Style.AddAttributesToRender 方法

public:
 void AddAttributesToRender(System::Web::UI::HtmlTextWriter ^ writer);

public void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer);

member this.AddAttributesToRender : System.Web.UI.HtmlTextWriter -> unit

Public Sub AddAttributesToRender (writer As HtmlTextWriter)

參數

備註

要在用戶端渲染網頁伺服器控制項的屬性和樣式，通常會呼叫 and HtmlTextWriter.AddAttributeHtmlTextWriter.AddStyleAttribute 方法，將每個屬性和樣式分別插入輸出串流。System.Web.UI.HtmlTextWriter 為了簡化流程，此方法封裝了所有與 HtmlTextWriter.AddAttributeHtmlTextWriter.AddStyleAttribute and 方法相關的呼叫，涵蓋與 Web 伺服器控制項相關的每個屬性與樣式。 所有屬性與樣式會在單一方法呼叫中插入 System.Web.UI.HtmlTextWriter 輸出串流中。

另請參閱

• AddAttribute(String, String)
• AddStyleAttribute(String, String)
• HtmlTextWriter

public:
 virtual void AddAttributesToRender(System::Web::UI::HtmlTextWriter ^ writer, System::Web::UI::WebControls::WebControl ^ owner);

public virtual void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer, System.Web.UI.WebControls.WebControl owner);

abstract member AddAttributesToRender : System.Web.UI.HtmlTextWriter * System.Web.UI.WebControls.WebControl -> unit
override this.AddAttributesToRender : System.Web.UI.HtmlTextWriter * System.Web.UI.WebControls.WebControl -> unit

Public Overridable Sub AddAttributesToRender (writer As HtmlTextWriter, owner As WebControl)

參數

範例

以下範例示範如何建立由該 WebControl 類別衍生的類別。 方法的基礎實作 AddAttributesToRender 會被覆寫，以在輸出串流中加入適合導出類別 System.Web.UI.HtmlTextWriter 的屬性。

namespace ControlTest 
{
   using System;
   using System.Web.UI;
   using System.Web.UI.WebControls;

   // Renders the following HTML: 
   // <span onclick="alert('Hello');" style="color:Red;">Custom Contents</span>

   public class MyWebControl: WebControl {

      public MyWebControl() : base(HtmlTextWriterTag.Span) 
      { }

      [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] 
      protected override void AddAttributesToRender(HtmlTextWriter writer) 
      {

         writer.AddAttribute(HtmlTextWriterAttribute.Onclick, "alert('Hello');");
         writer.AddStyleAttribute(HtmlTextWriterStyle.Color, "Red");
         base.AddAttributesToRender(writer);
      }

      [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")] 
      protected override void RenderContents(HtmlTextWriter writer) 
      {
         writer.Write("Custom Contents");
         base.RenderContents(writer);
      }
   }
}

Imports System.Web.UI
Imports System.Web.UI.WebControls

Namespace ControlTest
   
   ' Renders the following HTML: 
   ' <span onclick="alert('Hello');" style="color:Red;">Custom Contents</span>
   Public Class MyWebControl
      Inherits WebControl
      
      
      Public Sub New()
         MyBase.New(HtmlTextWriterTag.Span)
      End Sub
      
      <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
      Protected Overrides Sub AddAttributesToRender(writer As HtmlTextWriter)
         
         writer.AddAttribute(HtmlTextWriterAttribute.Onclick, "alert('Hello');")
         writer.AddStyleAttribute(HtmlTextWriterStyle.Color, "Red")
         MyBase.AddAttributesToRender(writer)

      End Sub

      <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
      Protected Overrides Sub RenderContents(writer As HtmlTextWriter)
         writer.Write("Custom Contents")
         MyBase.RenderContents(writer)
      End Sub

   End Class

End Namespace 'ControlTest

備註

要在用戶端渲染網頁伺服器控制項的屬性和樣式，通常會呼叫 and HtmlTextWriter.AddAttributeHtmlTextWriter.AddStyleAttribute 方法，將每個屬性和樣式分別插入輸出串流。System.Web.UI.HtmlTextWriter 為了簡化流程，此方法封裝了所有與 HtmlTextWriter.AddAttributeHtmlTextWriter.AddStyleAttribute and 方法相關的呼叫，涵蓋與 Web Server 控制項相關的每個屬性與樣式。 所有屬性與樣式會在單一方法呼叫中插入 System.Web.UI.HtmlTextWriter 輸出串流中。 此方法通常會被派生類別中的控制開發者覆寫，以在該類別的輸出串流中插入適當的屬性與樣式 System.Web.UI.HtmlTextWriter 。

另請參閱

• AddAttribute(String, String)
• AddStyleAttribute(String, String)
• HtmlTextWriter