DownloadFileInBlocks_ReadBlock

The number of bytes to be read. For the download session to be closed, the combined size of the blocks must exceed the actual size of the file. The block size should not be more than 4MB (4,194,304). Before M-Files 23.3, using a block size of larger than 4MB may cause unexpected behavior, including exceptions, depending upon the underlying storage. From M-Files 23.3, M-Files will throw an exception if the block size is larger than 4MB.

Description

Retrieves a specific block of the specified file from the server (uses 32-bit arguments).

Syntax

Visual Basic
Public Function DownloadFileInBlocks_ReadBlock_32bit( _ ByVal DownloadID As Long, _ ByVal BlockSize As Long, _ ByVal Offset As Long _ ) As Byte()

Visual Basic

Public Function DownloadFileInBlocks_ReadBlock_32bit( _
   ByVal DownloadID As Long, _
   ByVal BlockSize As Long, _
   ByVal Offset As Long _
) As Byte()

Parameters

DownloadID: The identifier of the download operation returned by DownloadFileInBlocks_Begin_32bit.
BlockSize: The number of bytes to be read. For the download session to be closed, the combined size of the blocks must exceed the actual size of the file. The block size should not be more than 4MB (4,194,304). Before M-Files 23.3, using a block size of larger than 4MB may cause unexpected behavior, including exceptions, depending upon the underlying storage. From M-Files 23.3, M-Files will throw an exception if the block size is larger than 4MB.
Offset: The byte offset from the beginning of the file.

Remarks

For the download session to be closed, the combined size of the blocks must exceed the actual size of the file.
This method version is intended to be used in development environments with no support for 64-bit data types.
This method is available only if M-Files API is used in the server interface mode.