Binding to OData

Forth from Q1 2012, RadScheduler can be bound to an OData service. The Open Data Protocol (OData) is an open web protocol for querying and updating data. The protocol allows for a consumer to query a data source over the HTTP protocol and get the result back in formats like Atom, JSON or plain XML, including pagination, ordering or filtering of the data. Also, the binding is one way only, i.e. it is not possible to perform update/insert/delete on the data source.The binding can be flat or hierarchical, the RadScheduler can utilize only the flat binding.

With the introduction of the RadODataDataSource control, binding to an OData feed is pretty similar to the standard binding, except for the fact that the RadScheduler is in Read-Only mode.

Configuration

The following properties could be set in order to map the exposed feed to the binding fields:

• DataStartField

• DataEndField

• DataSubjectField

• DataKeyField

• DataDescriptionField

• DataModelID

It is necessary to set DataModelID property to the OData Entity that contains your appointment data.

The InitialContainerName property is now depricated and DataModelID should be used instead.

The OData binding does not require serialized AppointmentData objects. Instead, the developer is free to expose whatever objects they want as a JSON feed, as long as the data is meaningful to the Scheduler.

Here is how the declaration of a RadScheduler bound to a RadODataDataSource control would look like:

The RadODataDataSource should be defined before the RadScheduler.

<telerik:RadODataDataSource ID="ODataDataSource1" runat="server">
    <Transport>
        <Read Url="SchedulerODataWcfService.svc" />
    </Transport>
    <Schema>
        <telerik:DataModel ModelID="Appointments" Set="Appointments">
            <telerik:DataModelField FieldName="ID" />
            <telerik:DataModelField FieldName="Subject" />
            <telerik:DataModelField FieldName="Start" />
            <telerik:DataModelField FieldName="End" />
        </telerik:DataModel>
    </Schema>
</telerik:RadODataDataSource>
<telerik:RadScheduler RenderMode="Lightweight" ID="RadScheduler1" runat="server" SelectedView="WeekView" SelectedDate="4/15/2012" ODataDataSourceID="ODataDataSource1"
    DataKeyField="ID" DataModelID="Appointments" DataStartField="Start" DataEndField="End"
    DataSubjectField="Subject" ReadOnly="True">
</telerik:RadScheduler>

See Also

• Online demo