StringToDecimalConverter.cs

using System;
using System.Globalization;
using Microsoft.Maui.Controls;
 
namespace NeuroAccessMaui.UI.Converters
{
    public class StringToDecimalConverter : IValueConverter
    {
        public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is decimal DecimalValue)
                return DecimalValue.ToString(culture);
 
            return string.Empty;
        }
 
        public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            // First, check if the input is null or whitespace and handle it accordingly
            if (value is string Str)
            {
                if (string.IsNullOrWhiteSpace(Str))
                    return null;  // Return null if the string is empty or whitespace
 
                if (decimal.TryParse(Str, NumberStyles.Any, culture, out decimal DecimalValue))
                    return DecimalValue;
            }
 
            return null;  // Return null if the input is null or not a valid decimal
        }
    }
}