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>

Other links for MaxMemoryStorage

Methods of ASPForm class

CheckRequirements, Read, 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

Easy to use, hi-performance ASP file upload component with progress bar indicator. Let's you upload multiple files with size up to 2GB to a disk or database along with another form fields. Works with large posts, any character set (including unicode utf-8). Contains one-click multiple files/folders download with on-the-fly compression (Using BinaryWrite/BinaryRead).

      Hi-performance text file logging for ASP/VBScript/VBA applications. Lets you create daily/weekly/monthly log files with variable number of logged values and extra timing and performance info.
       Lets you work with safearray binary data in VBS/JS. It also enables conversion between binary and String data using several code pages. ZLib compress and uncompress functions. Lets you transfer files using compressed stream from a client to server using IE.
      This library also enables calling of some Kernel and Advapi functions (performance, timing, sleep, configuration ...) and enables native work with INI files.

	MaxMemoryStorage
	Property
	Member of ScriptUtils.ASPForm