XamarinFaceBot: PaginaBot.xaml

PaginaBot.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="XamarinFaceBot.Paginas.PaginaBot">
    <ContentPage.Content>
        <StackLayout Spacing="10" Padding="10" HorizontalOptions="Fill" VerticalOptions="Fill" Orientation="Vertical">
            <ListView x:Name="lsvMensajes" VerticalOptions="StartAndExpand" HorizontalOptions="Fill" HasUnevenRows="true">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <StackLayout Orientation="Vertical">
                                <Label VerticalOptions="StartAndExpand" HorizontalOptions="Fill" HorizontalTextAlignment="{Binding LblMensajeTextAlignment}" Text="{Binding Texto}" FontSize="Large"/>
                                <Label VerticalOptions="End" HorizontalOptions="Fill" HorizontalTextAlignment="{Binding LblEmisorTextAlignment}" TextColor="Accent" Text="{Binding Emisor}" FontSize="Small"/>
                            </StackLayout>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>

            <StackLayout Orientation="Horizontal" HorizontalOptions="FillAndExpand">
                <Entry x:Name="txtMensaje" Placeholder="Escribe un mensaje" HorizontalTextAlignment="End" Margin="10" VerticalOptions="End" HorizontalOptions="FillAndExpand"/>
                <Button x:Name="btnEnviar" Text="Enviar" WidthRequest="100" Clicked="btnEnviar_Clicked" Margin="10"/>
            </StackLayout>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>