/// <summary>
/// - Create a DataReader object
/// - Create an async task to read from the SerialDevice InputStream
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void Listen()
{
try
{
if (serialPort != null)
{
dataReaderObject = new DataReader(serialPort.InputStream);
gpsScanner = new GpsScanner();
// keep reading the serial input
while (true)
{
await ReadAsync(ReadCancellationTokenSource.Token);
}
}
}
catch (TaskCanceledException ex)
{
StatusTextBox.Text = ex.Message;
}
catch (Exception ex)
{
StatusTextBox.Text = ex.Message;
}
finally
{
if (dataReaderObject != null)
{
dataReaderObject.DetachStream();
dataReaderObject = null;
}
}
}
/// <summary>
/// AddWifiScanResultsToWifiScannerDatabase adds the Wifi and GPS data to the SQLite database
/// </summary>
/// <param name="wifiSignal"></param>
/// <param name="gpsScanner"></param>
/// <param name="databaseName"></param>
/// <param name="tableName"></param>
private void AddWifiScanResultsToWifiScannerDatabase(WifiSignal wifiSignal, GpsScanner gpsScanner, string databaseName, string tableName)
{
using (SqliteConnection database = new SqliteConnection("Filename = " + databaseName))
{
try
{
database.Open();
}
catch (SqliteException ex)
{
StatusTextBox.Text = ex.Message;
throw new Exception("SQL database not opened.");
}
// create if table doesn't exist
SqliteCommand createTable = new SqliteCommand
{
Connection = database,
CommandText = $"CREATE TABLE IF NOT EXISTS {tableName} (Rmc TEXT, Bssid TEXT, NetworkRssiInDecibelMilliwatts REAL, Ssid TEXT)"
};
try
{
createTable.ExecuteNonQuery();
}
catch (SqliteException ex)
{
StatusTextBox.Text = ex.Message;
throw new Exception("SQL table " + tableName + " not created.");
}
database.Close(); database.Dispose();
}
using (SqliteConnection database = new SqliteConnection("Filename = " + databaseName))
{
try
{
database.Open();
}
catch (SqliteException ex)
{
StatusTextBox.Text = ex.Message;
throw new Exception("SQL database not opened.");
}
// insert venue data
SqliteCommand insertCommand = new SqliteCommand
{
Connection = database,
CommandText = $"INSERT INTO {tableName} (Rmc, Bssid, NetworkRssiInDecibelMilliwatts, Ssid) VALUES (@Rmc, @Bssid, @NetworkRssiInDecibelMilliwatts, @Ssid)"
};
insertCommand.Parameters.AddWithValue("@Rmc", gpsScanner.RmcMessage); //string TEXT
insertCommand.Parameters.AddWithValue("@Bssid", wifiSignal.Bssid); //string TEXT
insertCommand.Parameters.AddWithValue("@NetworkRssiInDecibelMilliwatts", wifiSignal.NetworkRssiInDecibelMilliwatts); //double REAL
// This is for the GUI only
insertCommand.Parameters.AddWithValue("@Ssid", wifiSignal.Ssid); //string TEXT
try
{
insertCommand.ExecuteNonQuery();
}
catch (SqliteException ex)
{
StatusTextBox.Text = ex.Message;
}
database.Close(); database.Dispose();
}
VenueIdTextBox.Text = tableName;
OutputTextBlock.ItemsSource = ReadWifiScannerDatabase(databaseName, tableName);
}