AppointmentInsert() not updating until page is manually refreshed

[Michael Malone]

When I add an appointment to the RadScheduler it writes the record to the database in the AppointmentInsert() function. This properly saves the record but doesn't update the RadScheduler for the user. They have to manually refresh their browser for the changes to appear. How do I get it to update after every event without the user hitting refresh in the browser? 

protected void Page_Load(object sender, EventArgs e)
{
    DrAppointment app = new DrAppointment();

    RadScheduler1.DataSource = app.GetAll();
    RadScheduler1.DataBind();

    RadScheduler1.AppointmentInsert += new Telerik.Web.UI.AppointmentInsertEventHandler(RadScheduler1_AppointmentInsert);
    RadScheduler1.AppointmentUpdate += new Telerik.Web.UI.AppointmentUpdateEventHandler(RadScheduler1_AppointmentUpdate);
    RadScheduler1.AppointmentDelete += new Telerik.Web.UI.AppointmentDeleteEventHandler(RadScheduler1_AppointmentDelete);
    RadScheduler1.FormCreated += new Telerik.Web.UI.SchedulerFormCreatedEventHandler(RadScheduler1_FormCreated);
}


void RadScheduler1_AppointmentInsert(object sender, Telerik.Web.UI.SchedulerCancelEventArgs e)
{
    if (ExceedsLimit(e.Appointment))
    {
        lblError.Text = "Another appointment exists in this time slot.";
        e.Cancel = true;
    }
    else
    {
        DrAppointment app = new DrAppointment(e.Appointment);
        app.Save();

    }
}

[Michael Malone]

Looks like I have to set the DataSource property in each event and then call DataBind(). 

[Peter]

Hi Michael,

You can also try calling RadScheduler's Rebind() method in the AppointmentInsert handler right after app.Save(); 


Greetings,
Peter
the Telerik team

[Michael Malone]

Hmm, that's what I initially thought. I just went back and tried that again... calling RachScheduler1.Rebind() after save but it still doesn't appear to be updating the page for the user?

[Peter]

You are right. Sorry for misleading you. With the Rebind method() RadScheduler still uses the old data source so it won't help. The solution you have discovered seems to be optimal for this case.

Best wishes,
Peter
the Telerik team

[Greg Ogle]

I seem to be having a similar issue, though my DataSource is a LinqToSQL object, and the solution doesn't work in my case.  

Here is the code snippets of my code:

void Scheduler_AppointmentInsert(object sender, Telerik.Web.UI.SchedulerCancelEventArgs e)
{
    //Calendar Item is a LinqToSql object
    var item = new CalendarItem()
    {
        UserId = userId;
        StartDate = e.Appointment.Start,
        EndDate = e.Appointment.End,
        Subject = e.Appointment.Subject
    };

    repo.Add(item); //Adds the Item via InsertOnSubmit in LinqToSql Data Context
    repo.Save(); //Submits changes via LinqToSql Data Context


        Scheduler.DataSource = repo.GetCalendarItems(); //return LinqToSql IEnumerable<CalendarItems>

    Scheduler.DataBind();
    //tried Rebind() too
}

 If I make an additional change, whether edit, insert, or delete, I will see this change.  It always shows the previous change.

The only thing that works so far is a Response.Redirect, but that loses all ViewState.

[Peter]

Hello Greg,

I can't find anything with your code that could cause the problem. Do you have a simple working demo which you can send us via a support ticket for testing?


Greetings,
Peter
the Telerik team

[Greg Ogle]

Thanks for looking at this.  I finally found that it was not properly binding in the Page_Load, but rather always binding in OnInit.