SelectBuildingAndOfficeForm.ps1 A piece of DropDown Forms sample code

SelectBuildingAndOfficeForm.ps1

# DropDown Data
$office = @{
    'HQ' = 'Ground floor','1st floor','2nd floor','3rd floor'
    'Garage' = 'Shop floor','Office'
    'Sales office' = 'Ground floor','1st floor'
}

# Load assemblies
[void][System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void][System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
$script:LocationWidth  = 10
$script:LocationHeight = 10
$script:DefaultControlWidth  = 260
$script:DefaultControlHeight = 25
$form = New-Object System.Windows.Forms.Form
$form.width = 300
$form.height = 200
$form.Text = "Floor selector."

# Functions to get the values from a growing stack of controls
Function Get-NextControlLocation {
    New-Object -TypeName System.Drawing.Size -ArgumentList $script:LocationWidth,$script:LocationHeight
    $script:LocationWidth  = $script:LocationWidth
    $script:LocationHeight = $script:LocationHeight+30
}
Function Get-DefaultControlSize {
    New-Object -TypeName System.Drawing.Size -ArgumentList $script:DefaultControlWidth,$script:DefaultControlHeight
}

# Define the controls
$label = new-object System.Windows.Forms.Label
$label.Location = Get-NextControlLocation
$label.size = Get-DefaultControlSize
$label.Text = "Select the office you are working in." 
$form.Controls.Add($label)

$dropDownBuilding = New-Object System.Windows.Forms.ComboBox
$dropDownBuilding.Location = Get-NextControlLocation
$dropDownBuilding.Size = Get-DefaultControlSize
$dropDownBuilding.Items.AddRange($office.Keys)
$form.Controls.Add($dropDownBuilding)

$dropDownOffice = New-Object System.Windows.Forms.ComboBox
$dropDownOffice.Location = Get-NextControlLocation
$dropDownOffice.Size = Get-DefaultControlSize
$form.Controls.Add($dropDownOffice)
$dropDownOffice.Enabled = $false

$buttonOK = New-Object System.Windows.Forms.Button
$buttonOK.Location = Get-NextControlLocation
$buttonOK.Size = Get-DefaultControlSize 
$buttonOK.Text = "OK"
$form.Controls.Add($buttonOK)

$buttonCancel = New-Object System.Windows.Forms.Button
$buttonCancel.Location = Get-NextControlLocation
$buttonCancel.Size = Get-DefaultControlSize
$buttonCancel.Text = "Cancel"
$form.Controls.Add($buttonCancel)

# Define events
$clicked_Cancel = {
        $form.Close()
}
$clicked_OK = {
    $selectedBuilding = $dropDownBuilding.SelectedItem
    $selectedOffice   = $dropDownOffice.SelectedItem
    if($selectedBuilding -eq $null -or $selectedOffice -eq $null) {    
        [System.Windows.Forms.MessageBox]::Show("Please select both building and floor.")
    } else {
        [System.Windows.Forms.MessageBox]::Show(("Selected building {0}, selected office {1}" -f $selectedBuilding,$selectedOffice ))
        $form.Close()       
    }
}
$selected_Building = {
    $dropDownOffice.Enabled = $true
    $dropDownOffice.Items.Clear()
    $dropDownOffice.Items.AddRange($office[$dropDownBuilding.SelectedItem])
}

# Wire the events up
$dropDownBuilding.Add_SelectedValueChanged($selected_Building)
$buttonOK.Add_Click($clicked_OK)
$buttonCancel.Add_Click($clicked_Cancel)

# Show and activate the form
$form.Add_Shown({$form.Activate()})
$form.ShowDialog()