Image.AddAttributesToRender(HtmlTextWriter) Yöntem

  • Başvuru

Tanım

Ad Alanı:
System.Web.UI.WebControls
Bütünleştirilmiş Kod:
System.Web.dll

İstemcide işleme için çıkış akışına öğesinin Image özniteliklerini ekler.

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)

Parametreler

writer
HtmlTextWriter

HtmlTextWriter İstemci tarayıcıda işlenmek üzere çıkış akışını içeren.

Örnekler

Aşağıdaki kod örneği, her zaman ince bir kenarlıkla gösterilmesi için özel bir sunucu denetiminde yönteminin Image nasıl geçersiz kılındığını AddAttributesToRender gösterir.

<%@ 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">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
        <title>Custom Image - AddAttributesToRender - C# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Image - AddAttributesToRender - C# Example</h3>
            
            <aspSample:CustomImageAddAttributesToRender 
              id="Image1" 
              runat="server" 
              ImageUrl="http://www.microsoft.com/homepage/gif/bnr-microsoft.gif" 
              AlternateText="Microsoft Home" />
            
        </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">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
        <title>Custom Image - AddAttributesToRender - VB.NET Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Image - AddAttributesToRender - VB.NET Example</h3>
            
            <aspSample:CustomImageAddAttributesToRender id="Image1" runat="server" 
             ImageUrl="http://www.microsoft.com/homepage/gif/bnr-microsoft.gif" 
             AlternateText="Microsoft Home" />
            
        </form>
    </body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomImageAddAttributesToRender : System.Web.UI.WebControls.Image
    {
        protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
        {
            // Show the Image with a thin border.
            writer.AddStyleAttribute("border-width","thin");

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

<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomImageAddAttributesToRender
    Inherits System.Web.UI.WebControls.Image

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

        ' Show the Image with a thin border.
        writer.AddStyleAttribute("border-width", "thin")

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

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