Export (0) Print
Expand All

HtmlHead Class

Provides programmatic access to the HTML head element in server code.

Namespace: System.Web.UI.HtmlControls
Assembly: System.Web (in system.web.dll)

public sealed class HtmlHead : HtmlGenericControl
public final class HtmlHead extends HtmlGenericControl
public final class HtmlHead extends HtmlGenericControl
Not applicable.

The HTML head element is a container that can contain additional information about the page. The HtmlHead control is useful for specifying page formatting information that can be accessed at run time.

NoteNote:

Adding styles or style rules programmatically during asynchronous postbacks is not supported. When you add AJAX capabilities to an ASP.NET Web page, asynchronous postbacks update regions of the page without updating the whole page. For more information, see ASP.NET AJAX Overview.

The following example shows how to programmatically access the HtmlHead control to dynamically add title and style elements to the head element of the page.

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">  
  
  protected void Page_Load(object sender, System.EventArgs e)
  {
      
      // Create a Style object for the body of the page.
      Style bodyStyle = new Style();

      bodyStyle.ForeColor = System.Drawing.Color.Blue;
      bodyStyle.BackColor = System.Drawing.Color.LightGray;

      // Add the style rule named bodyStyle to the header 
      // of the current page. The rule is for the body HTML element.
      Page.Header.StyleSheet.CreateStyleRule(bodyStyle, null, "body");
 
      // Add the page title to the header element.
      Page.Header.Title = "HtmlHead Example"; 
                   
  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

<head id="head1"
      runat="server">
      <title>To be replaced.</title>
</head>

<body>
  <form id="form1" runat="server">
  
  <h3>HtmlHead Class Example</h3>  
    
  <asp:label id="Label1" 
    text = "View the HTML source code of this page to see the title 
            and body style added to the header element."
    runat="server">
  </asp:label>   
    
  </form>
</body>
</html>

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

Community Additions

ADD
Show:
© 2014 Microsoft