RadControls for WPF

Some developers want to play different animation or no animation the first time Content is set. This may due to loading remote data or just a matter of graphic, animation or interaction design. You could easily achieve that by setting different transition on interrupted or completed. For example you could set the initial duration of a transition to be 0:0:0 like this in XAML:

CopyXAML

<telerik:RadTransitionControl x:Name="TransitionControl"
             Duration="0:0:0"         
             TransitionStatusChanged="RadTransitionControl_TransitionStatusChanged">
...
</telerik:RadTransitionControl>

And then in code behind set the duration to a reasonable time span after the first content appears:

CopyC#

private void RadTransitionControl_TransitionStatusChanged(object sender, TransitionStatusChangedEventArgs e)
{
    if (e.Status == TransitionStatus.Completed)
    {
        this.TransitionControl.Duration = new TimeSpan(0, 0, 1);
    }
}