For a particular asynchronous write operation, shall contain the bytes that IVisaAsyncResult.Buffer will actually be written to the instrument. For overloads of that take string buffer arguments, BeginWrite contains the equivalent ASCII string after it has been converted from IVisaAsyncResult.Buffer UNICODE. For a particular asynchronous read or write operation, shall be IAsyncResult.AsyncWaitHandle signaled after the operation completes.
For a particular asynchronous write operation, IVisaAsyncResult.Buffer shall contain the bytes that will actually be written to the instrument. For overloads of BeginWrite that take string buffer arguments, IVisaAsyncResult.Buffer contains the equivalent ASCII string after it has been converted from UNICODE. For a particular asynchronous read or write operation, IAsyncResult.AsyncWaitHandle shall be signaled after the operation completes.
vpp436_2015-02-11.docx