LinkButton.AddParsedSubObject(Object) Méthode

Référence

Définition

Espace de noms:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

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Avertit le contrôle qu'un élément XML ou HTML a été analysé et l'ajoute à l'objet ControlCollection du contrôle.

protected:
 override void AddParsedSubObject(System::Object ^ obj);

protected override void AddParsedSubObject (object obj);

override this.AddParsedSubObject : obj -> unit

Protected Overrides Sub AddParsedSubObject (obj As Object)

Paramètres

obj: Object

Object qui représente l’élément analysé.

Exemples

L’exemple de code suivant montre comment remplacer la AddParsedSubObject méthode dans un contrôle serveur personnalisé LinkButton afin qu’elle définisse la propriété text sur la propriété de texte de l’objet analysé, si l’objet analysé est un Literal objet, ou sur une chaîne vide dans le cas contraire.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
        <title>Custom LinkButton - AddParsedSubObject - C# Example</title>
    <script runat="server">
      void LinkButton1_Command(Object sender, CommandEventArgs e) 
      {
        // Redirect to the Microsoft home page.
        Response.Redirect("http://www.microsoft.com/");
      }
    </script>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom LinkButton - AddParsedSubObject - C# Example</h3>
            
            <aspSample:CustomLinkButtonAddParsedSubObject 
              id="LinkButton1" 
              runat="server" 
              OnCommand="LinkButton1_Command" 
              ToolTip="Microsoft Home">Microsoft Corp.
            </aspSample:CustomLinkButtonAddParsedSubObject>

        </form>
    </body>
</html>

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VS.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
        <title>Custom LinkButton - AddParsedSubObject - VB.NET Example</title>
        <script runat="server">
            Sub LinkButton1_Command(sender As Object, e As CommandEventArgs)
                ' Redirect to the Microsoft home page.
                Response.Redirect("http://www.microsoft.com/")
            End Sub
        </script>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom LinkButton - AddParsedSubObject - VB.NET Example</h3>
            
            <aspSample:CustomLinkButtonAddParsedSubObject id="LinkButton1" 
             runat="server" OnCommand="LinkButton1_Command" 
             ToolTip="Microsoft Home">Microsoft Corp.</aspSample:CustomLinkButtonAddParsedSubObject>

        </form>
    </body>
</html>

using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomLinkButtonAddParsedSubObject : System.Web.UI.WebControls.LinkButton
    {
        protected override void AddParsedSubObject(object obj)
        {
            // If the server control contains any child controls.
            if (this.HasControls()) 
            {
                // Notify the base server control that an element, either XML or HTML, 
                // was parsed, and adds the element to the server control's 
                // ControlCollection object.
                base.AddParsedSubObject(obj);
            }
            else // Else the server control doesn't contain any child controls.
            {
                // If the parsed element is a LiteralControl.
                if (obj is System.Web.UI.LiteralControl) 
                {
                    // Set the server control's Text property to the parsed element's Text value.
                    this.Text = ((System.Web.UI.LiteralControl)obj).Text;
                }
                else // Else the parsed element is not a LiteralControl.
                {
                    // If the server control has a value in the Text property.
                    string currentText = this.Text;
                    if (currentText.Length != 0) 
                    {
                        // Set the server control's Text property to an empty string.
                        this.Text = System.String.Empty;

                        // Notify the base server control that a new LiteralControl was parsed, 
                        // and adds the element to the server control's ControlCollection object.
                        base.AddParsedSubObject(new System.Web.UI.LiteralControl(currentText));
                    }
                    base.AddParsedSubObject(obj);
                }
            }
        }
    }
}

<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomLinkButtonAddParsedSubObject
    Inherits System.Web.UI.WebControls.LinkButton

    Protected Overrides Sub AddParsedSubObject(ByVal obj As Object)

        ' If the server control contains any child controls.
        If Me.HasControls() Then

            ' Notify the base server control that an element, either XML or HTML, 
            ' was parsed, and adds the element to the server control's 
            ' ControlCollection object.
            MyBase.AddParsedSubObject(obj)
            ' Else the server control doesn't contain any child controls.
        Else
            ' If the parsed element is a LiteralControl.
            If TypeOf obj Is System.Web.UI.LiteralControl Then

                ' Set the server control's Text property to the parsed element's Text value.
                Me.Text = CType(obj, System.Web.UI.LiteralControl).Text

                ' Else the parsed element is not a LiteralControl.
            Else
                ' If the server control has a value in the Text property.
                Dim currentText As String = Me.Text
                If currentText.Length <> 0 Then

                    ' Set the server control's Text property to an empty string.
                    Me.Text = System.String.Empty

                    ' Notify the base server control that a new LiteralControl was parsed, 
                    ' and adds the element to the server control's ControlCollection object.
                    MyBase.AddParsedSubObject(New System.Web.UI.LiteralControl(currentText))
                End If
                MyBase.AddParsedSubObject(obj)
            End If
        End If
    End Sub
End Class

S’applique à

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LinkButton.AddParsedSubObject(Object) Méthode

Définition

Paramètres

Exemples

S’applique à

Voir aussi

Ressources supplémentaires