DigitalMultiChannelReader.EndReadSingleSamplePortByte Method
- Updated2023-02-21
- 2 minute(s) read
DigitalMultiChannelReaderEndReadSingleSamplePortByte Method
Handles the end of an asynchronous read initiated with BeginReadSingleSamplePortByte(AsyncCallback, Object) and retrieves the read samples.
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302
Syntax
public byte[] EndReadSingleSamplePortByte( IAsyncResult asyncResult )
Public Function EndReadSingleSamplePortByte ( asyncResult As IAsyncResult ) As Byte()
Parameters
- asyncResult
- Type: SystemIAsyncResult
An IAsyncResult that represents an asynchronous call started by calling BeginReadSingleSamplePortByte(AsyncCallback, Object).
Return Value
Type: ByteA 1D array of 8-bit unsigned integer samples from the task. Each element in the array corresponds to a channel in the task. The order of the channels in the array corresponds to the order in which you add the channels to the task or to the order of the channels you specify in ChannelsToRead.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentException | asyncResult is or is not an instance of IAsyncResult returned from a call to BeginReadSingleSamplePortByte(AsyncCallback, Object). |
| DaqException | The NI-DAQmx driver returned an error during the asynchronous operation. |
| OutOfMemoryException | There is not enough memory to carry out this operation. |
Remarks
If you call EndReadSingleSamplePortByte(IAsyncResult) before the asynchronous read represented by the provided IAsyncResult is complete, EndReadSingleSamplePortByte(IAsyncResult) waits for the read to complete before returning.
NI-DAQmx read and write methods time out after the amount of time specified by the Timeout property on the task you are reading from or writing to.
 Note |
|---|
| Refer to Asynchronous Reads and Writes for additional information. |