AnotherReplayReader/Apm/DataValue.cs

using System;

namespace AnotherReplayReader.Apm
{
    internal class DataValue : IComparable<DataValue>, IComparable
    {
        public int? NumberValue { get; }
        public string Value { get; }

        public DataValue(string value)
        {
            Value = value;
            if (int.TryParse(value, out var numberValue))
            {
                NumberValue = numberValue;
            }
        }

        public override string ToString() => Value;

        public int CompareTo(DataValue other)
        {
            if (NumberValue.HasValue == other.NumberValue.HasValue)
            {
                if (!NumberValue.HasValue)
                {
                    return Value.CompareTo(other.Value);
                }
                return NumberValue.Value.CompareTo(other.NumberValue!.Value);
            }
            return NumberValue.HasValue ? 1 : -1;
        }

        public int CompareTo(object obj)
        {
            if (obj is DataValue other)
            {
                return CompareTo(other);
            }
            throw new NotSupportedException();
        }
    }
}