PropertyDescriptor PropertyDescriptor PropertyDescriptor PropertyDescriptor Class

Definición

Proporciona una abstracción de una propiedad en una clase. Provides an abstraction of a property on a class.

public ref class PropertyDescriptor abstract : System::ComponentModel::MemberDescriptor
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class PropertyDescriptor : System.ComponentModel.MemberDescriptor
type PropertyDescriptor = class
    inherit MemberDescriptor
Public MustInherit Class PropertyDescriptor
Inherits MemberDescriptor
Herencia
PropertyDescriptorPropertyDescriptorPropertyDescriptorPropertyDescriptor
Derivado
Atributos

Ejemplos

El siguiente ejemplo de código se basa en el ejemplo de la PropertyDescriptorCollection clase.The following code example is built upon the example in the PropertyDescriptorCollection class. Imprime la información (categoría, descripción, nombre para mostrar) del texto de un botón en un cuadro de texto.It prints the information (category, description, display name) of the text of a button in a text box. Se supone que button1 y textbox1 se han creado instancias en un formulario.It assumes that button1 and textbox1 have been instantiated on a form.

// Creates a new collection and assign it the properties for button1.
PropertyDescriptorCollection^ properties = TypeDescriptor::GetProperties( button1 );

// Sets an PropertyDescriptor to the specific property.
System::ComponentModel::PropertyDescriptor^ myProperty = properties->Find( "Text", false );

// Prints the property and the property description.
textBox1->Text = String::Concat( myProperty->DisplayName, "\n" );
textBox1->Text = String::Concat( textBox1->Text, myProperty->Description, "\n" );
textBox1->Text = String::Concat( textBox1->Text, myProperty->Category, "\n" );
// Creates a new collection and assign it the properties for button1.
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(button1);

// Sets an PropertyDescriptor to the specific property.
System.ComponentModel.PropertyDescriptor myProperty = properties.Find("Text", false);

// Prints the property and the property description.
textBox1.Text = myProperty.DisplayName+ '\n' ;
textBox1.Text += myProperty.Description + '\n';
textBox1.Text += myProperty.Category + '\n';
' Creates a new collection and assign it the properties for button1.
Dim properties As PropertyDescriptorCollection = TypeDescriptor.GetProperties(Button1)

' Sets an PropertyDescriptor to the specific property.
Dim myProperty As PropertyDescriptor = properties.Find("Text", False)

' Prints the property and the property description.
TextBox1.Text += myProperty.DisplayName & Microsoft.VisualBasic.ControlChars.Cr
TextBox1.Text += myProperty.Description & Microsoft.VisualBasic.ControlChars.Cr
TextBox1.Text += myProperty.Category & Microsoft.VisualBasic.ControlChars.Cr

En el ejemplo de código siguiente se muestra cómo implementar un descriptor de propiedad personalizada que proporciona un contenedor en torno a una propiedad de solo lectura.The following code example shows how to implement a custom property descriptor that provides a read-only wrapper around a property. El SerializeReadOnlyPropertyDescriptor se utiliza en un diseñador personalizado para proporcionar un descriptor de propiedad de solo lectura para el control Size propiedad.The SerializeReadOnlyPropertyDescriptor is used in a custom designer to provide a read-only property descriptor for the control's Size property.

using System;
using System.Collections;
using System.ComponentModel;
using System.Text;

namespace ReadOnlyPropertyDescriptorTest
{
    // The SerializeReadOnlyPropertyDescriptor shows how to implement a 
    // custom property descriptor. It provides a read-only wrapper 
    // around the specified PropertyDescriptor. 
    internal sealed class SerializeReadOnlyPropertyDescriptor : PropertyDescriptor
    {
        private PropertyDescriptor _pd = null;

        public SerializeReadOnlyPropertyDescriptor(PropertyDescriptor pd)
            : base(pd)
        {
            this._pd = pd;
        }

        public override AttributeCollection Attributes
        {
            get
            {
                return( AppendAttributeCollection(
                    this._pd.Attributes, 
                    ReadOnlyAttribute.Yes) );
            }
        }

        protected override void FillAttributes(IList attributeList)
        {
            attributeList.Add(ReadOnlyAttribute.Yes);
        }

        public override Type ComponentType
        {
            get
            {
                return this._pd.ComponentType;
            }
        }

        
        // The type converter for this property.
        // A translator can overwrite with its own converter.
        public override TypeConverter Converter
        {
            get
            {
                return this._pd.Converter;
            }
        }

        
        // Returns the property editor 
        // A translator can overwrite with its own editor.
        public override object GetEditor(Type editorBaseType)
        {
            return this._pd.GetEditor(editorBaseType);
        }

        // Specifies the property is read only.
        public override bool IsReadOnly
        {
            get
            {
                return true;
            }
        }

        public override Type PropertyType
        {
            get
            {
                return this._pd.PropertyType;
            }
        }

        public override bool CanResetValue(object component)
        {
            return this._pd.CanResetValue(component);
        }

     
        public override object GetValue(object component)
        {
            return this._pd.GetValue(component);
        }

        public override void ResetValue(object component)
        {
            this._pd.ResetValue(component);
        }

        public override void SetValue(object component, object val)
        {
            this._pd.SetValue(component, val);
        }

        // Determines whether a value should be serialized.
        public override bool ShouldSerializeValue(object component)
        {
            bool result = this._pd.ShouldSerializeValue(component);

            if (!result)
            {
                DefaultValueAttribute dva = (DefaultValueAttribute)_pd.Attributes[typeof(DefaultValueAttribute)];
                if (dva != null)
                {
                    result = !Object.Equals(this._pd.GetValue(component), dva.Value);
                }
                else
                {
                    result = true;
                }
            }

            return result;
        }

        // The following Utility methods create a new AttributeCollection
        // by appending the specified attributes to an existing collection.
        static public AttributeCollection AppendAttributeCollection(
            AttributeCollection existing, 
            params Attribute[] newAttrs)
        {
            return new AttributeCollection(AppendAttributes(existing, newAttrs));
        }

        
        static public Attribute[] AppendAttributes(
            AttributeCollection existing, 
            params Attribute[] newAttrs)
        {
            if (existing == null)
            {
                throw new ArgumentNullException("existing");
            }

            if (newAttrs == null)
            {
                newAttrs = new Attribute[0];
            }

            Attribute[] attributes;

            Attribute[] newArray = new Attribute[existing.Count + newAttrs.Length];
            int actualCount = existing.Count;
            existing.CopyTo(newArray, 0);

            for (int idx = 0; idx < newAttrs.Length; idx++)
            {
                if (newAttrs[idx] == null)
                {
                    throw new ArgumentNullException("newAttrs");
                }

                // Check if this attribute is already in the existing
                // array.  If it is, replace it.
                bool match = false;
                for (int existingIdx = 0; existingIdx < existing.Count; existingIdx++)
                {
                    if (newArray[existingIdx].TypeId.Equals(newAttrs[idx].TypeId))
                    {
                        match = true;
                        newArray[existingIdx] = newAttrs[idx];
                        break;
                    }
                }

                if (!match)
                {
                    newArray[actualCount++] = newAttrs[idx];
                }
            }

            // If some attributes were collapsed, create a new array.
            if (actualCount < newArray.Length)
            {
                attributes = new Attribute[actualCount];
                Array.Copy(newArray, 0, attributes, 0, actualCount);
            }
            else
            {
                attributes = newArray;
            }

            return attributes;
        }
    }
}
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.Text

' The SerializeReadOnlyPropertyDescriptor shows how to implement a 
' custom property descriptor. It provides a read-only wrapper 
' around the specified PropertyDescriptor. 
Friend NotInheritable Class SerializeReadOnlyPropertyDescriptor
    Inherits PropertyDescriptor
    Private _pd As PropertyDescriptor = Nothing


    Public Sub New(ByVal pd As PropertyDescriptor)
        MyBase.New(pd)
        Me._pd = pd

    End Sub


    Public Overrides ReadOnly Property Attributes() As AttributeCollection
        Get
            Return AppendAttributeCollection(Me._pd.Attributes, ReadOnlyAttribute.Yes)
        End Get
    End Property


    Protected Overrides Sub FillAttributes(ByVal attributeList As IList)
        attributeList.Add(ReadOnlyAttribute.Yes)

    End Sub


    Public Overrides ReadOnly Property ComponentType() As Type
        Get
            Return Me._pd.ComponentType
        End Get
    End Property


    ' The type converter for this property.
    ' A translator can overwrite with its own converter.
    Public Overrides ReadOnly Property Converter() As TypeConverter
        Get
            Return Me._pd.Converter
        End Get
    End Property


    ' Returns the property editor 
    ' A translator can overwrite with its own editor.
    Public Overrides Function GetEditor(ByVal editorBaseType As Type) As Object
        Return Me._pd.GetEditor(editorBaseType)

    End Function

    ' Specifies the property is read only.
    Public Overrides ReadOnly Property IsReadOnly() As Boolean
        Get
            Return True
        End Get
    End Property


    Public Overrides ReadOnly Property PropertyType() As Type
        Get
            Return Me._pd.PropertyType
        End Get
    End Property


    Public Overrides Function CanResetValue(ByVal component As Object) As Boolean
        Return Me._pd.CanResetValue(component)

    End Function


    Public Overrides Function GetValue(ByVal component As Object) As Object
        Return Me._pd.GetValue(component)

    End Function


    Public Overrides Sub ResetValue(ByVal component As Object)
        Me._pd.ResetValue(component)

    End Sub


    Public Overrides Sub SetValue(ByVal component As Object, ByVal val As Object)
        Me._pd.SetValue(component, val)

    End Sub

    ' Determines whether a value should be serialized.
    Public Overrides Function ShouldSerializeValue(ByVal component As Object) As Boolean
        Dim result As Boolean = Me._pd.ShouldSerializeValue(component)

        If Not result Then
            Dim dva As DefaultValueAttribute = _
                CType(_pd.Attributes(GetType(DefaultValueAttribute)), DefaultValueAttribute)
            If Not (dva Is Nothing) Then
                result = Not [Object].Equals(Me._pd.GetValue(component), dva.Value)
            Else
                result = True
            End If
        End If

        Return result

    End Function


    ' The following Utility methods create a new AttributeCollection
    ' by appending the specified attributes to an existing collection.
    Public Shared Function AppendAttributeCollection( _
        ByVal existing As AttributeCollection, _
        ByVal ParamArray newAttrs() As Attribute) As AttributeCollection

        Return New AttributeCollection(AppendAttributes(existing, newAttrs))

    End Function

    Public Shared Function AppendAttributes( _
        ByVal existing As AttributeCollection, _
        ByVal ParamArray newAttrs() As Attribute) As Attribute()

        If existing Is Nothing Then
            Throw New ArgumentNullException("existing")
        End If

        If newAttrs Is Nothing Then
            newAttrs = New Attribute(-1) {}
        End If

        Dim attributes() As Attribute

        Dim newArray(existing.Count + newAttrs.Length) As Attribute
        Dim actualCount As Integer = existing.Count
        existing.CopyTo(newArray, 0)

        Dim idx As Integer
        For idx = 0 To newAttrs.Length
            If newAttrs(idx) Is Nothing Then
                Throw New ArgumentNullException("newAttrs")
            End If

            ' Check if this attribute is already in the existing
            ' array.  If it is, replace it.
            Dim match As Boolean = False
            Dim existingIdx As Integer
            For existingIdx = 0 To existing.Count
                If newArray(existingIdx).TypeId.Equals(newAttrs(idx).TypeId) Then
                    match = True
                    newArray(existingIdx) = newAttrs(idx)
                    Exit For
                End If
            Next existingIdx

            If Not match Then
                actualCount += 1
                newArray(actualCount) = newAttrs(idx)
            End If
        Next idx

        ' If some attributes were collapsed, create a new array.
        If actualCount < newArray.Length Then
            attributes = New Attribute(actualCount) {}
            Array.Copy(newArray, 0, attributes, 0, actualCount)
        Else
            attributes = newArray
        End If

        Return attributes

    End Function
End Class

Ejemplos de código siguientes muestran cómo usar el SerializeReadOnlyPropertyDescriptor en un diseñador personalizado.The following code examples show how to use the SerializeReadOnlyPropertyDescriptor in a custom designer.

using System;
using System.Collections;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms.Design;

namespace ReadOnlyPropertyDescriptorTest
{   
    class DemoControlDesigner : ControlDesigner
    {
        // The PostFilterProperties method replaces the control's 
        // Size property with a read-only Size property by using 
        // the SerializeReadOnlyPropertyDescriptor class.
        protected override void PostFilterProperties(IDictionary properties)
        {
            if (properties.Contains("Size"))
            {
                PropertyDescriptor original = properties["Size"] as PropertyDescriptor;
                SerializeReadOnlyPropertyDescriptor readOnlyDescriptor = 
                    new SerializeReadOnlyPropertyDescriptor(original);

                properties["Size"] = readOnlyDescriptor;
            }

            base.PostFilterProperties(properties);
        }
    }
}
Imports System
Imports System.Collections
Imports System.ComponentModel
Imports System.Text
Imports System.Windows.Forms.Design

Class DemoControlDesigner
    Inherits ControlDesigner
    
    ' The PostFilterProperties method replaces the control's 
    ' Size property with a read-only Size property by using 
    ' the SerializeReadOnlyPropertyDescriptor class.
    Protected Overrides Sub PostFilterProperties(ByVal properties As IDictionary) 
        If properties.Contains("Size") Then
            Dim original As PropertyDescriptor = properties("Size")
            
            Dim readOnlyDescriptor As New SerializeReadOnlyPropertyDescriptor(original)
            
            properties("Size") = readOnlyDescriptor
        End If
        
        MyBase.PostFilterProperties(properties)
    
    End Sub
End Class
using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace ReadOnlyPropertyDescriptorTest
{
    [Designer(typeof(DemoControlDesigner))]
    public class DemoControl : Control
    {
        public DemoControl()
        {
           
        }
    }
}
Imports System
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Text
Imports System.Windows.Forms
Imports System.Windows.Forms.Design


<Designer(GetType(DemoControlDesigner))>  _
Public Class DemoControl
    Inherits Control
    
    Public Sub New() 
    
    End Sub
End Class

Comentarios

Una descripción de una propiedad consta de un nombre, sus atributos, la clase de componente que está asociada la propiedad y el tipo de la propiedad.A description of a property consists of a name, its attributes, the component class that the property is associated with, and the type of the property.

PropertyDescriptor Proporciona los siguientes métodos y propiedades:PropertyDescriptor provides the following properties and methods:

PropertyDescriptor También proporciona las siguientes abstract propiedades y métodos:PropertyDescriptor also provides the following abstract properties and methods:

  • ComponentType contiene el tipo de componente que está enlazada esta propiedad.ComponentType contains the type of component this property is bound to.

  • IsReadOnly indica si esta propiedad es de solo lectura.IsReadOnly indicates whether this property is read-only.

  • PropertyType Obtiene el tipo de la propiedad.PropertyType gets the type of the property.

  • CanResetValue indica si al restablecer el componente cambia el valor del componente.CanResetValue indicates whether resetting the component changes the value of the component.

  • GetValue Devuelve el valor actual de la propiedad en un componente.GetValue returns the current value of the property on a component.

  • ResetValue Restablece el valor de esta propiedad del componente.ResetValue resets the value for this property of the component.

  • SetValue establece el valor del componente en un valor diferente.SetValue sets the value of the component to a different value.

  • ShouldSerializeValue indica si debe conservarse el valor de esta propiedad.ShouldSerializeValue indicates whether the value of this property needs to be persisted.

Normalmente, el abstract miembros se implementan mediante reflexión.Typically, the abstract members are implemented through reflection. Para obtener más información sobre la reflexión, vea los temas de reflexión.For more information about reflection, see the topics in Reflection.

Constructores

PropertyDescriptor(MemberDescriptor) PropertyDescriptor(MemberDescriptor) PropertyDescriptor(MemberDescriptor) PropertyDescriptor(MemberDescriptor)

Inicializa una nueva instancia de la clase PropertyDescriptor con el nombre y los atributos del MemberDescriptor especificado. Initializes a new instance of the PropertyDescriptor class with the name and attributes in the specified MemberDescriptor.

PropertyDescriptor(MemberDescriptor, Attribute[]) PropertyDescriptor(MemberDescriptor, Attribute[]) PropertyDescriptor(MemberDescriptor, Attribute[]) PropertyDescriptor(MemberDescriptor, Attribute[])

Inicializa una nueva instancia de la clase PropertyDescriptor con el nombre del MemberDescriptor especificado y los atributos de MemberDescriptor y la matriz Attribute. Initializes a new instance of the PropertyDescriptor class with the name in the specified MemberDescriptor and the attributes in both the MemberDescriptor and the Attribute array.

PropertyDescriptor(String, Attribute[]) PropertyDescriptor(String, Attribute[]) PropertyDescriptor(String, Attribute[]) PropertyDescriptor(String, Attribute[])

Inicializa una nueva instancia de la clase PropertyDescriptor con el nombre y los atributos especificados. Initializes a new instance of the PropertyDescriptor class with the specified name and attributes.

Propiedades

AttributeArray AttributeArray AttributeArray AttributeArray

Obtiene o establece una matriz de atributos. Gets or sets an array of attributes.

(Inherited from MemberDescriptor)
Attributes Attributes Attributes Attributes

Obtiene la colección de atributos de este miembro. Gets the collection of attributes for this member.

(Inherited from MemberDescriptor)
Category Category Category Category

Obtiene el nombre de la categoría a la que pertenece el miembro, tal como se especifica en CategoryAttribute. Gets the name of the category to which the member belongs, as specified in the CategoryAttribute.

(Inherited from MemberDescriptor)
ComponentType ComponentType ComponentType ComponentType

Cuando se reemplaza en una clase derivada, obtiene el tipo de componente al que está enlazada esta propiedad. When overridden in a derived class, gets the type of the component this property is bound to.

Converter Converter Converter Converter

Obtiene el convertidor de tipos de esta propiedad. Gets the type converter for this property.

Description Description Description Description

Obtiene la descripción del miembro tal como se especifica en DescriptionAttribute. Gets the description of the member, as specified in the DescriptionAttribute.

(Inherited from MemberDescriptor)
DesignTimeOnly DesignTimeOnly DesignTimeOnly DesignTimeOnly

Obtiene si este miembro debe establecerse sólo en tiempo de diseño según se especifica en DesignOnlyAttribute. Gets whether this member should be set only at design time, as specified in the DesignOnlyAttribute.

(Inherited from MemberDescriptor)
DisplayName DisplayName DisplayName DisplayName

Obtiene el nombre que se puede mostrar en una ventana, como la ventana Propiedades. Gets the name that can be displayed in a window, such as a Properties window.

(Inherited from MemberDescriptor)
IsBrowsable IsBrowsable IsBrowsable IsBrowsable

Obtiene un valor que indica si se puede examinar el miembro, según se especifica en BrowsableAttribute. Gets a value indicating whether the member is browsable, as specified in the BrowsableAttribute.

(Inherited from MemberDescriptor)
IsLocalizable IsLocalizable IsLocalizable IsLocalizable

Obtiene un valor que indica si esta propiedad se debe traducir, según se especifica en LocalizableAttribute. Gets a value indicating whether this property should be localized, as specified in the LocalizableAttribute.

IsReadOnly IsReadOnly IsReadOnly IsReadOnly

Cuando se reemplaza en una clase derivada, obtiene un valor que indica si esta propiedad es de sólo lectura. When overridden in a derived class, gets a value indicating whether this property is read-only.

Name Name Name Name

Obtiene el nombre del miembro. Gets the name of the member.

(Inherited from MemberDescriptor)
NameHashCode NameHashCode NameHashCode NameHashCode

Obtiene el código hash para el nombre del miembro, según se especifica en GetHashCode(). Gets the hash code for the name of the member, as specified in GetHashCode().

(Inherited from MemberDescriptor)
PropertyType PropertyType PropertyType PropertyType

Cuando se reemplaza en una clase derivada, obtiene el tipo de propiedad. When overridden in a derived class, gets the type of the property.

SerializationVisibility SerializationVisibility SerializationVisibility SerializationVisibility

Obtiene un valor que indica si esta propiedad se debe serializar, según se especifica en DesignerSerializationVisibilityAttribute. Gets a value indicating whether this property should be serialized, as specified in the DesignerSerializationVisibilityAttribute.

SupportsChangeEvents SupportsChangeEvents SupportsChangeEvents SupportsChangeEvents

Obtiene un valor que indica si las notificaciones de cambios de valores para esta propiedad se pueden originar fuera del descriptor de propiedades. Gets a value indicating whether value change notifications for this property may originate from outside the property descriptor.

Métodos

AddValueChanged(Object, EventHandler) AddValueChanged(Object, EventHandler) AddValueChanged(Object, EventHandler) AddValueChanged(Object, EventHandler)

Habilita la notificación a otros objetos cuando cambia esta propiedad. Enables other objects to be notified when this property changes.

CanResetValue(Object) CanResetValue(Object) CanResetValue(Object) CanResetValue(Object)

Cuando se reemplaza en una clase derivada, devuelve si al restablecer un objeto cambia su valor. When overridden in a derived class, returns whether resetting an object changes its value.

CreateAttributeCollection() CreateAttributeCollection() CreateAttributeCollection() CreateAttributeCollection()

Crea una colección de atributos mediante la matriz de atributos que se pasó al constructor. Creates a collection of attributes using the array of attributes passed to the constructor.

(Inherited from MemberDescriptor)
CreateInstance(Type) CreateInstance(Type) CreateInstance(Type) CreateInstance(Type)

Crea una instancia del tipo especificado. Creates an instance of the specified type.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Compara esto con otro objeto para ver si son equivalentes. Compares this to another object to see if they are equivalent.

FillAttributes(IList) FillAttributes(IList) FillAttributes(IList) FillAttributes(IList)

Agrega los atributos de PropertyDescriptor a la lista de atributos especificada en la clase principal. Adds the attributes of the PropertyDescriptor to the specified list of attributes in the parent class.

GetChildProperties() GetChildProperties() GetChildProperties() GetChildProperties()

Devuelve el valor predeterminado de PropertyDescriptorCollection. Returns the default PropertyDescriptorCollection.

GetChildProperties(Attribute[]) GetChildProperties(Attribute[]) GetChildProperties(Attribute[]) GetChildProperties(Attribute[])

Devuelve PropertyDescriptorCollection utilizando una matriz especificada de atributos como filtro. Returns a PropertyDescriptorCollection using a specified array of attributes as a filter.

GetChildProperties(Object) GetChildProperties(Object) GetChildProperties(Object) GetChildProperties(Object)

Devuelve PropertyDescriptorCollection para un objeto especificado. Returns a PropertyDescriptorCollection for a given object.

GetChildProperties(Object, Attribute[]) GetChildProperties(Object, Attribute[]) GetChildProperties(Object, Attribute[]) GetChildProperties(Object, Attribute[])

Devuelve PropertyDescriptorCollection de un objeto dado utilizando como filtro una matriz especificada de atributos. Returns a PropertyDescriptorCollection for a given object using a specified array of attributes as a filter.

GetEditor(Type) GetEditor(Type) GetEditor(Type) GetEditor(Type)

Obtiene un editor del tipo especificado. Gets an editor of the specified type.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Devuelve el código hash de este objeto. Returns the hash code for this object.

GetInvocationTarget(Type, Object) GetInvocationTarget(Type, Object) GetInvocationTarget(Type, Object) GetInvocationTarget(Type, Object)

Este método devuelve el objeto que se debe utilizar durante la invocación de miembros. This method returns the object that should be used during invocation of members.

GetType() GetType() GetType() GetType()

Obtiene el Type de la instancia actual. Gets the Type of the current instance.

(Inherited from Object)
GetTypeFromName(String) GetTypeFromName(String) GetTypeFromName(String) GetTypeFromName(String)

Devuelve un tipo mediante su nombre. Returns a type using its name.

GetValue(Object) GetValue(Object) GetValue(Object) GetValue(Object)

Cuando se reemplaza en una clase derivada, obtiene el valor actual de la propiedad de un componente. When overridden in a derived class, gets the current value of the property on a component.

GetValueChangedHandler(Object) GetValueChangedHandler(Object) GetValueChangedHandler(Object) GetValueChangedHandler(Object)

Recupera el conjunto actual de controladores de eventos ValueChanged para un componente concreto Retrieves the current set of ValueChanged event handlers for a specific component

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficial del Object actual. Creates a shallow copy of the current Object.

(Inherited from Object)
OnValueChanged(Object, EventArgs) OnValueChanged(Object, EventArgs) OnValueChanged(Object, EventArgs) OnValueChanged(Object, EventArgs)

Provoca el evento ValueChanged que se ha implementado. Raises the ValueChanged event that you implemented.

RemoveValueChanged(Object, EventHandler) RemoveValueChanged(Object, EventHandler) RemoveValueChanged(Object, EventHandler) RemoveValueChanged(Object, EventHandler)

Habilita la notificación a otros objetos cuando cambia esta propiedad. Enables other objects to be notified when this property changes.

ResetValue(Object) ResetValue(Object) ResetValue(Object) ResetValue(Object)

Cuando se reemplaza en una clase derivada, restablece el valor predeterminado de esta propiedad del componente. When overridden in a derived class, resets the value for this property of the component to the default value.

SetValue(Object, Object) SetValue(Object, Object) SetValue(Object, Object) SetValue(Object, Object)

Cuando se reemplaza en una clase derivada, establece el valor del componente en otro diferente. When overridden in a derived class, sets the value of the component to a different value.

ShouldSerializeValue(Object) ShouldSerializeValue(Object) ShouldSerializeValue(Object) ShouldSerializeValue(Object)

Cuando se reemplaza en una clase derivada, determina un valor que indica si el valor de esta propiedad debe almacenarse. When overridden in a derived class, determines a value indicating whether the value of this property needs to be persisted.

ToString() ToString() ToString() ToString()

Devuelve una cadena que representa el objeto actual. Returns a string that represents the current object.

(Inherited from Object)

Se aplica a

Consultar también