public async Task InitializeAsync()
{
try
{
await _userInterfaceService.ShowBusyIndicatorAsync();
Model = await _restService.GetAsync<DevicesModel>(new Uri("api/devicemanager/devices", UriKind.Relative));
var sortedModel = new DevicesModel();
BuildHierarchy(Model, sortedModel, Model.DeviceList.Where(d => d.ParentID == null).Select(d => d.ID).FirstOrDefault(), 0);
Model = sortedModel;
await _userInterfaceService.HideBusyIndicatorAsync();
}
catch (Exception ex)
{
await _userInterfaceService.ShowFeedbackAsync(ex);
}
}
private void BuildHierarchy(DevicesModel model, DevicesModel sortedModel, string parentId, int level)
{
foreach (var device in model.DeviceList.Where(d => d.ParentID == parentId))
{
device.Level = level;
if (string.IsNullOrEmpty(device.Description))
device.Description = device.ID;
if (String.IsNullOrEmpty(device.Class))
device.Class = "Unknown";
sortedModel.DeviceList.Add(device);
var children = Model.DeviceList.Where(d => d.ParentID == device.ID);
if (children.Count() > 0)
{
device.HasChildren = true;
BuildHierarchy(Model, sortedModel, device.ID, level + 1);
}
} // for each device
}