PowerShell - Get value from combobox, selected value is empty - powershell

Question

1.csv:
ServerName
Server1
Server2
Server3
I want to import csv file into combobox and get selected value into variable.
I can load above file to combobox, but output variable is null
function button ($WF) {
###################Load Assembly for creating form & button######
[void][System.Reflection.Assembly]::LoadWithPartialName( “System.Windows.Forms”)
[void][System.Reflection.Assembly]::LoadWithPartialName( “Microsoft.VisualBasic”)
#####Define the form size & placement
$form = New-Object “System.Windows.Forms.Form”;
$form.Width = 500;
$form.Height = 190;
$form.Text = $title;
$form.StartPosition = [System.Windows.Forms.FormStartPosition]::CenterScreen;
$form.ControlBox = $True
##############Define text label2
$textLabel2 = New-Object “System.Windows.Forms.Label”;
$textLabel2.Left = 25;
$textLabel2.Top = 80;
$textLabel2.Text = $WF;
############Define text box2 for input
$cBox2 = New-Object “System.Windows.Forms.combobox”;
$cBox2.Left = 150;
$cBox2.Top = 80;
$cBox2.width = 200;
###############"Add descriptions to combo box"##############
$NameHash = #{}
import-csv "C:\Users\Komp\Desktop\1.csv" | ForEach-Object {
$cBox2.Items.Add($_.ServerName)
}
#############define OK button
$button = New-Object “System.Windows.Forms.Button”;
$button.Left = 360;
$button.Top = 45;
$button.Width = 100;
$button.Text = “Ok”;
$Button.Cursor = [System.Windows.Forms.Cursors]::Hand
$Button.Font = New-Object System.Drawing.Font("Times New Roman",12,[System.Drawing.FontStyle]::BOLD)
############# This is when you have to close the form after getting values
$eventHandler = [System.EventHandler]{
$cBox2.Text;
$form.Close();};
#############Add controls to all the above objects defined
$form.Controls.Add($button);
$form.Controls.Add($textLabel2);
$form.Controls.Add($cBox2);
$ret = $form.ShowDialog();
#################return values
$output = $cBox2.SelectedItem.ToString()
}
$return = button “Job Descriptions"
The problem is that $output variable is empty, how to export selected value into $output variable ?
Got this code from this question

Answer 1

Thanks to Santiago Squarzon's link, managed to solve it
###################Load Assembly for creating form & button######
[void][System.Reflection.Assembly]::LoadWithPartialName( “System.Windows.Forms”)
[void][System.Reflection.Assembly]::LoadWithPartialName( “Microsoft.VisualBasic”)
#####Define the form size & placement
$form = New-Object “System.Windows.Forms.Form”;
$form.Width = 500;
$form.Height = 190;
$form.Text = $title;
$form.StartPosition = [System.Windows.Forms.FormStartPosition]::CenterScreen;
$form.ControlBox = $True
##############Define text label2
$textLabel2 = New-Object “System.Windows.Forms.Label”;
$textLabel2.Left = 25;
$textLabel2.Top = 80;
$textLabel2.Text = $WF;
############Define text box2 for input
$cBox2 = New-Object “System.Windows.Forms.combobox”;
$cBox2.Left = 150;
$cBox2.Top = 80;
$cBox2.width = 200;
###############"Add descriptions to combo box"##############
$NameHash = #{}
import-csv "C:\Users\Komp\Desktop\1.csv" | ForEach-Object {
$cBox2.Items.Add($_.ServerName)
}
#############define OK button
$button = New-Object “System.Windows.Forms.Button”;
$button.Left = 360;
$button.Top = 45;
$button.Width = 100;
$button.Text = “Ok”;
$Button.Cursor = [System.Windows.Forms.Cursors]::Hand
$Button.Font = New-Object System.Drawing.Font("Times New Roman",12,[System.Drawing.FontStyle]::BOLD)
############# This is when you have to close the form after getting values
$eventHandler = [System.EventHandler]{
$cBox2.Text;
$form.Close();};
$button.Add_Click($eventHandler) ;
#############Add controls to all the above objects defined
$form.Controls.Add($button);
$form.Controls.Add($textLabel2);
$form.Controls.Add($cBox2);
#$ret = $form.ShowDialog();
#################return values
$button.add_Click({
#$output = $cBox2.SelectedItem.Text #Your answer here
Set-Variable -Name locationResult -Value $combobox1.selectedItem -Force -Scope Script # Use this
$script:locationResult = $cBox2.selectedItem # or this to retrieve the user selection
})
$form.Controls.Add($button)
$form.Controls.Add($cBox2)
$form.ShowDialog()