If this message pops up it is because each form field is limited to 102,399 bytes. You can read more about it here : http://support.microsoft.com/default.aspx?scid=kb;EN;q273482
CAUSE
The size limit of each form field that is retrieved in the Request object is 102,399 bytes. The error occurs when you exceed this limit.
RESOLUTION
To resolve this problem, use one of the following methods:
- Instead of reading form variable values with the Request.Form collection, use Request.BinaryRead (Request.TotalBytes), and parse the form values from the output of Request.BinaryRead.
- Use a File Upload scheme, such as Microsoft Posting Acceptor.
- Break the HTML form variables into multiple form variables before you submit the form. The 102,399 byte limit is for each form variable, so you can have multiple form variables of 102,399 characters or less. The following sample code illustrates this: WARNING: ANY USE BY YOU OF THE CODE PROVIDED IN THIS ARTICLE IS AT YOUR OWN RISK. Microsoft provides this code "as is" without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.
Hans
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Edited by hans3702