ControlValuePropertyAttribute.DefaultValue Propiedad

Definición

Obtiene el valor predeterminado de la propiedad predeterminada de un control.Gets the default value for the default property of a control.

public:
 property System::Object ^ DefaultValue { System::Object ^ get(); };
public object DefaultValue { get; }
member this.DefaultValue : obj
Public ReadOnly Property DefaultValue As Object

Valor de propiedad

El valor predeterminado de la propiedad predeterminada de un control.The default value for the default property of a control.

Ejemplos

En el ejemplo de código siguiente se muestra cómo DefaultValue establecer la propiedad aplicando un ControlValuePropertyAttribute atributo a un control personalizado.The following code example demonstrates how to set the DefaultValue property by applying a ControlValuePropertyAttribute attribute to a custom control.


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Samples.AspNet.CS.Controls
{
    // Set ControlValueProperty attribute to specify the default
    // property of this control that a ControlParameter object 
    // binds to at run time.
    [DefaultProperty("Text")]
    [ControlValueProperty("Text", "Default Text")]
    public class SimpleCustomControl : WebControl
    {
        private string text;

        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("")]
        public string Text
        {
            get
            {
                return text;
            }
            set
            {
                text = value;
            }
        }

        protected override void Render(HtmlTextWriter output)
        {
            output.Write(Text);
        }
    }
}


Imports System.ComponentModel
Imports System.Web.UI

Namespace Samples.AspNet.VB.Controls

    ' Set ControlValueProperty attribute to specify the default
    ' property of this control that a ControlParameter object 
    ' binds to at run time.
    <DefaultProperty("Text"), ControlValueProperty("Text", "DefaultText")> Public Class SimpleCustomControl
        Inherits System.Web.UI.WebControls.WebControl

        Dim _text As String

        <Bindable(True), Category("Appearance"), DefaultValue("")> Property [Text]() As String
            Get
                Return _text
            End Get

            Set(ByVal Value As String)
                _text = Value
            End Set
        End Property

        Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
            output.Write([Text])
        End Sub

    End Class

End Namespace

Comentarios

Cuando no se establece la propiedad Name especificada por la propiedad, utilice la DefaultValue propiedad para determinar el valor predeterminado de la propiedad.When the property specified by the Name property is not set, use the DefaultValue property to determine the default value for the property.

Se aplica a

Consulte también: