Loading Indicator

[Michael]

Is it possible to display a Loading Indicator when the Calendar is switching the displayed month?  My issue is that there is a noticeable UI hang when swiping to the next or previous month. 

[Kiril Stanoev]

Hello Michael,

Thank you for contacting us. One possible way to achieve what you're looking for is to use couple of events where you'll start or stop the busy indicator. This is what I have in mind.

<Grid HorizontalAlignment="Center" VerticalAlignment="Center">
    <telerikInput:RadCalendar ManipulationCompleted="RadCalendar_ManipulationCompleted"
            ManipulationDelta="RadCalendar_ManipulationDelta" />
    <telerikPrimitives:RadBusyIndicator x:Name="busyIndicator1" />
</Grid>

private void RadCalendar_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
{
    this.busyIndicator1.IsRunning = false;
}

private void RadCalendar_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
    this.busyIndicator1.IsRunning = true;
}

That being said, I agree with you that there is a certain delay while changing the display month. I've logged an item in our backlog to improve this functionality.

Give the above approach and try and let me know how it works for you. I'd be glad to further assist you.
Regards,
Kiril Stanoev
the Telerik team

[Michael]

That worked well thank you. 

[Ilya]

Hello, Kirill.
In Silverlight5 I have tried to implement this solution, but I get the exception:
"System.NotImplementedException occurred
  Message=The method or operation is not implemented.
  StackTrace:
       at System.Windows.UIElement.add_ManipulationCompleted(EventHandler`1 value)
  InnerException: "

How can I fix this problem?

[Kiril Stanoev]

Hi Ilya,

 According to MSDN, the ManipulationCompleted is not supported in Silverlight for desktop applications: http://msdn.microsoft.com/en-us/library/system.windows.uielement.manipulationcompleted(v=vs.95).aspx

You can have a look at this forum thread where alternatives are discussed: http://social.msdn.microsoft.com/Forums/en-US/silverlightarchieve/thread/22312bdb-1765-49c0-ba03-34e1fc19776c/

Regards,
Kiril Stanoev
the Telerik team