How do I prevent PullToRefreshIndicator go to invisible.

[지혜]

I want to show PullToRefreshIndicator even though a listbox has no items.
Could tell me how to do?

[Rosy Topchiyska]

Hello,

Thank you for contacting us.

You can set the RadDataBoundListBox.ShowPullToRefreshWhenNoData property to true to enable the pull to refresh functionality when the ItemsSource of the control is empty.

I hope this helps. Please, let us know if you have further questions.

Regards,
Rosy Topchiyska
Telerik

 

 

[지혜]

I found a case that PullToRefresh Indicator is not shown even though ShowPullToRefreshWhenNoData property set to True. I'm attaching a sample project. Please fix it if it is a bug.


=======xaml=====================
<telerik:RadDataBoundListBox
                x:Name="listBox"
                CacheMode="BitmapCache"
                IsTabStop="False"
                IsPullToRefreshEnabled="True"
                ShowPullToRefreshWhenNoData="True"
                HorizontalContentAlignment="Stretch"
                DataVirtualizationMode="OnDemandAutomatic"
                Visibility="Collapsed"/>
================xaml.cs================
public MainPage()
        {
            InitializeComponent();
            Loaded += MainPage_Loaded;
        }
        async void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            await Task.Delay(1000);
            listBox.Visibility = System.Windows.Visibility.Visible;
        }

[Rosy Topchiyska]

Hello,

Thank you for the example. Indeed there is a problem with the PullToRefreshIndicator when the listbox Visibility is initially set to Collapsed. Our developers will further investigate this issue. As a workaround you can create the listbox with Visibility set to Visible and collapse it later, when the control has been loaded.

<telerikPrimitives:RadDataBoundListBox ShowPullToRefreshWhenNoData="True" Loaded="ListBoxLoaded" IsPullToRefreshEnabled="True"/>

private void ListBoxLoaded(object sender, System.Windows.RoutedEventArgs e)
{
    (sender as RadDataBoundListBox).Visibility = System.Windows.Visibility.Collapsed;
}

I hope this helps. I have updated your Telerik points as a token of gratitude for bringing this issue to our attention. Feel free to contact us should you have any other problems.

Regards,

Rosy Topchiyska
Telerik