Home / Community & Support / Developer Productivity Tools Forums / Silverlight > Scheduler > RadScheduler scrolling to a specific time

• Todd

  Posted on Apr 29, 2010 (permalink)

  Is there a way to scroll the scheduler control so a certain time,or time span, of a specific date is visible?
  
  Thanks,
  
  Todd Nirenstein 

  Reply

• Rosi Rosi

  Posted on Apr 30, 2010 (permalink)

  Hi Todd,
  
  I suggest you check this thread, illustrating how to achieve the desired behavior (though WPF related, the realization in Silverlight is the same).
  
  Greetings,
  Rosi
  the Telerik team

  
  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

  Reply

• Todd

  Posted on May 1, 2010 (permalink)

  Hello Rosi,
  
  Thanks for the reply.  I read the post that you directed me to.  It did sound like the same issue.  I tried it by putting the code:
  
  

  var appointmentControl = this.scheduler.ChildrenOfType<AppointmentsControl>().Single(ac => ac.Name == "NotAllDayAppointmentsControl");

  var timeSlotItemHeight = appointmentControl.ChildrenOfType<TimeSlotItem>().First().ActualHeight;

  var scrollVeiwer = appointmentControl.ParentOfType<ScrollViewer>();

  int timeSlotsToSkip = 5;

  scrollVeiwer.ScrollToVerticalOffset(timeSlotsToSkip * timeSlotItemHeight);

  
  into the contructor of my xaml page that contains the RadScheduler control, after the InitializeComponents call, and it errors out on the linq query in the first line saying, "Sequence contains no matching elements"  I'm not sure if it makes a difference or not but the Scheduler control has no Appointments in it. 
  
  Do you have any other suggestions or perhaps that makes sense to you?
  
  Thanks again,
  
  Todd
  

  Reply

• Rosi Rosi

  Posted on May 3, 2010 (permalink)

  Hi Todd,
  
  This code should works as expected in Day and Week view. I suggest you set the ViewMode property to "Day" and let us known how this goes.
  
  Greetings,
  Rosi
  the Telerik team

  
  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

  Reply

• Todd

  Posted on May 3, 2010 (permalink)

  Hi again Rosi,
  
  Still doesn't work.  This is what my constructor looks like:
  
  

   

   

  public MainPage()

   

  {

      InitializeComponent();

      ProjectScheduler.ViewMode =

   

  SchedulerViewMode.Day;

   

   

   

  
      var appointmentControl = ProjectScheduler.ChildrenOfType<AppointmentsControl>().Single(ac => ac.Name == "NotAllDayAppointmentsControl");

   

   

   

      var timeSlotItemHeight = appointmentControl.ChildrenOfType<TimeSlotItem>().First().ActualHeight;

   

   

   

      var scrollVeiwer = appointmentControl.ParentOfType<ScrollViewer>();

   

   

   

      int timeSlotsToSkip = 5;

   

      scrollVeiwer.ScrollToVerticalOffset(timeSlotsToSkip * timeSlotItemHeight);
  .
  .
  .
  .
  
  It dies in the first line (var appointmentControl = ....) with an InvalidOperationException that says "Sequence contains no matching element"
  
  Am I doing something wrong?
  
  Todd

  Reply

• Rosi Rosi

  Posted on May 7, 2010 (permalink)

  Hi Todd,
  
  I suggest you set the ViewMode property in the XAML definition of RadScheduler instead of code-behind.
  Also, I suggest you change the code that throw the error like this:
  
  var appointmentControl = ProjectScheduler.ChildrenOfType<AppointmentsControl>().SingleOrDefault(ac => ac.Name == "NotAllDayAppointmentsControl");
  
  Regards,
  Rosi
  the Telerik team

  
  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

  Reply

• Daniel Billingsley Intermediate

  Posted on May 7, 2010 (permalink)

  Does anybody have this actually working, or are we just talking theoretical code here?
  
  When I implement this and set a breakpoint after the ScrollToVerticalOffset, the VerticalOffset property of the scrollViewer is still zero.
  
  I find this in the MSDN documentation for ScrollViewer:
  "The VerticalOffset property will not be updated until a layout pass has occurred. You can force an update by calling UpdateLayout."
  
  I've tried adding an UpdateLayout call right after setting the scroll position, both on the scrollViewer and then I tried on the parent scheduler control, and still I get no scrolling.
  
  What's missing to make this actually work?

  Reply

• Konstantina Konstantina

  Posted on May 13, 2010 (permalink)

  Hi Daniel,
  
  Thank you for contacting us.
  
  Attached I am sending you a sample project in which the desired behaviour is illustrated.
  Hope it helps.
  
  If you have further questions please do not hesitate to contact us again.
  
  Regards,
  Konstantina
  the Telerik team

  
  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

  Attached files

  • scheduler-navigatetohour.zip

  Reply

• Daniel Billingsley Intermediate

  Posted on May 14, 2010 (permalink)

  Yeah...um...
  
  I run that code and it does exactly what my code does... which is nothing.
  
  It works when I press the button, but doesn't automatically scroll when I switch to the week view.
  
  Does this code work on your system?

  Reply

• Konstantina Konstantina

  Posted on May 17, 2010 (permalink)

  Hello Daniel,
  
  To make it work you can add a Dispatcher to the following line:
  
  

  Dispatcher.BeginInvoke(new Action(() =>

  {

       scrollViewer.ScrollToVerticalOffset(timeSlotsToSkip * timeSlotItemHeight);

  }));

  
  If you have further questions please let us know.
  
  All the best,
  Konstantina
  the Telerik team

  
  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

  Reply

• Yan Li

  Posted on Aug 2, 2010 (permalink)

   

  I put the following codes in my constructor. However, it gives my error message right away saying AppointmentsControl doesn't contain 'Single' method and TimeSlotitem doesn't contain 'First' method. Do i need to include any assembly?
  
  var appointmentControl = this.scheduler.ChildrenOfType<AppointmentsControl> ().Single (ac => ac.Name == "NotAllDayAppointmentsControl");

   

   

  var timeSlotItemHeight = appointmentControl.ChildrenOfType<TimeSlotItem> ().First ().ActualHeight;

   

   

  ScrollViewer scrollVeiwer = appointmentControl.ParentOfType<ScrollViewer> ();

   

   

  int timeSlotsToSkip = 5;

   

  scrollVeiwer.ScrollToVerticalOffset (timeSlotsToSkip * timeSlotItemHeight);

  Reply

• Rosi Rosi

  Posted on Aug 3, 2010 (permalink)

  Hi Yan Li,
  
  I suggest you check whether you have defined a using of the System.Linq namespace:
  
  using System.Linq;
  
  Greetings,
  Rosi
  the Telerik team

  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

  Reply

• Thiyagu

  Posted on Nov 8, 2011 (permalink)

  It doesnot work when appoinment is null

  Reply

• Rosi Rosi

  Posted on Nov 8, 2011 (permalink)

  Hello Thiyagu,
  
  I suggest you review our RadScheduleView control and its ScrollIntoView method .
  
  Best wishes,
  Rosi
  the Telerik team

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