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Calendar.CreateControlCollection Metodo

Definizione

Crea una raccolta per l'archiviazione di controlli figlio.

protected:
 override System::Web::UI::ControlCollection ^ CreateControlCollection();
protected override System.Web.UI.ControlCollection CreateControlCollection ();
override this.CreateControlCollection : unit -> System.Web.UI.ControlCollection
Protected Overrides Function CreateControlCollection () As ControlCollection

Restituisce

Restituisce sempre un oggetto InternalControlCollection.

Esempio

Nell'esempio di codice seguente viene illustrato come eseguire l'override del CreateControlCollection metodo in un controllo server personalizzato in modo che restituisca sempre una nuova istanza della EmptyControlCollection classe per il Calendar controllo .

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page language="c#" %>
<!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 Calendar - CreateControlCollection - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Calendar - CreateControlCollection - C# Example</h3>

      <aspSample:CustomCalendarCreateControlCollection
        id="Calendar1"
        runat="server" />

    </form>
  </body>
</html>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page language="VB" %>
<!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 Calendar - CreateControlCollection - VB.NET Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Calendar - CreateControlCollection - VB.NET Example</h3>
      <aspSample:CustomCalendarCreateControlCollection id="Calendar1" runat="server" />
    </form>
  </body>
</html>
using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomCalendarCreateControlCollection : System.Web.UI.WebControls.Calendar
    {
    protected override System.Web.UI.ControlCollection CreateControlCollection()
    {
      // Return a new EmptyControlCollection
      return new System.Web.UI.EmptyControlCollection(this);
    }
  }
}
Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomCalendarCreateControlCollection
        Inherits System.Web.UI.WebControls.Calendar

        Protected Overrides Function CreateControlCollection() As System.Web.UI.ControlCollection
            ' Return a new EmptyControlCollection
            Return New System.Web.UI.EmptyControlCollection(Me)
        End Function
    End Class
End Namespace

Commenti

Il CreateControlCollection metodo è principalmente di interesse per controllare gli sviluppatori che estendono la funzionalità del controllo Calendario.

Si applica a