKButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$objForm.Controls.Add($OKButton)
$objForm.AcceptButton = $OKButton
$objForm.TopMost = $True
$objForm.Controls |
Where-Object { $PSItem -is [System.Windows.Forms.RadioButton] } |
ForEach-Object {
$PSItem.Add_Click(
{
If (-Not $OKButton.Enabled)
{$OKButton.Enabled = $True}
})
}
$Form = $objForm.ShowDialog()
To see if a radio button is checked, you can use either .Checked,
# Example - check radio button state on OK click.
function Test-RadioButtonCheck
{
Param
(
$title,
$a1,
$a2,
$a3
)
$form = New-Object System.Windows.Forms.Form
$form.Size = '300,250'
$form.Text = $title
$form.StartPosition = [System.Windows.Forms.FormStartPosition]::CenterScreen
$label1 = New-Object System.Windows.Forms.Label
$label1.Location = '15,15'
$label1.Width = 100
$label1.Text = 'Enter some text'
$form.Controls.Add($label1)
$textBox1 = New-Object System.Windows.Forms.TextBox
$textBox1.Location = '115,15'
$textBox1.width = 150
$textBox1.Name = 'input'
$form.Controls.Add($textBox1)
$radio1 = New-Object System.Windows.Forms.RadioButton
$radio1.Location = '25,40'
$radio1.Text = 'Check me if you want the save'
$radio1.Width = 200
$form.Controls.Add($radio1)
$button = New-Object System.Windows.Forms.Button
$button.Location = '70,70'
$button.Text = 'Ok'
$button.DialogResult = 'Ok'
$form.Controls.Add($button)
if($form.ShowDialog() -eq 'Ok')
{
if($textBox1.Text)
{
if($radio1.Checked){$form}
else{[void][System.Windows.Forms.MessageBox]::Show('You didn''t check the radio button','Error')}
}
else{[void][System.Windows.Forms.MessageBox]::Show('You didn''t enter any text','Error')}
}
}
if($frm = Test-RadioButtonCheck 'Test form')
{Write-Host "You entered $($frm.Controls['input'].Text)" -ForegroundColor Green}
.IsChecked as per mklement0's link, or looping to find them:
Where {$PSItem -is [system.windows.controls.radiobutton] -and $PSItem.IsChecked} |
Select Name
... or using [System.Windows.Controls.RadioButton]::CheckedEvent as per this WPF example:
[xml]$xaml = #"
<Window
xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
x:Name = "Window" Title = "Initial Window" WindowStartupLocation = "CenterScreen"
SizeToContent = "WidthAndHeight" ShowInTaskbar = "True" Background = "lightgray">
<StackPanel x:Name = 'StackPanel'>
<RadioButton x:Name = "Item1" Content = 'Item1'/>
<RadioButton x:Name = "Item2" Content = 'Item2'/>
<RadioButton x:Name = "Item3" Content = 'Item3'/>
<Separator/>
<TextBox x:Name = 'textbox'/>
</StackPanel>
</Window>
"#
$reader = (New-Object System.Xml.XmlNodeReader $xaml)
$Window = [Windows.Markup.XamlReader]::Load( $reader )
$xaml.SelectNodes("//*[#*[contains(translate(name(.),'n','N'),'Name')]]") |
ForEach {Set-Variable -Name ($PSItem.Name) -Value $Window.FindName($PSItem.Name) -Scope Script}
#Bubble up event handler
[System.Windows.RoutedEventHandler]$Script:CheckedEventHandler =
{$TextBox.Text = $PSItem.source.name}
$StackPanel.AddHandler([System.Windows.Controls.RadioButton]::
CheckedEvent, $CheckedEventHandler)
$Window.Showdialog() | Out-Null
If you want dig at the explanations of the WPF and radio button options, then see this blog post regarding the samples shown:
https://learn-powershell.net/2014/08/10/powershell-and-wpf-radio-button
If the aforementioned is not what you are doing, then as per my comment, you are not showing what the use case really is.