CheckBox.Render(HtmlTextWriter) Metoda

Reference

Definice

Obor názvů:: System.Web.UI.WebControls

Sestavení:: System.Web.dll

Důležité

Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.

Zobrazí klienta CheckBox .

protected:
 override void Render(System::Web::UI::HtmlTextWriter ^ writer);

protected public:
 override void Render(System::Web::UI::HtmlTextWriter ^ writer);

protected override void Render (System.Web.UI.HtmlTextWriter writer);

protected internal override void Render (System.Web.UI.HtmlTextWriter writer);

override this.Render : System.Web.UI.HtmlTextWriter -> unit

Protected Overrides Sub Render (writer As HtmlTextWriter)

Protected Friend Overrides Sub Render (writer As HtmlTextWriter)

Parametry

writer: HtmlTextWriter

A HtmlTextWriter obsahující výstupní datový proud, který se má vykreslit v klientovi.

Příklady

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page language="c#" %>
<!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 CheckBox - Render - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom CheckBox - Render - C# Example</h3>

      <aspSample:CustomCheckBoxRender
        id="CheckBox1"
        runat="server"
        text="CheckBox1" />

    </form>
  </body>
</html>

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %>
<%@ Page language="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>
    <title>Custom CheckBox - Render - VB.NET Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom CheckBox - Render - VB.NET Example</h3>
      <aspSample:CustomCheckBoxRender id="CheckBox1" runat="server" text="CheckBox1" />
    </form>
  </body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomCheckBoxRender : System.Web.UI.WebControls.CheckBox
    {
        protected override void Render(System.Web.UI.HtmlTextWriter writer)
        {
        // Call the base class's Render method.
        base.Render(writer);

        // Render a BR HTML tag
        writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Br);

        // Create and render a new Image Web control.
        System.Web.UI.WebControls.Image image = new System.Web.UI.WebControls.Image();
        image.ID = "Image1";
        image.ImageUrl = "image.jpg"; 
        image.AlternateText = "Image for CheckBox1.";
        image.RenderControl(writer);
        }
    }
}

Imports System.Web
Imports System.Security.Permissions

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

        Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
            ' Call the base class's Render method.
            MyBase.Render(writer)

            ' Render a BR HTML tag
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Br)

            ' Create and render a new Image Web control.
            Dim image As New System.Web.UI.WebControls.Image
            image.ID = "Image1"
            image.ImageUrl = "image.jpg"
            image.AlternateText = "Image for CheckBox1."
            image.RenderControl(writer)
        End Sub
    End Class
End Namespace

Platí pro

Viz také

Ovládací prvky Webového serveru CheckBox a CheckBoxList

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