DemoPage.Xaml

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="BinnyXamConcepts2017.HorizontalListView.DemoPage"
             xmlns:controls="clr-namespace:DLToolkit.Forms.Controls;assembly=DLToolkit.Forms.Controls.FlowListView">
  <StackLayout>

    <controls:FlowListView x:Name="myList" 
                           FlowColumnCount="3" 
                           SeparatorVisibility="None" 
                           HasUnevenRows="false"
                           FlowItemTapped="FlowListView_OnFlowItemTapped"
                           BackgroundColor="White"  >
                         

      <controls:FlowListView.FlowColumnTemplate>
        <DataTemplate>
          <StackLayout>
          <Label HorizontalOptions="Fill" 
                 VerticalOptions="Fill"
                 Text="{Binding }"/>
          </StackLayout>
        </DataTemplate>
      </controls:FlowListView.FlowColumnTemplate>

    </controls:FlowListView>

  </StackLayout>
</ContentPage>