MaxMemoryStorage Property, ASPForm class

Description

Maximum size of source data stored in memory.
- Source data with size less than MaxMemoryStorage are stored in memory.
- Data are stored in Temp folder (ScriptUtils.ASPForm.TempPath) if the source data size exceeds this value.

Syntax

vMaxMemoryStorage = ASPForm.MaxMemoryStorage
ASPForm.MaxMemoryStorage = vMaxMemoryStorage

Returns

Long

Remarks

Special values:
1. 0 (zero) means that whole data are stored on the disk. 2. Default value is &H20000 bytes (128kB).

You should not to increase this value - there are usually no significant performance differences between store temporary data in memory or disk - because consumed resources to store files on server side are less than consumed resources to read data from client.
Store uploadded temporary data to a disk is a main performance/security idea for upload. This is a great feature against ASP.Net default upload control (HTMLInputFile). HTMLInputFile from ASPNet takes around 5MB of memory to upload 1MB file. You will need at least 500 MB of a free memory if you have 10 client uploading one 10MB file with ASPNet HTMLInputForm upload control. HugeASP upload takes 1MB (one megabyte) of memory to do same action (and 100MB disk size to store temporary data, of course).

Examples

Upload - Store up to 1MB data in memory

<%
'Sample file Form-MaxMemory.asp 
' 
'

Server.ScriptTimeout = 5000

'Create upload form
Dim Form: Set Form = Server.CreateObject("ScriptUtils.ASPForm")

'Set maximum memory storage to 1MB 
Form.MaxMemoryStorage = &H100000
'

'was the Form successfully received?
If Form.State = 0 Then
  Form.Files.Save "e:\upload"
  
  Response.Write "<br>n of Items:" & Form.Items.Count
  
  Response.Write "<br>n of Fields:" & Form.Fields.Count
  Response.Write "<br>n of Files:" & Form.Files.Count
  Response.Write "<br>" & vbCrLf
  
  Response.Write "<br>Form.MaxMemoryStorage:" & Form.MaxMemoryStorage
End If'Form.State = 0 then

%>  
<br>sample For <A Href=http://www.motobit.com>HugeASP upload</A>

<form name="file_upload" method="POST" ENCTYPE="multipart/form-data" >
<input Name=SourceFile1 Type=File>
<input Name=Description1>
<input Name=SubmitButton Value="Submit >>" Type=Submit>
</Form>

Methods of ASPForm class

AddConnection, CancelConnection, CheckRequirements, Read, Sleep, StringToBinary

Properties of ASPForm class

BytesRead, Files, FormType, getForm, CharSet, ChunkReadSize, Items, MaxMemoryStorage, NewUploadID, ReadTime, ReadTimeout, SizeLimit, SourceData, State, TempPath, Texts, ThreadPriority, TotalBytes, UploadID

ScriptUtils.ASPForm

The ASPForm collection retrieves the values of form elements posted to ASP script by a form using the POST method. ASPForm can process multipart/form-data or application/x-www-form-urlencoded data with length up to 2GB.

ScriptUtils

     Huge ASP upload is easy to use, hi-performance ASP file upload component with progress bar indicator. This component lets you upload multiple files with size up to 2GB to a disk or a database along with another form fields. Huge ASP file upload is a most featured upload component on a market with competitive price and a great performance.

     The software has also a free version of asp upload with progress, called Pure asp upload, written in plain VBS, without components (so you do not need to install anything on server).

     This installation package contains also ScriptUtilities library. Script Utilities lets you create hi-performance log files, works with binary data, you can download multiple files with zip/arj compression, work with INI files and much more with the ASP utility.

MaxMemoryStorage