Auto-filter for Microsoft WPF DataGrid

using System;
using System.Windows.Data;

namespace Stepi.UIFilters
{
    /// <summary>
    /// 
    /// </summary>
    public class EnumConverter : IValueConverter
    {
        #region IValueConverter Members

        /// <summary>
        /// Modifies the source data before passing it to the target for display in the UI.
        /// </summary>
        /// <param name="value">The source data being passed to the target.</param>
        /// <param name="targetType">The <see cref="T:System.Type"/> of data expected by the target dependency property.</param>
        /// <param name="parameter">An optional parameter to be used in the converter logic.</param>
        /// <param name="culture">The culture of the conversion.</param>
        /// <returns>
        /// The value to be passed to the target dependency property.
        /// </returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value == null || !value.GetType().IsEnum)
            {
                throw new ArgumentException("Only excepting string/enum as target type.");
            }
            return value.ToString();
        }

        /// <summary>
        /// Modifies the target data before passing it to the source object.  This method is called only in <see cref="F:System.Windows.Data.BindingMode.TwoWay"/> bindings.
        /// </summary>
        /// <param name="value">The target data being passed to the source.</param>
        /// <param name="targetType">The <see cref="T:System.Type"/> of data expected by the source object.</param>
        /// <param name="parameter">An optional parameter to be used in the converter logic.</param>
        /// <param name="culture">The culture of the conversion.</param>
        /// <returns>
        /// The value to be passed to the source object.
        /// </returns>
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (!targetType.IsEnum)
            {
                throw new ArgumentException("Expecting the target type to be Enum.");
            }
            string toConvert = value as string;
            if (string.IsNullOrEmpty(toConvert))
            {
                throw new ArgumentException("Invalid input value. It is expecting string to convert to enum.");
            }
            try
            {
                return Enum.Parse(targetType, toConvert, false);
            }
            catch
            {
                throw new ArgumentException("Invalid input value, does not map to the Enum values.");
            }
        }

        #endregion
    }
}