AnalogMultiChannelReader.BeginReadSingleSample Method
- Updated2023-02-21
- 2 minute(s) read
AnalogMultiChannelReaderBeginReadSingleSample Method
Begins an asynchronous read of a single floating-point sample from one or more AIChannel objects in a task.
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302
Syntax
public IAsyncResult BeginReadSingleSample( AsyncCallback callback, Object state )
Public Function BeginReadSingleSample ( callback As AsyncCallback, state As Object ) As IAsyncResult
Parameters
- callback
- Type: SystemAsyncCallback
An optional asynchronous callback that is called when the read is complete. Specify if you do not want a callback when the read is complete. - state
- Type: SystemObject
A user-provided object that distinguishes this asynchronous read request from other requests. Use this parameter to provide information to the callback. Specify if you do not need to pass any additional information to the callback.
Return Value
Type: IAsyncResultAn IAsyncResult that represents the asynchronous call.
Remarks
To get the read data or any exceptions that occurred during an asynchronous read initiated with BeginReadSingleSample(AsyncCallback, Object), call EndReadSingleSample(IAsyncResult) with the returned IAsyncResult.
NI-DAQmx scales the read 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 |
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| Refer to Asynchronous Reads and Writes for additional information. |