Calendar.CreateControlCollection 方法

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

创建用于存储子控件的集合。

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

返回

ControlCollection

始终返回 InternalControlCollection 对象。

示例

下面的代码示例演示如何重写CreateControlCollection自定义服务器控件中的 方法，以便它始终返回 Calendar 控件类EmptyControlCollection的新实例。

<%@ 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

注解

方法 CreateControlCollection 主要用于控制扩展 Calendar 控件功能的开发人员。

适用于