ASP.NET in a Nutshell

Name

BufferOutput

Synopsis

Boolean = Response.BufferOutput
Response.BufferOutput = Boolean

Returns or sets a Boolean value that represents whether output is buffered on the server and sent when the request has completely finished processing, or when either the Response.Flush or Response.End methods are called. The default value is True.

Parameters

Boolean

A Boolean that will receive or set the value of the property.

Example

The example sets the BufferOutput property to False and then loops 50 times, writing a period to the HTTP output with each loop iteration. It also writes the same output to the Text property of the Message Label control. For the first 10 and the last 21 iterations, BufferOutput is set to False; for iterations 11 through 29, it is set to True.

Sub Page_Load(  )
   Response.BufferOutput = False
   Dim i As Integer
   For i = 1 To 50
      If (i > 10 And i < 30) Then 
         Response.BufferOutput = True
      Else
         Response.BufferOutput = False
      End If
      System.Threading.Thread.Sleep(500)
      Response.Write(".")
      Message.Text &= "."
      'Response.Flush
   Next
   Response.Write("<br/>Done!<br/>")
   Message.Text &= "<br/>Done!<br/>"
End Sub

The output of the code would look something like this:

.................................................. Done! .................................................. Done!

The first line of periods should appear one by one until ten have appeared, then pause, and then 20 more should appear, followed one by one by the rest and finally by the “Done!” statement. The identical output produced ...