Resource Loading

Static configuration (.aspx)

<DayPilot:DayPilotScheduler 
  ID="DayPilotScheduler1" 
  runat="server" 
  TreeEnabled="true"
  ...
  >
  <Resources>
      <DayPilot:Resource Name="Locations" Value="GroupLocations" Expanded="True">
          <Children>
              <DayPilot:Resource Name="Room 1" Value="A" Expanded="False" />
              <DayPilot:Resource Name="Room 2" Value="B" Expanded="False" />
              <DayPilot:Resource Name="Room 3" Value="C" Expanded="False" />
              <DayPilot:Resource Name="Room 4" Value="D" Expanded="False" />
          </Children>
      </DayPilot:Resource>
      <DayPilot:Resource Name="People" Value="GroupPeople" Expanded="True">
          <Children>
          <DayPilot:Resource Name="Person 1" Value="E" Expanded="False" />
          <DayPilot:Resource Name="Person 2" Value="F" ToolTip="Test" Expanded="False" />
          <DayPilot:Resource Name="Person 3" Value="G" ToolTip="Test" Expanded="False" />
          <DayPilot:Resource Name="Person 4" Value="H" ToolTip="Test" Expanded="False" />
          </Children>
      </DayPilot:Resource>
      <DayPilot:Resource Name="Tools" Value="GroupTools" Expanded="True">
          <Children>
          <DayPilot:Resource Name="Tool 1" Value="I" Expanded="False" />
          <DayPilot:Resource Name="Tool 2" Value="J" ToolTip="Test" Expanded="False" />
          <DayPilot:Resource Name="Tool 3" Value="K" ToolTip="Test" Expanded="False" />
          <DayPilot:Resource Name="Tool 4" Value="L" ToolTip="Test" Expanded="False" />
          </Children>
      </DayPilot:Resource>
 </Resources>
</DayPilot:DayPilotScheduler>

Loading Resources from a Database

Resources only need to be set once (in Page_Load). 

protected void Page_Load(object sender, EventArgs e)
{
  if (!IsPostBack)
  {
    LoadResources();
  }
}

private void LoadResources()
{
  DataTable locations = new DataManager().GetLocations();
  DayPilotScheduler1.Resources.Clear();
  foreach (DataRow location in locations.Rows)
  {
    int id = Convert.ToInt32(location["LocationId"]);

    Resource r = new Resource((string)location["LocationName"], null); // using null for resources that can't be used
    r.IsParent = true; // marking as parent for the case that no children are loaded
    r.Expanded = true;
    DayPilotScheduler1.Resources.Add(r);

    DataTable rooms = new DataManager().GetLocations(id, Filter.Seats);
    
    foreach (DataRow dr in rooms.Rows)
    {
      Resource c = new Resource((string)dr["LocationName"], Convert.ToString(dr["LocationId"]));
      r.Children.Add(c);
    }
  }
}

The resources collection is persisted during subsequent PostBacks and CallBacks. This increases the size of the request/response but it is convenient and it keeps. 

This behavior can be turned off using SyncResourceTree property (SyncResourceTree="false"). In this case it is necessary to load the resources during every request:

protected void Page_Load(object sender, EventArgs e)
{
  if (!IsPostBack)
  {
    // ...
  }

  LoadResources();
}

See also How to load the Scheduler resource tree from a database (SQL Server) (KB).

Resources only need to be set once (in OnInit). It is persisted during subsequent PostBacks and CallBacks.

protected override void OnInit(InitArgs e)
{
  LoadResources();

  UpdateWithMessage("Welcome!", CallBackUpdateType.Full);
}

private void LoadResources()
{
  foreach (DataRow r in new EventManager().GetResources().Rows)
  {
      Resources.Add((string) r["name"], Convert.ToString(r["id"]));
  }
}

Note that changing the resources requires full update:

UpdateWithMessage("Welcome!", CallBackUpdateType.Full);

The Scheduler resources (rows) can be created directly in the view or in the controller.

Creating Resources in the MVC View

@Html.DayPilotScheduler("dps", new DayPilotSchedulerConfig {
  BackendUrl = ResolveUrl("~/Scheduler/Backend"),
  Resources = new ResourceCollection {
      new Resource{Name = "Room A", Id = "A", Expanded = true, Children = new ResourceCollection
        {
            new Resource("Room A.1", "A.1"),
            new Resource("Room A.2", "A.2"),
            new Resource("Room A.3", "A.3")
        }},
      new Resource("Room B", "B"),
      new Resource("Room C", "C"),
      new Resource("Room D", "D")
  }
})

Creating Resources in the Backend Controller

The Resources collection should be filled in the OnInit() event handler. This event will be called immediately after the Scheduler is initialized on the client side. It is called only once.

The Resources collection will be persisted during all subsequent callback calls and it is not necessary to rebuild it on every callback.

public class SchedulerController : Controller
{
  //
  // GET: /Scheduler/

  public ActionResult Backend()
  {
      return new Dps().CallBack(this);
  }

  class Dps : DayPilotScheduler
  {
    protected override void OnInit(InitArgs e)
    {
      Resources.Add("Room A", "A");
      Resources.Add("Room B", "B");
      Resources.Add("Room C", "C");
      Resources.Add("Room D", "D");
      Resources.Add("Room E", "E");

      UpdateWithMessage("Welcome!", CallBackUpdateType.Full);
    }

    protected override void OnFinish()
    {
      if (UpdateType == CallBackUpdateType.None)
      {
          return;
      }

      Events = new EventManager().FilteredData(StartDate, StartDate.AddDays(Days)).AsEnumerable();

      DataIdField = "id";
      DataTextField = "name";
      DataStartField = "eventstart";
      DataEndField = "eventend";
      DataResourceField = "resource";
    }
  }
}