WebPartVerb.ImageUrl Propiedad
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Obtiene o establece una cadena que contiene una dirección URL de una imagen que representa un verbo en la interfaz de usuario.
public:
virtual property System::String ^ ImageUrl { System::String ^ get(); void set(System::String ^ value); };
public virtual string ImageUrl { get; set; }
member this.ImageUrl : string with get, set
Public Overridable Property ImageUrl As String
Valor de propiedad
Una cadena que contiene la dirección URL de una imagen. El valor predeterminado es una cadena vacía ("").
Ejemplos
En el ejemplo de código siguiente se muestra cómo invalidar la ImageUrl propiedad en una clase derivada que hereda de WebPartVerb. Este código fuente muestra solo la parte del código para la zona personalizada y la WebPartVerb clase que invalida la propiedad . El resto del código necesario para ejecutar el ejemplo se puede encontrar en la sección Ejemplo de la información general de la WebPartVerb clase. Tenga en cuenta que el código de ejemplo asigna un icono ficticio a la ImageUrl propiedad; si asigna una imagen o icono real, aparecerá junto al verbo en el menú verbo.
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Security.Permissions;
using System.Collections.Generic;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
namespace Samples.AspNet.CS.Controls
{
/*
This code sample creates a Web Part zone and adds the
"Copy Web Part" verb to any control in the zone.
*/
[AspNetHostingPermission(SecurityAction.Demand,
Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand,
Level = AspNetHostingPermissionLevel.Minimal)]
public class ZoneWithAddedVerb : WebPartZone
{
protected override void OnCreateVerbs(WebPartVerbsEventArgs e)
{
List<WebPartVerb> newVerbs = new List<WebPartVerb>();
newVerbs.Add(new CopyWebPartVerb(CopyWebPartToNewOne));
e.Verbs = new WebPartVerbCollection(e.Verbs,newVerbs);
base.OnCreateVerbs(e);
}
void CopyWebPartToNewOne(object sender, WebPartEventArgs e)
{
WebPartManager wpmgr =
WebPartManager.GetCurrentWebPartManager(Page);
System.Web.UI.WebControls.WebParts.WebPart wp;
Type tp = e.WebPart.GetType();
wp = (System.Web.UI.WebControls.WebParts.WebPart)Activator.CreateInstance(tp);
wpmgr.AddWebPart(wp, e.WebPart.Zone, e.WebPart.ZoneIndex + 1);
}
}
[AspNetHostingPermission(SecurityAction.Demand,
Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand,
Level = AspNetHostingPermissionLevel.Minimal)]
internal class CopyWebPartVerb : WebPartVerb
{
private const String _copyWebPartImageUrl = "~/CopyVerb.ico";
internal CopyWebPartVerb(WebPartEventHandler serverClickHandler) :
base("MyVerb", serverClickHandler)
{ }
public override string Text
{
get { return "Copy Web Part"; }
set { ;}
}
public override string Description
{
get { return "This verb will copy this web part control " +
"to a new one below"; }
set { ; }
}
public override bool Enabled
{
get { return base.Enabled; }
set { base.Enabled = value; }
}
public override string ImageUrl
{
get { return _copyWebPartImageUrl; }
set { ; }
}
}
}
Imports System.Data
Imports System.Configuration
Imports System.Web
Imports System.Web.Security
Imports System.Security.Permissions
Imports System.Collections.Generic
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls
' This code sample creates a Web Part zone and adds the
' "Copy Web Part" verb to any control in the zone.
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermission(SecurityAction.InheritanceDemand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
Public Class ZoneWithAddedVerb
Inherits WebPartZone
'public class ExtendedWebPartZoneBase
Protected Overrides Sub OnCreateVerbs(ByVal e _
As WebPartVerbsEventArgs)
Dim newVerbs As List(Of WebPartVerb) = _
New List(Of WebPartVerb)
newVerbs.Add(New CopyWebPartVerb(AddressOf CopyWebPartToNewOne))
e.Verbs = New WebPartVerbCollection(e.Verbs, newVerbs)
MyBase.OnCreateVerbs(e)
End Sub
Sub CopyWebPartToNewOne(ByVal sender As Object, _
ByVal e As WebPartEventArgs)
Dim wpmgr As WebPartManager = _
WebPartManager.GetCurrentWebPartManager(Page)
Dim wp As System.Web.UI.WebControls.WebParts.WebPart
Dim tp As Type = e.WebPart.GetType()
wp = CType(Activator.CreateInstance(tp), _
System.Web.UI.WebControls.WebParts.WebPart)
wpmgr.AddWebPart(wp, e.WebPart.Zone, e.WebPart.ZoneIndex + 1)
End Sub
End Class
<AspNetHostingPermission(SecurityAction.Demand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermission(SecurityAction.InheritanceDemand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
Friend Class CopyWebPartVerb
Inherits WebPartVerb
Private Const _copyWebPartImageUrl As String = "~/CopyVerb.ico"
Friend Sub New(ByVal serverClickHandler As WebPartEventHandler)
MyBase.New("MyVerb", serverClickHandler)
End Sub
Public Overrides Property [Text]() As String
Get
Return "Copy Web Part"
End Get
Set(ByVal value As String)
End Set
End Property
Public Overrides Property Description() As String
Get
Return "This verb will copy this web part control to a " _
& "new one below"
End Get
Set(ByVal value As String)
End Set
End Property
Public Overrides Property Enabled() As Boolean
Get
Return MyBase.Enabled
End Get
Set(ByVal value As Boolean)
MyBase.Enabled = value
End Set
End Property
Public Overrides Property ImageUrl() As String
Get
Return Me._copyWebPartImageUrl
End Get
Set(ByVal value As String)
End Set
End Property
End Class
End Namespace
Comentarios
La ImageUrl propiedad proporciona una manera de usar una representación visual personalizada para verbos como alternativa a la representación predeterminada, que suele ser un botón o un hipervínculo. Si asigna una dirección URL a la propiedad , la imagen aparece en los menús de verbos (junto al verbo) o directamente en formularios (en lugar de un botón o hipervínculo que representa el verbo).