Form.Closed Evento

Definición

Se produce cuando el formulario está cerrado.Occurs when the form is closed.

public:
 event EventHandler ^ Closed;
[System.ComponentModel.Browsable(false)]
public event EventHandler Closed;
public event EventHandler Closed;
[<System.ComponentModel.Browsable(false)>]
member this.Closed : EventHandler 
member this.Closed : EventHandler 
Public Custom Event Closed As EventHandler 

Tipo de evento

EventHandler
Atributos

Ejemplos

En el ejemplo siguiente se muestra cómo usar SetDesktopLocation los Closed miembros,, Load , Activated y Activate .The following example demonstrates how to use the SetDesktopLocation, Closed, Load, Activated, and Activate members. Para ejecutar el ejemplo, pegue el código siguiente en un formulario denominado Form1 que contenga un Button denominado Button1 y dos Label controles denominados Label1 y Label2 .To run the example, paste the following code in a form called Form1 containing a Button called Button1 and two Label controls called Label1 and Label2.

static int x = 200;
static int y = 200;
void Button1_Click( System::Object^ sender, System::EventArgs^ e )
{
   
   // Create a new Form1 and set its Visible property to true.
   Form1^ form2 = gcnew Form1;
   form2->Visible = true;
   
   // Set the new form's desktop location so it  
   // appears below and to the right of the current form.
   form2->SetDesktopLocation( x, y );
   x += 30;
   y += 30;
   
   // Keep the current form active by calling the Activate
   // method.
   this->Activate();
   this->Button1->Enabled = false;
}


// Updates the label text to reflect the current values of x 
// and y, which was were incremented in the Button1 control's 
// click event.
void Form1_Activated( Object^ sender, System::EventArgs^ e )
{
   Label1->Text = String::Format( "x: {0} y: {1}", x, y );
   Label2->Text = String::Format( "Number of forms currently open: {0}", count );
}

static int count = 0;
void Form1_Closed( Object^ sender, System::EventArgs^ e )
{
   count -= 1;
}

void Form1_Load( Object^ sender, System::EventArgs^ e )
{
   count += 1;
}
static int x = 200;
static int y = 200;

private void Button1_Click(System.Object sender, 
    System.EventArgs e)
{
    // Create a new Form1 and set its Visible property to true.
    Form1 form2 = new Form1();
    form2.Visible = true;

    // Set the new form's desktop location so it  
    // appears below and to the right of the current form.
    form2.SetDesktopLocation(x, y);
    x += 30;
    y += 30;

    // Keep the current form active by calling the Activate
    // method.
    this.Activate();
    this.Button1.Enabled = false;
}

// Updates the label text to reflect the current values of x 
// and y, which was were incremented in the Button1 control's 
// click event.
private void Form1_Activated(object sender, System.EventArgs e)
{
    Label1.Text = "x: "+x+" y: "+y;
    Label2.Text = "Number of forms currently open: "+count;
}

static int count = 0;

private void Form1_Closed(object sender, System.EventArgs e)
{
    count -= 1;
}

private void Form1_Load(object sender, System.EventArgs e)
{
    count += 1;
}
Shared x As Integer = 200
Shared y As Integer = 200

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    ' Create a new Form1 and set its Visible property to true.
    Dim form2 As New Form1
    form2.Visible = True

    ' Set the new form's desktop location so it appears below and 
    ' to the right of the current form.
    form2.SetDesktopLocation(x, y)
    x += 30
    y += 30

    ' Keep the current form active by calling the Activate method.
    Me.Activate()
    Me.Button1.Enabled = False
End Sub



' Updates the label text to reflect the current values of x and y, 
' which was were incremented in the Button1 control's click event.
Private Sub Form1_Activated(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Activated
    Label1.Text = "x: " & x & " y: " & y
    Label2.Text = "Number of forms currently open: " & count
End Sub

Shared count As Integer = 0

Private Sub Form1_Closed(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Closed
    count -= 1
End Sub

Private Sub Form1_Load(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Load
    count += 1
End Sub

Comentarios

Precaución

El Closed evento está obsoleto en la versión .NET Framework 2,0; Utilice FormClosed en su lugar el evento.The Closed event is obsolete in the .NET Framework version 2.0; use the FormClosed event instead.

Este evento se produce después de que el usuario haya cerrado el formulario o el Close método del formulario.This event occurs after the form has been closed by the user or by the Close method of the form. Para evitar que un formulario se cierre, controle el Closing evento y establezca la Cancel propiedad del que CancelEventArgs se ha pasado al controlador de eventos a true .To prevent a form from closing, handle the Closing event and set the Cancel property of the CancelEventArgs passed to your event handler to true.

Puede usar este evento para realizar tareas como liberar recursos utilizados por el formulario y guardar información especificada en el formulario o actualizar su formulario primario.You can use this event to perform tasks such as freeing resources used by the form and to save information entered in the form or to update its parent form.

Precaución

Los Form.Closed Form.Closing eventos y no se generan cuando Application.Exit se llama al método para salir de la aplicación.The Form.Closed and Form.Closing events are not raised when the Application.Exit method is called to exit your application. Si tiene código de validación en cualquiera de estos eventos que se debe ejecutar, debe llamar al Form.Close método para cada formulario abierto individualmente antes de llamar al Exit método.If you have validation code in either of these events that must be executed, you should call the Form.Close method for each open form individually before calling the Exit method.

Si el formulario es un formulario MDI primario, los Closing eventos de todos los formularios MDI secundarios se generan antes de que se genere el evento del formulario MDI principal Closing .If the form is an MDI parent form, the Closing events of all MDI child forms are raised before the MDI parent form's Closing event is raised. Además, los Closed eventos de todos los formularios MDI secundarios se generan antes de que Closed se produzca el evento del formulario primario MDI.In addition, the Closed events of all MDI child forms are raised before the Closed event of the MDI parent form is raised.

Para obtener más información sobre el manejo de eventos, consulte controlar y provocar eventos.For more information about handling events, see Handling and Raising Events.

Se aplica a

Consulte también