grimorde

using System.ComponentModel;
using System.Runtime.CompilerServices;
using MyWandle.Core.Enums;

namespace MyApp.Core.Models
{
	public class MediaAsset : INotifyPropertyChanged
	{
		private bool _isSelected;
		public string Id { get; set; }

grimorde

using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using MvvmHelpers;

namespace MyApp.Controls
{
	public class ItemsChangeObservableRangeCollection<T> :
		   ObservableRangeCollection<T> where T : INotifyPropertyChanged

grimorde

<?xml version="1.0" encoding="utf-8" ?>
<Application xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:converter="clr-namespace:MyApp.Converter;assembly=MyApp"
             x:Class="MyApp.App">
    <Application.Resources>

        <ResourceDictionary>
            <converter:ItemTappedEventArgsConverter x:Key="ItemTappedEventArgsConverter" />
            <converter:FirstValidationErrorConverter x:Key="FirstValidationErrorConverter" />

grimorde

<Label
  Grid.Column="0"
  FontFamily="{StaticResource MaterialFontFamily}"
  Style="{StaticResource IconStyle}"
  Text="{Binding Direction, Converter={StaticResource DirectionIconConverter}}" />

grimorde

    public class DirectionIconConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var direction = value.ToString().ToLower();
            switch (direction)
            {
                case "north":
                    return IconConstants.ArrowUpBoldCircle;
                case "south":

grimorde

<ListView>
	<ListView.ItemTemplate>
		<DataTemplate>
			<ViewCell>
				<Grid
				Padding="5"
				BackgroundColor="{Binding ., Converter={StaticResource AlternateRowColourConverter}, ConverterParameter={x:Reference ItemsToFit}}"
				HorizontalOptions="FillAndExpand">
				<!-- your stuff here -->
				</Grid>

grimorde

    public class AlternateRowColourConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null || parameter == null) return Color.LightGray;
            var index = ((ListView)parameter).ItemsSource.Cast<object>().ToList().IndexOf(value);

            if (index % 2 == 0)
            {
                return "#eaecef";

grimorde

<?xml version="1.0" encoding="utf-8" ?>
<ResourceDictionary
    x:Class="MyApp.Styles.Indicator"
    xmlns="http://xamarin.com/schemas/2014/forms"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml">

    <ControlTemplate x:Key="MainTemplate">
        <Grid BindingContext="{TemplateBinding BindingContext}">
            <ContentPresenter Grid.Row="0" />

grimorde

public class StringHasValueConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null) return false;
            return !string.IsNullOrEmpty(value.ToString());
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {

grimorde

public class EventToCommandBehavior : BindableBehavior<Xamarin.Forms.View>
    {
        public static BindableProperty CommandProperty =
            BindableProperty.CreateAttached(
                "Command",
                typeof(ICommand),
                typeof(EventToCommandBehavior),
                null,
                BindingMode.OneWay);