The arguments for the method are:
| Arguments | Description | 
|---|---|
offset | 
The number of bytes in the field to skip before copying data. | 
numbytes | 
The number of bytes to copy. | 
bytesread | 
The number of bytes read. | 
The ReadChunk method behaves like the GetChunk method, but it returns the actual number of bytes read in the bytesread argument.