DigitalMultiChannelReader.EndReadMultiSamplePortUInt32 Method
- Updated2023-02-21
- 2 minute(s) read
DigitalMultiChannelReaderEndReadMultiSamplePortUInt32 Method
Handles the end of an asynchronous read initiated with BeginReadMultiSamplePortUInt32(Int32, AsyncCallback, Object) and retrieves the read samples.
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302
Syntax
public uint[,] EndReadMultiSamplePortUInt32( IAsyncResult asyncResult )
Public Function EndReadMultiSamplePortUInt32 ( asyncResult As IAsyncResult ) As UInteger(,)
Parameters
- asyncResult
- Type: SystemIAsyncResult
An IAsyncResult that represents an asynchronous call started by calling BeginReadMultiSamplePortUInt32(Int32, AsyncCallback, Object).
Return Value
Type: UInt32A 2D array of 32-bit unsigned integer samples from the task. Each element in the first dimension of the array corresponds to a channel in the task. Each element in the second dimension of the array corresponds to a sample from each channel. 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 BeginReadMultiSamplePortUInt32(Int32, 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 EndReadMultiSamplePortUInt32(IAsyncResult) before the asynchronous read represented by the provided IAsyncResult is complete, EndReadMultiSamplePortUInt32(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 |
---|
Refer to Asynchronous Reads and Writes for additional information. |