Question [RESOLU]Formulaires .net et powershell

function Test( $FormGen ){
    $FormGen.Text
}

# Creation du formulaire
    $Form = New-Object System.Windows.Forms.Form
    $Form.Text = 'Intégration de postes'
    $Form.Size = New-Object System.Drawing.Size( 1000 , 550 )
    $Form.SizeGripStyle = 'Hide'    
    $Form.MaximizeBox = $false
    $Form.ShowIcon = $True
    $Form.ShowInTaskbar = $True
    $Form.TopMost = $True    
    
    $Form.StartPosition = "CenterScreen"

    # Create tab controls
    $TabControl = New-object System.Windows.Forms.TabControl
    $TabControl.DataBindings.DefaultDataSourceUpdateMode = 0
    $TabControl.Location = New-Object System.Drawing.Size( 10 , 10 )
    $TabControl.Size = New-Object System.Drawing.Size( 480 , 490 )
    $Form.Controls.Add( $TabControl )

    # Crée l'onglet "Nouvel Ordinateur"
    $NewComputerTabPage = New-Object System.Windows.Forms.TabPage
    $NewComputerTabPage.DataBindings.DefaultDataSourceUpdateMode = 0
    $NewComputerTabPage.UseVisualStyleBackColor = $True
    $NewComputerTabPage.Text = 'Ordinateur'
    $NewComputerTabPage.BackColor = 'LightSkyBlue' 
    $TabControl.Controls.Add( $NewComputerTabPage )  
        
    # Création du groupe infos ordinateur 
    $NewComputerInfoGroupBox = New-Object System.Windows.Forms.GroupBox
    $NewComputerInfoGroupBox.Location = New-Object System.Drawing.Size( 10, 10 )
    $NewComputerInfoGroupBox.Size = New-Object System.Drawing.Size( 450 , 125 )
    $NewComputerInfoGroupBox.Text = 'Informations Ordinateur'
    $NewComputerTabPage.Controls.Add( $NewComputerInfoGroupBox )           
    
    # Box nom Courant PC
    $OldComputerNameLabel_NewPage = New-Object System.Windows.Forms.Label
    $OldComputerNameLabel_NewPage.Location = New-Object System.Drawing.Size( 12 , 35 )
    $OldComputerNameLabel_NewPage.Size = New-Object System.Drawing.Size( 80 , 22 )
    $OldComputerNameLabel_NewPage.Text = 'Nom Actuel'
    $NewComputerInfoGroupBox.Controls.Add( $OldComputerNameLabel_NewPage )
    
    # Nom Actuel du poste text box
    $OldComputerNameTextBox_NewPage = New-Object System.Windows.Forms.TextBox
    $OldComputerNameTextBox_NewPage.ReadOnly = $True
    $OldComputerNameTextBox_NewPage.Location = New-Object System.Drawing.Size( 100 , 34 )
    $OldComputerNameTextBox_NewPage.Size = New-Object System.Drawing.Size( 120 , 20 )
    $OldComputerNameTextBox_NewPage.Text = "Ordi1"
    $NewComputerInfoGroupBox.Controls.Add( $OldComputerNameTextBox_NewPage ) 
    
    Test $OldComputerNameTextBox_NewPage