To maintain the selection after rebind

[Shweta Patole]

Hi,

This is really urgent.

I want to maintain the selection of the item of carousal after its rebound or refreshed.

PLease find the code below which is not working;

int

 

iSelIndex = rdcTasks.Records.IndexOf(rdcTasks.SelectedRecord);
this.rdcTasks.ItemSource = list;

 

RadCarouselPanel

 

panel = this.rdcTasks.FindCarouselPanel();

 

panel.BringDataItemIntoView(rdcTasks.Records[iSelIndex]);

 

this.rdcTasks.Records[iSelIndex].IsSelected = true;

I have tried other properties like currentItem & Currentrecord but no gain.

REgards,
S

 

[Milan]

Hi Shweta Patole,

You can try the following:

var selectedIndex = this.RadCarousel1.Records.IndexOf(this.RadCarousel1.SelectedRecord);
this.RadCarousel1.SelectedRecord = null;
this.RadCarousel1.ItemsSource = myNewSource

this.Dispatcher.BeginInvoke(new Action(() =>
    {
        this.RadCarousel1.SelectedRecord = this.RadCarousel1.Records[selectedIndex];
    }), System.Windows.Threading.DispatcherPriority.SystemIdle, null);

Hope this works.


Greetings,
Milan
the Telerik team

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[Shweta Patole]

Hi

Thanks for your prompt reply.

I have tried the same thing, but there is a movement in te control. it moves to the first record and then moves back to the selected one. Is there any way to stop this so that user wouldnt know whats happening?
Regards,
Shweta

[Milan]

Hi Shweta Patole,

You could try setting the animation duration to zero and hiding the panel before the animation and after that restore the visibily and the duration. That might improve the experience but still there will be a single flicker. Here is a sample code:

public void Rebind()
{
    var panel = this.RadCarousel1.FindCarouselPanel();
    var duration = panel.ItemsMovementAnimationDuration;
    panel.ItemsMovementAnimationDuration = TimeSpan.Zero;
    var selectedIndex = this.RadCarousel1.Records.IndexOf(this.RadCarousel1.SelectedRecord);
    this.RadCarousel1.SelectedRecord = null;
    this.RadCarousel1.ItemsSource = null;
    this.RadCarousel1.ItemsSource = data;
    panel.Visibility = Visibility.Hidden;

    this.Dispatcher.BeginInvoke(new Action(() =>
        {
            this.RadCarousel1.SelectedRecord = this.RadCarousel1.Records[selectedIndex];
        }),  System.Windows.Threading.DispatcherPriority.SystemIdle, null);

    this.Dispatcher.BeginInvoke(new Action(() =>
    {
        panel.Visibility = Visibility.Visible;
        panel.ItemsMovementAnimationDuration = duration;
    }), System.Windows.Threading.DispatcherPriority.SystemIdle, null);

}

We will try to provide a better support for such scenarios in the future.

Greetings,
Milan
the Telerik team

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Check out the tips for optimizing your support resource searches.

[sridhar]

Hello,

        I have been using the rad carousal in a wpf application. I am unable to maintain the selected item of previous session, i.e when i select an item , then close the appln and then open i am not seeing the selected item.
please help me.
 Thanks
Sridhar