Calendar.CreateControlCollection Method

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

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Creates a collection to store child controls.

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

Returns

ControlCollection

Always returns an InternalControlCollection object.

Examples

The following code example demonstrates how to override the CreateControlCollection method in a custom server control so that it always returns a new instance of the EmptyControlCollection class for the Calendar control.

<%@ 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

Remarks

The CreateControlCollection method is primarily of interest to control developers who extend the functionality of the Calendar control.

Applies to

次の方法で共有