How to hide the empty rows of a list view in xamarin.forms

So, the solution I found is to force listview layout every time you add/remove an item. You also need to wrap the list in stacklayout.

<StackLayout BackgroundColor="LightGray">
    <Label Text="Liquit Zones" TextColor="Gray" FontSize="Small" Margin="10"/>

    <StackLayout>
    <ListView x:Name="ItemsListView" SeparatorColor="LightGray" BackgroundColor="Green" RowHeight="60" >
        <ListView.ItemTemplate>
            <DataTemplate>
                <ViewCell>
                    <ViewCell.ContextActions>
                        <MenuItem Clicked="AddItemClicked" Text="Add" />
                        <MenuItem Clicked="RemoveItemClicked" CommandParameter="{Binding .}" Text="Trash" IsDestructive="True" />
                    </ViewCell.ContextActions>
                    <StackLayout Padding="15, 5, 0, 0" Orientation="Horizontal" BackgroundColor="White">
                        <Image Source="{Binding Image}" HorizontalOptions="Start"/>
                        <StackLayout Orientation="Vertical">
                            <Label Text = "{Binding ItemText}" FontSize="20" TextColor="Black" />
                            <Label Text = "{Binding ItemDetail}" TextColor="LightGray" />
                        </StackLayout>
                    </StackLayout>
                </ViewCell>
            </DataTemplate>
        </ListView.ItemTemplate>
        <ListView.Footer>
            <Label />
        </ListView.Footer>
    </ListView>
    </StackLayout>

    <Button Text="Add Item" TextColor="Black" HorizontalOptions="FillAndExpand" FontSize="Medium" Clicked="AddItemClicked" BackgroundColor="White"/>
</StackLayout>

Because you know your cell height you can do this:

       void AddItemClicked(object sender, EventArgs e)
        {
            SampleData data = new SampleData();
            data.ItemText = "An Item";
            data.ItemDetail = "Item - " + (itemsListCollection.Count + 1).ToString();
            itemsListCollection.Add(data);

            ItemsListView.HeightRequest = itemsListCollection.Count * 60;
            //ForceLayout();
        }

    void RemoveItemClicked(object sender, EventArgs e)
    {

        SampleData item =(SampleData)((MenuItem)sender).CommandParameter;
        if (item != null)
        {
            itemsListCollection.Remove(item);
        }
        ItemsListView.HeightRequest = itemsListCollection.Count * 60;

    }


class SampleData:INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    private string itemText;
    public string ItemText
    {
        get
        {
            return itemText;
        }
        set
        {
            itemText = value;
            NotifyPropertyChanged("ItemText");
        }
    }
    private string itemDetail;
    public string ItemDetail
    {
        get
        {
            return itemDetail;
        }
        set
        {
            itemDetail = value;
            NotifyPropertyChanged("ItemDetail");
        }
    }
    private void NotifyPropertyChanged(string propName)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(propName));
        }
    }
}

An easy way to remove the empty rows of a ListView is to set an empty footer for the ListView.

ListView HeaderList = new ListView()
    {
       Footer = ""
    };

or in XAML

<ListView  x:Name="HeaderList" Footer=""></ListView>