Form.CancelButton Form.CancelButton Form.CancelButton Form.CancelButton Property

Definición

Obtiene o establece el control de botón que se activará cuando el usuario presione la tecla ESC.Gets or sets the button control that is clicked when the user presses the ESC key.

public:
 property System::Windows::Forms::IButtonControl ^ CancelButton { System::Windows::Forms::IButtonControl ^ get(); void set(System::Windows::Forms::IButtonControl ^ value); };
public System.Windows.Forms.IButtonControl CancelButton { get; set; }
member this.CancelButton : System.Windows.Forms.IButtonControl with get, set
Public Property CancelButton As IButtonControl

Valor de propiedad

IButtonControl que representa el botón Cancelar del formulario.An IButtonControl that represents the cancel button for the form.

Ejemplos

En el ejemplo de código siguiente se crea una nueva instancia de un Form y llama a la ShowDialog método para mostrar el formulario como cuadro de diálogo.The following code example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. El ejemplo se establece la FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox, y StartPosition propiedades para cambiar la apariencia y funcionalidad del formulario a un cuadro de diálogo.The example sets the FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox, and StartPosition properties to change the appearance and functionality of the form to a dialog box. El ejemplo también usa el Add método del formulario Controls colección para agregar dos Button controles.The example also uses the Add method of the form's Controls collection to add two Button controls. El ejemplo se usa el HelpButton propiedad para mostrar un botón de ayuda en la barra de título del cuadro de diálogo.The example uses the HelpButton property to display a help button in the caption bar of the dialog box.

public:
   void CreateMyForm()
   {
      // Create a new instance of the form.
      Form^ form1 = gcnew Form;
      // Create two buttons to use as the accept and cancel buttons.
      Button^ button1 = gcnew Button;
      Button^ button2 = gcnew Button;
      
      // Set the text of button1 to "OK".
      button1->Text = "OK";
      // Set the position of the button on the form.
      button1->Location = Point(10,10);
      // Set the text of button2 to "Cancel".
      button2->Text = "Cancel";
      // Set the position of the button based on the location of button1.
      button2->Location =
         Point( button1->Left, button1->Height + button1->Top + 10 );
      // Set the caption bar text of the form.   
      form1->Text = "My Dialog Box";
      // Display a help button on the form.
      form1->HelpButton = true;
      
      // Define the border style of the form to a dialog box.
      form1->FormBorderStyle = ::FormBorderStyle::FixedDialog;
      // Set the MaximizeBox to false to remove the maximize box.
      form1->MaximizeBox = false;      
      // Set the MinimizeBox to false to remove the minimize box.
      form1->MinimizeBox = false;
      // Set the accept button of the form to button1.
      form1->AcceptButton = button1;
      // Set the cancel button of the form to button2.
      form1->CancelButton = button2;
      // Set the start position of the form to the center of the screen.
      form1->StartPosition = FormStartPosition::CenterScreen;
      
      // Add button1 to the form.
      form1->Controls->Add( button1 );
      // Add button2 to the form.
      form1->Controls->Add( button2 );
      // Display the form as a modal dialog box.
      form1->ShowDialog();
   }
public void CreateMyForm()
{
   // Create a new instance of the form.
   Form form1 = new Form();
   // Create two buttons to use as the accept and cancel buttons.
   Button button1 = new Button ();
   Button button2 = new Button ();
  
   // Set the text of button1 to "OK".
   button1.Text = "OK";
   // Set the position of the button on the form.
   button1.Location = new Point (10, 10);
   // Set the text of button2 to "Cancel".
   button2.Text = "Cancel";
   // Set the position of the button based on the location of button1.
   button2.Location
      = new Point (button1.Left, button1.Height + button1.Top + 10);
   // Set the caption bar text of the form.   
   form1.Text = "My Dialog Box";
   // Display a help button on the form.
   form1.HelpButton = true;

   // Define the border style of the form to a dialog box.
   form1.FormBorderStyle = FormBorderStyle.FixedDialog;
   // Set the MaximizeBox to false to remove the maximize box.
   form1.MaximizeBox = false;
   // Set the MinimizeBox to false to remove the minimize box.
   form1.MinimizeBox = false;
   // Set the accept button of the form to button1.
   form1.AcceptButton = button1;
   // Set the cancel button of the form to button2.
   form1.CancelButton = button2;
   // Set the start position of the form to the center of the screen.
   form1.StartPosition = FormStartPosition.CenterScreen;
   
   // Add button1 to the form.
   form1.Controls.Add(button1);
   // Add button2 to the form.
   form1.Controls.Add(button2);
   
   // Display the form as a modal dialog box.
   form1.ShowDialog();
}
Public Sub CreateMyForm()
    ' Create a new instance of the form.
    Dim form1 As New Form()
    ' Create two buttons to use as the accept and cancel buttons.
    Dim button1 As New Button()
    Dim button2 As New Button()
       
    ' Set the text of button1 to "OK".
    button1.Text = "OK"
    ' Set the position of the button on the form.
    button1.Location = New Point(10, 10)
    ' Set the text of button2 to "Cancel".
    button2.Text = "Cancel"
    ' Set the position of the button based on the location of button1.
    button2.Location = _
       New Point(button1.Left, button1.Height + button1.Top + 10)
    ' Set the caption bar text of the form.   
    form1.Text = "My Dialog Box"
    ' Display a help button on the form.
    form1.HelpButton = True
       
    ' Define the border style of the form to a dialog box.
    form1.FormBorderStyle = FormBorderStyle.FixedDialog
    ' Set the MaximizeBox to false to remove the maximize box.
    form1.MaximizeBox = False
    ' Set the MinimizeBox to false to remove the minimize box.
    form1.MinimizeBox = False
    ' Set the accept button of the form to button1.
    form1.AcceptButton = button1
    ' Set the cancel button of the form to button2.
    form1.CancelButton = button2
    ' Set the start position of the form to the center of the screen.
    form1.StartPosition = FormStartPosition.CenterScreen
       
    ' Add button1 to the form.
    form1.Controls.Add(button1)
    ' Add button2 to the form.
    form1.Controls.Add(button2)
       
    ' Display the form as a modal dialog box.
    form1.ShowDialog()
End Sub

Comentarios

El botón Cancelar de un formulario es el control de botón que se hace clic en cada vez que el usuario presiona la tecla ESC.The cancel button for a form is the button control that is clicked whenever the user presses the ESC key. El botón asignado a esta propiedad debe ser un IButtonControl que se encuentre en el formulario actual o en un contenedor en el formulario actual.The button assigned to this property must be an IButtonControl that is on the current form or located within a container on the current form.

Esta propiedad le permite designar una acción predeterminada que se producen cuando el usuario presiona la tecla ESC en la aplicación.This property allows you to designate a default action to occur when the user presses the ESC key in your application. Puede utilizar esta propiedad para permitir al usuario navegar rápidamente un formulario sencillo al permitir que simplemente presione la tecla ESC para cerrar una ventana sin confirmar los cambios en lugar de forma manual al hacer clic en el botón de cancelación con el mouse.You can use this property to allow the user to quickly navigate a simple form by allowing them to simply press the ESC key to close a window without committing changes instead of manually clicking the cancel button with their mouse.

CancelButton puede no funcionar si otro control en el formulario intercepta la tecla ESC.CancelButton may not work if another control on the form intercepts the ESC key. Por ejemplo, si tiene un ComboBox ESC abierto en el formulario, se cerrará el ComboBox en lugar de cerrar el formulario.For example, if you have a ComboBox open on your form, ESC will close the ComboBox instead of closing the Form.

El IButtonControl objeto asignado a CancelButton debe ser visible en el formulario, o bien presionando la tecla ESC clave no tendrá ningún efecto.The IButtonControl object assigned to CancelButton must be visible on the form, or else pressing the ESC key will have no effect.

Se aplica a

Consulte también: