title: Resources not being 'selected' in Telerik Scheduler Edit Dialog
body: <p>I've implemented Telerik scheduler on timeline view.  I am allowing a M:M relationship between my y-axis resource (advocates) and Meetings.  Here is what my scheduler looks like:</p>
  
  <p><img src="https://i.stack.imgur.com/FY2OL.png" alt="Timeline View"></p>
  
  <p>When I double click one of the instances of the meeting, the advanced edit dialog appears.  However, in here, none of the advocates are selected as participants in the meeting:</p>
  
  <p><img src="https://i.stack.imgur.com/ozw5Y.png" alt="Advocate Resources - edit meeting dialog"></p>
  
  <p>There are a number of advocates for whom this meeting appears in the timeline.  Why do they not get displayed as selected in the edit form?</p>
  
  <p>The problem doesn't end there.  I have a second type of resources (legislators) that also has a M:M relationship with Meetings.  There is a similar problem here - I have relationships defined for this meeting and 4 legislators, but only the first legislator is checked (and the other three remain unckecked):</p>
  
  <p><img src="https://i.stack.imgur.com/duebU.png" alt="Legislator Resources - edit meeting dialog"></p>
  
  <p>I need to add two other types of resources (again, each will be M:M with Meetings), and I expect that I will have a similar problem to the two I have already added.</p>
  
  <p>I have been able to verify visually by changing the grouping of my scheduler and through SQL queries that the relationships in the database are valid.  So, why am I unable to see each of these related resources checked?  My scheduler code is as follows:</p>
  
  <pre><code>&lt;telerik:RadScheduler runat="server" ID="RadScheduler1" 
      AdvancedForm-Enabled="true"
      AllowEdit="true" 
      AllowInsert="true" 
      DataEndField="End"
      DataKeyField="ID" 
      DataSourceID="EventsDataSource" 
      DataStartField="Start"
      DataSubjectField="Subject" 
      DayEndTime="17:00:00" 
      DayStartTime="07:00:00" 
      EnableAdvancedForm="true"
      Localization-HeaderMultiDay="Work Week" 
      OverflowBehavior="Expand" 
      OnAppointmentDelete="OnAppointmentDelete"
      OnAppointmentInsert="OnAppointmentInsert" 
      OnAppointmentUpdate="OnAppointmentEdited"
      OnNavigationComplete="RadScheduler1_NavigationComplete"
      SelectedDate="9/20/2011" 
      SelectedView="TimelineView" 
      &gt;
          &lt;AppointmentContextMenuSettings EnableDefault="true" /&gt;     
      &lt;AdvancedForm Modal="true" /&gt;
      &lt;ResourceTypes&gt;
          &lt;telerik:ResourceType KeyField="Adv_AdvocateID" AllowMultipleValues="true" Name="Advocate" TextField="Adv_FullName" ForeignKeyField="Adv_AdvocateID"
              DataSourceID="AdvocatesDataSource" /&gt;
      &lt;/ResourceTypes&gt;
      &lt;ResourceTypes&gt;
          &lt;telerik:ResourceType KeyField="Leg_LegID" Name="Legislator" AllowMultipleValues="true" TextField="Leg_FullName" ForeignKeyField="Leg_LegID"
              DataSourceID="LegislatorsDataSource" /&gt;
      &lt;/ResourceTypes&gt;
      &lt;TimelineView UserSelectable="true" GroupBy="Advocate" GroupingDirection="Vertical" /&gt;
      &lt;MultiDayView UserSelectable="false" /&gt;
      &lt;DayView UserSelectable="false" /&gt;
      &lt;WeekView UserSelectable="false" /&gt;
      &lt;MonthView UserSelectable="false" /&gt;
  &lt;/telerik:RadScheduler&gt;
  </code></pre>
  
  <p>I'm hoping someone can shed some insight into how to correctly display the selected resources in the edit appointment dialog, and I thank you in advance for your help.</p>