Implementation of IErrorStyle for basic errors

BasicErrorStyle.cs

using Xamarin.Forms;
using XamarinFormValidation.Validators.Contracts;

namespace XamarinFormValidation.Validators.Implementations
{
    public class BasicErrorStyle: IErrorStyle
    {
        public void ShowError(View view, string message)
        {
            StackLayout layout = view.Parent as StackLayout;
            int viewIndex = layout.Children.IndexOf(view);

            if(viewIndex + 1 < layout.Children.Count) {
                View sibling = layout.Children[viewIndex + 1];
                string siblingStyleId = view.Id.ToString();
                // Reuse the existing label
                if (sibling.StyleId == siblingStyleId)
                {
                    Label errorLabel = sibling as Label;
                    errorLabel.Text = message;
                    errorLabel.IsVisible = true;

                    return;
                }
            }
            // Add new label if none exists
            layout.Children.Insert(viewIndex + 1, new Label
            {
                Text = message,
                FontSize = 10,
                StyleId = view.Id.ToString(),
                TextColor = Color.Red
            });
        }

        public void RemoveError(View view)
        {
            StackLayout layout = view.Parent as StackLayout;
            int viewIndex = layout.Children.IndexOf(view);

            if (viewIndex + 1 < layout.Children.Count)
            {
                View sibling = layout.Children[viewIndex + 1];
                string siblingStyleId = view.Id.ToString();

                if (sibling.StyleId == siblingStyleId)
                {
                    sibling.IsVisible = false;
                }
            }
        }
    }
}