NI-DAQmx .NET Framework 4.5 API Reference

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Table of Contents

CounterSingleChannelReader.EndReadMultiSampleDouble Method

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  • Updated2023-02-21
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CounterSingleChannelReader.EndReadMultiSampleDouble Method
Handles the end of an asynchronous read initiated with BeginReadMultiSampleDouble(Int32, AsyncCallback, Object) and retrieves the read samples.

Namespace:  NationalInstruments.DAQmx
Assembly:  NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.45.49302

Syntax

public double[] EndReadMultiSampleDouble(
	IAsyncResult asyncResult
)
Public Function EndReadMultiSampleDouble ( 
	asyncResult As IAsyncResult
) As Double()

Parameters

asyncResult
Type: SystemIAsyncResult
An IAsyncResult that represents an asynchronous call started by calling BeginReadMultiSampleDouble(Int32, AsyncCallback, Object).

Return Value

Type: Double
A 1D array of Double samples from the task. Each element in the array corresponds to a sample from the channel. 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.

Exceptions

ExceptionCondition
ArgumentExceptionasyncResult is or is not an instance of IAsyncResult returned from a call to BeginReadMultiSampleDouble(Int32, AsyncCallback, Object).
DaqExceptionThe NI-DAQmx driver returned an error during the asynchronous operation.
OutOfMemoryExceptionThere is not enough memory to carry out this operation.

Remarks

If you call EndReadMultiSampleDouble(IAsyncResult) before the asynchronous read represented by the provided IAsyncResult is complete, EndReadMultiSampleDouble(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 Note
Refer to Asynchronous Reads and Writes for additional information.

See Also

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