void myTask_EveryNSamplesRead(object sender, EveryNSamplesReadEventArgs e)
{
try
{
int samplePerChannel = Convert.ToInt32(edchannel.Text);
// Read the available data from the channels
data = analogInReader.ReadWaveform(samplePerChannel);
// Plot your data here
dataToDataTable(data, ref dataTable);
}
catch (DaqException exception)
{
// Display Errors
MessageBox.Show(exception.Message);
runningTask = null;
myTask.Dispose();
btnStop.IsEnabled = false;
btnStart.IsEnabled = true;
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
Start.IsEnabled = false;
ni.Task myTask = new ni.Task();
try
{
// Create a new task
// Initialize local variables
double sampleRate = Convert.ToDouble(edRate.Text);
double rangeMinimum = Convert.ToDouble(edMin.Text);
double rangeMaximum = Convert.ToDouble(edMax.Text);
int samplesPerChannel = Convert.ToInt32(edchannel.Text);
// Create a channel
myTask.AIChannels.CreateVoltageChannel(physicalChannelComboBox.Text, "",
(ni.AITerminalConfiguration)(-1), rangeMinimum, rangeMaximum, ni.AIVoltageUnits.Volts);
// Configure timing specs
myTask.Timing.ConfigureSampleClock("", sampleRate, ni.SampleClockActiveEdge.Rising,
ni.SampleQuantityMode.FiniteSamples, samplesPerChannel);
// Verify the task
myTask.Control(ni.TaskAction.Verify);
// Prepare the table for data
InitializeDataTable(myTask.AIChannels, ref dataTable);
//acquisitionDataGrid.DataContext = dataTable.DefaultView;
//acquisitionDataGrid.ItemsSource = dataTable.DefaultView;
// Read the data
reader = new ni.AnalogMultiChannelReader(myTask.Stream);
data = reader.ReadWaveform(samplesPerChannel);
dataToDataTable(data, ref dataTable);
myTask.Dispose();
}
catch (ni.DaqException exception)
{
MessageBox.Show(exception.Message);
}
finally
{
myTask.Dispose();
Start.IsEnabled = true;
}
}