bitwarden-android/src/App/Utilities/UpperCaseConverter.cs

using System;
using System.Globalization;
using Xamarin.Forms;

namespace Bit.App.Utilities
{
    public class UpperCaseConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if(targetType != typeof(string))
            {
                throw new InvalidOperationException("The target must be a string.");
            }

            if(value == null)
            {
                return string.Empty;
            }

            return parameter.ToString().ToUpper();
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotSupportedException();
        }
    }
}