GetPropertyInfo

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

public static class ListSorter
{
public static List SortByProperty(List list, string propertyName, bool descending = false)
{
if (string.IsNullOrEmpty(propertyName)) return list;

    PropertyInfo prop = typeof(T).GetProperty(propertyName,
        BindingFlags.IgnoreCase | BindingFlags.Public | BindingFlags.Instance);
    if (prop == null) throw new ArgumentException($"Property '{propertyName}' not found.");

    return descending
        ? list.OrderByDescending(x => prop.GetValue(x, null)).ToList()
        : list.OrderBy(x => prop.GetValue(x, null)).ToList();
}

}