NI-DAQmx .NET Framework 4.0 API Reference

Content Type
Programming Language
Current manual
Table of Contents
Product DocumentationNI-DAQmx .NET Framework 4.0 API ReferenceCounterSingleChannelReader.BeginReadMultiSamplePulseTime MethodCurrent page
Table of Contents

CounterSingleChannelReader.BeginReadMultiSamplePulseTime Method

CounterSingleChannelReader.BeginReadMultiSamplePulseTime Method

CounterSingleChannelReaderBeginReadMultiSamplePulseTime Method

Begins an asynchronous read of one or more pulse samples in terms of time from a counter task.

Namespace:  NationalInstruments.DAQmx
Assembly:  NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302

Syntax

public IAsyncResult BeginReadMultiSamplePulseTime(
	int numberOfSamples,
	AsyncCallback callback,
	Object state
)
Public Function BeginReadMultiSamplePulseTime ( 
	numberOfSamples As Integer,
	callback As AsyncCallback,
	state As Object
) As IAsyncResult

Parameters

numberOfSamples
Type: SystemInt32
The number of samples to read. If you set numberOfSamples to -1 for a continuous acquisition, the read retrieves all samples available in the buffer at the time of the read. If you set numberOfSamples to -1 for a finite acquisition, the read behavior is set by the ReadAllAvailableSamples property of the DaqStream you are reading from.
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: IAsyncResult
An IAsyncResult that represents the asynchronous call.

Remarks

To get the read data or any exceptions that occurred during an asynchronous read initiated with BeginReadMultiSamplePulseTime(Int32, AsyncCallback, Object), call EndReadMultiSamplePulseTime(IAsyncResult) with the returned IAsyncResult.

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.

Refer to NI-DAQmx Readers and Writers for more information about memory limitations in NI-DAQmx read methods.

Note Note
Refer to Asynchronous Reads and Writes for additional information.

See Also

In This Section
Was this information helpful?