CounterMultiChannelReader.EndReadSingleSampleUInt32 Method
- Updated2023-02-21
- 2 minute(s) read
CounterMultiChannelReaderEndReadSingleSampleUInt32 Method
Handles the end of an asynchronous read initiated with BeginReadSingleSampleUInt32(AsyncCallback, Object) and retrieves the read sample.
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302
Syntax
public uint[] EndReadSingleSampleUInt32( IAsyncResult asyncResult )
Public Function EndReadSingleSampleUInt32 ( asyncResult As IAsyncResult ) As UInteger()
Parameters
- asyncResult
- Type: SystemIAsyncResult
An IAsyncResult that represents an asynchronous call started by calling BeginReadSingleSampleUInt32(AsyncCallback, Object).
Return Value
Type: UInt32A 1D array of UInt32 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 BeginReadSingleSampleUInt32(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 EndReadSingleSampleUInt32(IAsyncResult) before the asynchronous read represented by the provided IAsyncResult is complete, EndReadSingleSampleUInt32(IAsyncResult) waits for the read to complete before returning.
NI-DAQmx scales the returned data to the units of the measurement, including any custom scaling you apply to the channel. You specify these units with the create channel methods or the DAQ Assistant.
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. |