How to identify when end of the list is reached on scrolling in .NET MAUI ListView (SfListView) ?
The .NET MAUI ListView (SfListView) allows you to identify when the end of the list is reached while scrolling. By using the Changed event of ScrollAxisBase in VisualContainer, you can determine if you have reached the last item in the list based on the LastBodyVisibleLineIndex property and underlying collection count.
C#
You can get the item elements held by a scrollable visual container using the GetVisualContainer helper method.
public class ListViewBehavior : Behavior<SfListView>
{
SfListView ListView;
VisualContainer VisualContainer;
bool isAlertShown = false;
int totalItems = 0;
protected override void OnAttachedTo(SfListView bindable)
{
ListView = bindable;
ListView.Loaded += ListView_Loaded;
VisualContainer = ListView.GetVisualContainer();
VisualContainer.ScrollRows.Changed += ScrollRows_Changed;
base.OnAttachedTo(bindable);
}
private void ListView_Loaded(object sender, EventArgs e)
{
//To include header if used
var header = (ListView.HeaderTemplate != null && !ListView.IsStickyHeader) ? 1 : 0;
//To include footer if used
var footer = (ListView.FooterTemplate != null && !ListView.IsStickyFooter) ? 1 : 0;
totalItems = ListView.DataSource.DisplayItems.Count + header + footer;
}
private void ScrollRows_Changed(object sender, ScrollChangedEventArgs e)
{
var lastIndex = VisualContainer.ScrollRows.LastBodyVisibleLineIndex;
if (lastIndex != -1 && (lastIndex == totalItems - 1))
{
if (!isAlertShown)
{
App.Current.MainPage.DisplayAlert("Alert", "End of list reached...", "Ok");
isAlertShown = true;
}
}
else isAlertShown = false;
}
}Download the complete sample on GitHub.
I hope you enjoyed learning how to identify when the end of the list is reached on scrolling in the .NET MAUI ListView.
You can refer to our .NET MAUI ListView feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started with configuration specifications. Explore our .NET MAUI ListView example to understand how to create and manipulate data.
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