HtmlTextArea.AddParsedSubObject(Object) 메서드

정의

네임스페이스:
System.Web.UI.HtmlControls
어셈블리:
System.Web.dll

개체가 HtmlTextArea 구문 분석되었음을 컨트롤에 알리고 개체를 컨트롤의 HtmlTextArea 개체에 ControlCollection 추가합니다.

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)

매개 변수

obj
Object

Object 구문 분석된 요소를 나타내는 값입니다.

예외

HttpException

매개 변수로 obj 지정된 개체는 형식 LiteralControl 또는 DataBoundLiteralControl.

예제

다음 코드 예제에서는 구문 분석된 개체가 형식 AddParsedSubObjectHtmlTextArea인지 여부를 항상 확인하도록 사용자 지정 LiteralControl 서버 컨트롤에서 메서드를 재정 DataBoundLiteralControl 의하는 방법을 보여 줍니다.

<%@ 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">
<script runat="server">

  void Page_Load(Object sender, EventArgs e)
  {
    HtmlTextArea1.Value = "Hello Html Text Area World.";
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom HtmlTextArea AddParsedSubObject Example</title>
  </head>

  <body>
    <form id="Form1" 
          method="post" 
          runat="server">

      <h3>Custom HtmlTextArea AddParsedSubObject Example</h3>

      <aspSample:CustomHtmlTextAreaAddParsedSubObject 
        id="HtmlTextArea1" 
        name="HtmlTextArea1" 
        runat="server" 
        rows="4" 
        cols="50"/>
        
    </form>
  </body>
</html>

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.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">
<script runat="server">

  Sub Page_Load(sender As Object, e As EventArgs)

    HtmlTextArea1.Value = "Hello Html Text Area World."

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>Custom HtmlTextArea AddParsedSubObject Example</title>
  </head>

  <body>
    <form id="Form1" 
          method="post" 
          runat="server">

      <h3>Custom HtmlTextArea AddParsedSubObject Example</h3>

      <aspSample:CustomHtmlTextAreaAddParsedSubObject 
        id="HtmlTextArea1" 
        name="HtmlTextArea1" 
        runat="server" 
        rows="4" 
        cols="50" />
        
    </form>
  </body>
</html>

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

namespace Samples.AspNet.CS.Controls
{

  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomHtmlTextAreaAddParsedSubObject : System.Web.UI.HtmlControls.HtmlTextArea
  {
    protected override void AddParsedSubObject(object obj)
    {
      // If the object is a LiteralControl or a DataBoundLiteralControl control, 
      // then pass the object to the base class's AddParsedSubObject method.
      if (obj is System.Web.UI.LiteralControl || 
          obj is System.Web.UI.DataBoundLiteralControl)
      {
        base.AddParsedSubObject(obj);
      }
      else
      {
        throw new System.Web.HttpException("You cannot have a child control of type " 
         + obj.GetType().Name.ToString() + ".");
      }
    }
  }
}

Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls

Public NotInheritable Class CustomHtmlTextAreaAddParsedSubObject
   Inherits System.Web.UI.HtmlControls.HtmlTextArea

        <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
        Protected Overrides Sub AddParsedSubObject(ByVal obj As Object)

            ' If the object is a LiteralControl or a DataBoundLiteralControl control, 
            ' then pass the object to the base class's AddParsedSubObject method.
            If TypeOf obj Is System.Web.UI.LiteralControl OrElse TypeOf obj Is System.Web.UI.DataBoundLiteralControl Then
                MyBase.AddParsedSubObject(obj)
            Else
                Throw New System.Web.HttpException("You cannot have a child control of type " _ 
                  & obj.GetType().Name.ToString() & ".")
            End If
        End Sub

End Class
End Namespace

설명

메서드는 AddParsedSubObject 개체가 HtmlTextArea 형식 ControlCollection 이면 컨트롤에 LiteralControl 개체를 추가하거나DataBoundLiteralControl, 그렇지 않으면 throw HttpException 됩니다.

이 AddParsedSubObject 메서드는 주로 컨트롤의 기능을 확장 하는 컨트롤 개발자에 HtmlTextArea 의해 사용 됩니다.

적용 대상

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