WPF_Practice/PacticeSolution/ValueConverterSample/Converter/YesNoToBoolConverter.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace ValueConverterSample.Converter
{
    internal class YesNoToBoolConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
                return false;

            switch (value.ToString().ToUpper())
            {
                case "YES":
                    return true;
                case "NO":
                    return false;
                default:
                    return false;
            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (!(value is bool))
                return "NO";

            bool converted = (bool)value;
            if (converted)
                return "YES";
            else
                return "NO";
        }
    }
}