KeyPressEventArgs.Handled KeyPressEventArgs.Handled KeyPressEventArgs.Handled KeyPressEventArgs.Handled Property

Definición

Obtiene o establece un valor que indica si se controló el evento KeyPress.Gets or sets a value indicating whether the KeyPress event was handled.

public:
 property bool Handled { bool get(); void set(bool value); };
public bool Handled { get; set; }
member this.Handled : bool with get, set
Public Property Handled As Boolean

Valor de propiedad

true si el evento está controlado; en caso contrario, false.true if the event is handled; otherwise, false.

Ejemplos

En el ejemplo siguiente se TextBox crea un control.The following example creates a TextBox control. El keypressed método utiliza la KeyChar propiedad para comprobar si se ha presionado la tecla entrar.The keypressed method uses the KeyChar property to check whether the ENTER key is pressed. Si se presiona la tecla entrar, la Handled propiedad se establece en true, lo que indica que el evento está controlado.If the ENTER key is pressed, the Handled property is set to true, which indicates the event is handled.

#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Windows::Forms;

public ref class Form1: public Form
{
public:
   Form1()
   {
      // Create a TextBox control.
      TextBox^ tb = gcnew TextBox;
      this->Controls->Add( tb );
      tb->KeyPress += gcnew KeyPressEventHandler( this, &Form1::keypressed );
   }

private:
   void keypressed( Object^ /*o*/, KeyPressEventArgs^ e )
   {
      // The keypressed method uses the KeyChar property to check 
      // whether the ENTER key is pressed. 
      // If the ENTER key is pressed, the Handled property is set to true, 
      // to indicate the event is handled.
      if ( e->KeyChar == (char)13 )
            e->Handled = true;
   }
};

int main()
{
   Application::Run( gcnew Form1 );
}

using System;
using System.Windows.Forms;

public class Form1: Form
{
    public Form1()
    {
        // Create a TextBox control.
        TextBox tb = new TextBox();
        this.Controls.Add(tb);
        tb.KeyPress += new KeyPressEventHandler(keypressed);
    }

    private void keypressed(Object o, KeyPressEventArgs e)
    {
        // The keypressed method uses the KeyChar property to check 
        // whether the ENTER key is pressed. 

        // If the ENTER key is pressed, the Handled property is set to true, 
        // to indicate the event is handled.
        if (e.KeyChar == (char)Keys.Return)
        {
            e.Handled = true;
        }
    }

    public static void Main()
    {
        Application.Run(new Form1());
    }
}
Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    Public Sub New()
        ' Create a TextBox control.
        Dim tb As New TextBox()
        Me.Controls.Add(tb)
        AddHandler tb.KeyPress, AddressOf keypressed
    End Sub

    Private Sub keypressed(ByVal o As [Object], ByVal e As KeyPressEventArgs)
        ' The keypressed method uses the KeyChar property to check 
        ' whether the ENTER key is pressed. 

        ' If the ENTER key is pressed, the Handled property is set to true, 
        ' to indicate the event is handled.

        If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then
            e.Handled = True
        End If
    End Sub

    Public Shared Sub Main()
        Application.Run(New Form1())
    End Sub
End Class 'Form1

Comentarios

Si no se controla el evento, se enviará al sistema operativo para su procesamiento predeterminado.If the event is not handled, it will be sent to the operating system for default processing. Establezca Handled KeyPress en true para cancelar el evento.Set Handled to true to cancel the KeyPress event.

Se aplica a

Consulte también: