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PROPERTY:  Response.Buffer
Modified in version 3.0

The Buffer property tells whether to buffer (temporarily store) the output page being sent to the browser. A response is not sent to the browser until all scripts are processed, or the Flush or End methods are called. The Buffer property cannot be set or changed after the server has sent output to the browser. Therefore, you need to set the Buffer property on the first line of the ASP page. If the Buffer is set to True, then the server will buffer the output. If it is set to False, then no buffering occurs.

In ASP version 2.0 the default value is False and no buffering is done.

In ASP version 3.0 the default value is True and the server will buffer the output. However, there is a quirk concerning the default value of Response.Buffer that is dependent upon how Windows 2000 (which contains IIS 5.0 and ASP 3.0) is initially installed on your computer. If you do a clean install, the default value will be True. If the install is an upgrade, the default value will be False.

In the code example, there is no output because the loop does not finish and the Buffer will not empty until the script has finished. If the buffer was set to False, then the Response.Write would write the number to the browser every time it went through the loop.

Code:
<%
Response.Buffer = TRUE
x=0
Do
    x = x+1
    Response.Write x & "<BR>"
Loop
%>

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