ASP.NET in a Nutshell

Name

AppendHeader

Synopsis

Response.AppendHeader(ByVal name As String, _
                      ByVal value As String)

Adds an HTTP header with the specified name and value to the output stream. This method can be used to add custom HTTP headers or to modify the value of standard HTTP headers.

Parameters

name

A String argument containing the name for the header.

value

A String argument containing the value for the header.

Example

The example sets the HTTP Content-Type header to “text/xml” and then displays the new value by setting the Text property of the Message Label control to the value of the ContentType property. This causes the page output to be treated as XML.

Sub Page_Load(  )
   Response.AppendHeader("Content-Type", "text/xml")
   Message.Text = Response.ContentType
End Sub

Notes

When using this method with HTTP headers related to caching policy, if more restrictive settings are applied through the use of the ASP.NET cache APIs, the more restrictive settings will take priority over the settings applied using AppendHeader.