ControlBuilder.OnAppendToParentBuilder(ControlBuilder) ControlBuilder.OnAppendToParentBuilder(ControlBuilder) ControlBuilder.OnAppendToParentBuilder(ControlBuilder) ControlBuilder.OnAppendToParentBuilder(ControlBuilder) Method

Определение

Оповещает ControlBuilder о добавлении его к сборщику родительского элемента управления.Notifies the ControlBuilder that it is being added to a parent control builder.

public:
 virtual void OnAppendToParentBuilder(System::Web::UI::ControlBuilder ^ parentBuilder);
public virtual void OnAppendToParentBuilder (System.Web.UI.ControlBuilder parentBuilder);
abstract member OnAppendToParentBuilder : System.Web.UI.ControlBuilder -> unit
override this.OnAppendToParentBuilder : System.Web.UI.ControlBuilder -> unit
Public Overridable Sub OnAppendToParentBuilder (parentBuilder As ControlBuilder)

Параметры

parentBuilder
ControlBuilder ControlBuilder ControlBuilder ControlBuilder

Объект ControlBuilder, к которому добавляется текущий сборщик.The ControlBuilder object to which the current builder is added.

Примеры

Этот пример переопределяет OnAppendToParentBuilder метод для ControlType проверки свойства, чтобы определить тип элемента управления, к которому применяется этот построитель.This example overrides the OnAppendToParentBuilder method to check the ControlType property to determine what type of control this builder is applied to. Если это HasAspCode , то построитель проверяет, включено ли значение свойства в элемент управления. CustomTextBoxIf it is a CustomTextBox, the builder checks whether the value of the HasAspCode property is included in the control. Если это так, возникает исключение, если не HasBody вызывается метод.If so, an exception is thrown, if not the HasBody method is called.

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

namespace ASPNET.Samples
{
	[
	AspNetHostingPermission(SecurityAction.Demand,
		Level=AspNetHostingPermissionLevel.Minimal)
	]
	public class AppendControlBuilder : ControlBuilder
	{
		// Override the OnAppendToParentBuilder method.
		public override void OnAppendToParentBuilder(ControlBuilder parentBuilder)
		{
            // Check whether the type of the control this builder
            // is applied to is CustomTextBox. If so, check whether
            // ASP code blocks exist in the control. If so, call
            // throw an Exception, if not, call the HasBody method.        
			if (ControlType == Type.GetType("CustomTextBox"))
			{
				if (HasAspCode)
					throw new Exception("This control cannot contain code blocks.");
				else
					HasBody();
			}
		}
	}
}
Imports System.Web.UI
Imports System.Web
Imports System.Security.Permissions

Namespace ASPNET.Samples

   <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
   Public NotInheritable Class AppendControlBuilder
      Inherits ControlBuilder

      ' Override the OnAppendToParentBuilder method.
      Overrides Public Sub OnAppendToParentBuilder( _
         ByVal parentBuilder As ControlBuilder _
      )
            ' Check whether the type of the control this builder
            ' is applied to is CustomTextBox. If so, check whether
            ' ASP code blocks exist in the control. If so, call
            ' throw an Exception, if not, call the HasBody method.        
            If ControlType Is Type.GetType("CustomTextBox") Then
                If HasAspCode = True Then
                    Throw New Exception("This control cannot contain code blocks.")
                Else
                    HasBody()
                End If
            End If

        End Sub

   End Class

End Namespace

Применяется к