ReadFrom Method of ByteArray class - Read binary data from a file

Method | Member of  ScriptUtils.ByteArray | Changes | Purchase | Download

Description

Reads data from file.

HTTP headers and non-asci characters (Content-Disposition, filename, attachment)

Some ways to download file names with international (non-asci) characters.

Syntax

ByteArray.ReadFrom (FileName as String, [StartPosition as Variant = 1], [Length as Long])
 

Where Type Optional Default Description
 FileName  String     File to read data. 
 StartPosition  Variant  yes  1  Start position, based to 1. 
 Length  Long  yes    Number of bytes to read from file. 

Remarks

- You can read 2GB maximum data block
- 16kB - 65kB data block is a good settings for ASP download.
- StartPosition accepts 64bit integer, so you can read data blocks from files with size > 2GB.

Examples

ASP gigabyte download - download over 2GB, 4GB, very large/huge files.

See also

ByteArray.SaveAs

Other links for ReadFrom

Methods of ByteArray class

Find, FindRev, CharSetConvert, Left, Mid, ReadFrom, Right, SaveAs, SetSize

Properties of ByteArray class

Base64, ByteArray, CodePage, HexString, CharSet, Length, Punycode, String

ScriptUtils.ByteArray

Works with safearray binary data - save/restore binary data from/to a disk, convert to a string/hexstring, codepage/charset conversions, Base64 conversion, etc.
     ByteArray is a COM class specially designed to work with Microsoft Windows Scripting engines - VB Script and JScript in Active Server Pages or WSH and in CHM or HTA applications. It also works with VB Net, Visual basic (VBA - VB 5, VB 6, Word, Excel, Access, ), C#, J#, C++, ASP, ASP.Net, Delphi and with T-SQL OLE functions - see Use ByteArray object article. You can also use the object in other programming environments with COM support, such is PowerBuilder.
     Source code for ByteArray is available within distribution license, please see License page for ASP file upload and ScriptUtilities.

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 4GB 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.

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