NI-DAQmx .NET Framework 4.5 API Reference

DigitalSingleChannelWriter.WriteMultiSamplePort Method (Boolean, Byte[])

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Updated2023-02-21
2 minute(s) read

Writes one or more 8-bit unsigned integer samples to a single DOChannel in a task.

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

Syntax

public void WriteMultiSamplePort(
	bool autoStart,
	byte[] data
)

Public Sub WriteMultiSamplePort ( 
	autoStart As Boolean,
	data As Byte()
)

Parameters

autoStart: Type: SystemBoolean
If set to this method automatically calls Start if you do not explicitly call it. You cannot set this parameter to if you have installed events on the task.
data: Type: SystemByte
A 1D array of samples to write to the task. Each element of the array corresponds to a channel in the task.

Exceptions

Exception	Condition
DaqException	The NI-DAQmx driver returned an error.
IndexOutOfRangeException	data has a non-zero lower bound.

Remarks

Use this method for devices with up to eight lines per port. If the task uses on-demand timing, this method returns only after the device generates all samples. If the task uses any timing type other than on-demand, this method returns immediately and does not wait for the device to generate all samples. Your application must call the WaitUntilDone method to block until the device has generated all samples.

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.

This method returns immediately if the output buffer has sufficient space for the samples. Otherwise, the call is blocked until the application generates enough samples to fit the new data into the output buffer.

NI-DAQmx .NET Framework 4.5 API Reference

Table of Contents

DigitalSingleChannelWriter.WriteMultiSamplePort Method (Boolean, Byte[])

Syntax

Parameters

Exceptions

Remarks

See Also

Reference