Выгрузка c DHCP сервера, Powershell GUI

Add-Type -Assembly System.Windows.Forms
Add-Type -Assembly System.Drawing
 
$form = New-Object System.Windows.Forms.Form
$Form.Text = 'Главное меню'
$Form.Width = 700
$form.Height = 600
$form.StartPosition = 'CenterScreen'
$form.Font = New-Object System.Drawing.Font ("OldStyle",10)
 
function DHCPinfo 
{
$ServerName = $TextBox.Text
 
   $checkDHCP = Get-DHCPServerv4Scope -ComputerName $ServerName | select ScopeID, SubnetMasK | 
    ForEach-Object {Get-DHCPServerv4Lease -ScopeId $_.ScopeId -ComputerName $Servername -AllLeases  |
    Select-Object HostName,SubnetMasK,ScopeId,IPAddress,AddressState }
 
$list = New-Object System.collections.ArrayList
$list.AddRange($checkDHCP)
$dataGridView.DataSource = $list
}
 
$dataGridView = New-Object System.Windows.Forms.DataGridView
$dataGridView.Location = New-Object System.Drawing.Size(10,150) 
$dataGridView.Width = 600
$dataGridView.Height = 400
$dataGridView.size = New-Object System.Drawing.Size(600,400) 
$dataGridView.ReadOnly = $true
$dataGridView.ColumnHeadersVisible = $true
 
$form.Controls.Add($dataGridView)
 
$Form.Controls.Add($outputBox) 
 
$label1 = New-Object System.Windows.Forms.Label
$label1.Location = New-Object System.Drawing.Point(20,40)
$label1.AutoSize = $True
$label1.Text = 'Пожалуйста, введите имя DHCP сервера:'
 
$form.Controls.Add($label1)
 
$TextBox = New-Object System.Windows.Forms.TextBox
$TextBox.Location  = New-Object System.Drawing.Point(40,70)
$TextBox.Size = New-Object System.Drawing.Size(200,10)
 
$form.Controls.Add($TextBox)
 
$Button = New-Object System.Windows.Forms.Button 
$Button.Location = New-Object System.Drawing.Size(400,30) 
$Button.Size = New-Object System.Drawing.Size(100,80) 
$Button.Text = "Загрузить" 
$Button.Add_Click({DHCPinfo}) 
 
$Form.Controls.Add($Button) 
 
[void] $Form.ShowDialog()

$checkDHCP = Get-DHCPServerv4Scope -ComputerName $ServerName | 
    ForEach {$SubnetMasK = $_.SubnetMasK; $_ | Get-DHCPServerv4Lease -AllLeases | 
    Select HostName,@{N='SubnetMasK';E={$SubnetMasK}},ScopeId,IPAddress,AddressState}