Question: I'm completely new to xamarin.forms, I need to add a checkbox, radio buttons and drop down list. I tried some samples from net but I'm not able to get the checkbox. Can anyone help me to achieve this in xamarin.forms?

Xaml file

```
<toolkit:CheckBox Text ="Employee"
                  FontSize="20"
                  CheckedChanged ="OnClicked"/>

```

or

```
<controls:CheckBox DefaultText="Default text"
                               HorizontalOptions="FillAndExpand"
                               TextColor="Green"
                               FontSize="25"
                               FontName="AmericanTypewriter"/>

```

Some links or sample code will make it easier to understand.

Answer: 
Based on Kasper Answers, but using the image instead of a button so that it will not show the shadow.

```
public class CustomCheckbox : Image
{
    private const string CheckboxUnCheckedImage = "checkbox_unchecked";
    private const string CheckboxCheckedImage = "checkbox_checked";

    public CustomCheckbox()
    {
        Source = CheckboxUnCheckedImage;
        var imageTapGesture = new TapGestureRecognizer();
        imageTapGesture.Tapped += ImageTapGestureOnTapped;
        GestureRecognizers.Add(imageTapGesture);
        PropertyChanged += OnPropertyChanged;
    }

    private void ImageTapGestureOnTapped(object sender, EventArgs eventArgs)
    {
        if (IsEnabled)
        {
            Checked = !Checked;
        }
    }

    /// <summary>
    /// The checked changed event.
    /// </summary>
    public event EventHandler<bool> CheckedChanged;

    /// <summary>
    /// The checked state property.
    /// </summary>
    public static readonly BindableProperty CheckedProperty = BindableProperty.Create("Checked", typeof(bool), typeof(CustomCheckbox), false, BindingMode.TwoWay, propertyChanged: OnCheckedPropertyChanged);

    public bool Checked
    {
        get
        {
            return (bool)GetValue(CheckedProperty);
        }

        set
        {
            if (Checked != value)
            {
                SetValue(CheckedProperty, value);
                CheckedChanged?.Invoke(this, value);
            }
        }
    }

    private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
    {
        if (e?.PropertyName == IsEnabledProperty.PropertyName)
        {
            Opacity = IsEnabled ? 1 : 0.5;
        }
    }

    private static void OnCheckedPropertyChanged(BindableObject bindable, object oldValue, object newValue)
    {
        var checkBox = bindable as CustomCheckbox;
        if (checkBox != null)
        {
            var value = newValue as bool?;
            checkBox.Checked = value.GetValueOrDefault();
            checkBox.Source = value.GetValueOrDefault() ? CheckboxCheckedImage : CheckboxUnCheckedImage;
        }
    }
}

```
Now Xamarin Forms has their own CheckBox.

```
<CheckBox IsChecked="{Binding IsChecked}"/>

```