Custom property of a custom control not being set - xamarin forms - data-binding

Question

I'm trying to create a custom entry control with EntryType property which I then use inside custom renderers to set platform specific values. But the EntryType is never set when used from Xaml. Here's my code:
public class ExtendedEntry : Xamarin.Forms.Entry
{
public static readonly BindableProperty EntryTypeProperty = BindableProperty.Create(
propertyName: "EntryType",
returnType: typeof(int),
declaringType: typeof(EntryTextType),
defaultValue: 1
);
public EntryTextType EntryType
{
get
{
return (EntryTextType)GetValue(EntryTypeProperty);
}
set
{
SetValue(EntryTypeProperty, value);
}
}
protected override void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
base.OnPropertyChanged(propertyName);
if (propertyName == EntryTypeProperty.PropertyName)
{
}
}
}
public enum EntryTextType
{
Any,
Numeric,
Url,
Email
}
public class ExtendedEntryRenderer : EntryRenderer
{
public ExtendedEntryRenderer(Android.Content.Context context) : base(context)
{
}
protected override void OnElementChanged(ElementChangedEventArgs<Entry> e)
{
base.OnElementChanged(e);
if (Control != null)
{
var element = (ExtendedEntry)Element;
Control.Hint = element.Placeholder;
switch(element.EntryType)
{
case EntryTextType.Numeric:
Control.SetRawInputType(Android.Text.InputTypes.ClassNumber);
break;
default:
break;
}
}
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
var p = e.PropertyName;
base.OnElementPropertyChanged(sender, e);
}
}
And then in XAML, I use the control as this:
<controls:ExtendedEntry Placeholder="Password" IsPassword="True" Text="{Binding Secret}" EntryType="Any"/>
The problem is, EntryType never gets set to EntryTextType.Any, and always uses the default value of EntryTextType.Numeric. What am I missing here? Thanks.

Answer 1

I noticed some discrepancies in the EntryTypeProperty declaration.
Declaring type should be the owner which is ExtendedEntry
And, to instruct XAML to use the enum TypeConverter, you will have to define the datatype as EntryTextType
So your new code will look like:
public static readonly BindableProperty EntryTypeProperty = BindableProperty.Create(
propertyName: "EntryType",
returnType: typeof(EntryTextType),
declaringType: typeof(ExtendedEntry),
defaultValue: EntryTextType.Numeric
);