public IAsyncOperation <bool> connect(string device_id, IoTizeDisconnectionCallback callback)
{
Context.StopEnumeration();
_disconnectionCallback = callback;
if (connectionState == ConnectionState._inConnection)
{
Log.WriteLine("~~~~Wait for Connecting");
return(Task.Run(() => doWaitConnection())
.AsAsyncOperation());
}
else
{
connectionState = ConnectionState._inConnection;
Log.WriteLine("\n--->Start Connecting");
return(Task.Run(() => doStartConnection(device_id))
.AsAsyncOperation());
}
}
private async Task <bool> doStartDisConnection(string device_id)
{
bool successfull = false;
lastError = "";
//step 1: connect to device
try
{
if (SelectedDevice != null)
{
SelectedDevice.PropertyChanged -= SelectedDevice_PropertyChanged;
_disconnectionCallback = null;
successfull = await SelectedDevice.Disconnect();
IsDeviceConnected = !successfull;
}
}
catch (Exception e)
{
lastError = "Exception in disconnection " + e.Message;
Log.WriteLine("!!!" + lastError);
connectionState = ConnectionState._error;
return(false);
}
if (successfull == false)
{
lastError = "Failed in disconnection " + device_id;
Log.WriteLine("!!!" + lastError);
connectionState = ConnectionState._error;
return(false);
}
lastError = "Successfull disconnection";
SelectedDevice = null;
connectionState = ConnectionState._connected;
Log.WriteLine("<---" + lastError);
return(true);
}
