Xceed FTP Library Documentation
EXFReceiveMemoryOptions enumeration
XceedFtp control reference > Enumeration types > EXFReceiveMemoryOptions enumeration

enum EXFReceiveMemoryOptions
{
  fmoSingleBlock = 0, 
  fmoMultipleBlocks = 1 
}

The meaning of each value is detailed in the ReceiveMemoryFile method topic's description.