Table.AddAttributesToRender(HtmlTextWriter) Método

  • Referência

Definição

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Adiciona atributos HTML e estilos que precisam ser renderizadas ao HtmlTextWriter especificado.

protected:
 override void AddAttributesToRender(System::Web::UI::HtmlTextWriter ^ writer);
protected override void AddAttributesToRender (System.Web.UI.HtmlTextWriter writer);
override this.AddAttributesToRender : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub AddAttributesToRender (writer As HtmlTextWriter)

Parâmetros

writer
HtmlTextWriter

O fluxo de saída que renderiza o conteúdo HTML para o cliente.

Exemplos

O exemplo de código a seguir demonstra como substituir o AddAttributesToRender método em um controle de servidor personalizado para adicionar um atributo ao Table.

<%@ Page Language="C#" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>

<!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 id="Head2" runat="server">
    <title>Custom Table - AddAttributesToRender - C# Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom Table - AddAttributesToRender - C# Example</h3>

    <aspSample:CustomTableAddAttributesToRender 
        id="Table1" runat="server"
        GridLines="Both" CellPadding="4">
        <asp:TableRow>
            <asp:TableCell>Row 0, Col 0</asp:TableCell>
            <asp:TableCell>Row 0, Col 1</asp:TableCell>
        </asp:TableRow>
        <asp:TableRow>
            <asp:TableCell>Row 1, Col 0</asp:TableCell>
            <asp:TableCell>Row 1, Col 1</asp:TableCell>
        </asp:TableRow>
    </aspSample:CustomTableAddAttributesToRender>
      
    </div>
    </form>
</body>
</html>

<%@ Page Language="VB" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.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 id="Head2" runat="server">
    <title>Custom Table - AddAttributesToRender - VB Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom Table - AddAttributesToRender - VB Example</h3>

    <aspSample:CustomTableAddAttributesToRender 
        id="Table1" runat="server"
        GridLines="Both" CellPadding="4">
        <asp:TableRow>
            <asp:TableCell>Row 0, Col 0</asp:TableCell>
            <asp:TableCell>Row 0, Col 1</asp:TableCell>
        </asp:TableRow>
        <asp:TableRow>
            <asp:TableCell>Row 1, Col 0</asp:TableCell>
            <asp:TableCell>Row 1, Col 1</asp:TableCell>
        </asp:TableRow>
    </aspSample:CustomTableAddAttributesToRender>
      
    </div>
    </form>
</body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomTableAddAttributesToRender : System.Web.UI.WebControls.Table
  {
    protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
      // Add a client-side onclick event to the button.
      writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Onclick, "alert('Hello World');");

      // Call the base's AddAttributesToRender method.
      base.AddAttributesToRender(writer);
    }
  }
}

Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
    <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomTableAddAttributesToRender
        Inherits System.Web.UI.WebControls.Table

        Protected Overrides Sub AddAttributesToRender(ByVal writer As System.Web.UI.HtmlTextWriter)

            ' Add a client-side onclick event to the button.
            writer.AddAttribute(System.Web.UI.HtmlTextWriterAttribute.Onclick, "alert('Hello World');")

            ' Call the base's AddAttributesToRender method.
            MyBase.AddAttributesToRender(writer)
        End Sub
    End Class
End Namespace

Comentários

Esse método é usado principalmente por desenvolvedores de controle para inserir os atributos e estilos apropriados no HtmlTextWriter fluxo de saída de um Table controle. Este método substitui WebControl.AddAttributesToRender.

Aplica-se a

Confira também