Home / Community / Forums / ASP.NET AJAX > ToolTip > Adding an appointment to tooltip manager

• David

  Posted on Mar 2, 2009 (permalink)

  I don't understand why this isn't working......
  
  

   

   

   

  protected void RadScheduler1_AppointmentDataBound(object sender, SchedulerEventArgs e)

   

  {

   

      Appointment appt = e.Appointment;

   

   

      appt.ToolTip = appt.ID.ToString();

   

   

      RadToolTipManager1.TargetControls.Add(appt.ID.ToString());

   

  }

   

   

   

  
  I keep getting this:
  
  [NullReferenceException: Cannot find a server control with ID=2. If you need to specify a client-side element ID, please set IsClientID to true.]
     Telerik.Web.UI.RadToolTipBase.ThrowControlNotFound(String ctrlID) +61 blah blah blah blah blah
  
  I thought I'm supposed to feed RadToolTipManager1.TargetControls.Add the control's ID. I'm guessing that this is not the Appointment ID? How do I grab this?
  
  Sorry for two beginning ASP.NET questions today. This and the other small problem I posted about have me stuck, running in circles. Any assistance would be great.
  
  

  Reply

• David

  Posted on Mar 2, 2009 (permalink)

  Blew a few more hours tinkering with this and reading every single thing I could find on ToolTipManager.
  
  I could really use some help.
  
  A few more pieces of information:
  

  1. I cannot seem to be able to grab the clientID of RadSchedule appointments. (See below)
  2. The Appointment's ID field does not work with ToolTipManager's TargetControls method. (See below).

  Examples:
  

   

  protected

  void RadScheduler1_AppointmentDataBound(object sender, SchedulerEventArgs e)

   

  {

   

  e.Appointment.ToolTip = e.Appointment.ID.ToString();

   

   

  DataRowView row = (DataRowView)e.Appointment.DataItem;

   

   

  string subject = row["EODSubject"].ToString();

   

   

  string apptID = e.Appointment.ID.ToString();

   

   

  string clientID = e.Appointment.ClientID;

   

   

  lblDebug.Text += "xx - " + apptID + " - " + clientID + " - " + subject + " xx<br />";

   

   

  }

   

  The above code outputs this onto my page:
  
  xx - 2 - - MCCS TV Launch Edit xx
  xx - 3 - - TGIF xx
  xx - 3_0 - - TGIF xx
  xx - 3_1 - - TGIF xx
  xx - 3_2 - - TGIF xx
  xx - 3_3 - - TGIF xx
  xx - 3_4 - - TGIF xx
  xx - 4 - - Payday xx
  xx - 4_0 - - Payday xx
  xx - 4_1 - - Payday xx
  xx - 4_2 - - Payday xx
  xx - 6 - - TGIF xx
  xx - 7 - - New Activity xx
  xx - 9 - - Here is an event xx
  
  The clientID is not being grabbed. I have a feeling that that is the problem. HOW do I grab the ClientID? Can I please just have an answer and not a link to a guru sitting on top of a mountain? I really do not want to fight with this for another four hours.... Yes, I have already viewed all of your examples on using the ToolTipManager. It does not seem complicated at all. However, I am stuck and I just need guidance. Please assist.
  
  
  

  Reply

• David

  Posted on Mar 2, 2009 (permalink)

  Figured it out due to another thread. This code does the trick. Thanks Simon.
  
  

  protected

  void RadScheduler1_AppointmentCreated(object sender, AppointmentCreatedEventArgs e)

   

  {

   

  string clientID = e.Appointment.ClientID;

   

   

  RadToolTipManager1.TargetControls.Add(clientID, e.Appointment.ID.ToString(), true);

   

  }
  
  http://www.telerik.com/community/forums/aspnet-ajax/scheduler/radscheduler-with-radtooltipmanager-problem.aspx
  

  Reply

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