Immutable object base class

ImmutableDataObject.cs

using System.Linq;

public abstract class DataObject
{
    public override bool Equals(object obj)
    {
        var dataObj = obj as DataObject;

        if (dataObj == null) return false;

        return GetType().GetFields().Where(x => x.IsPublic).All(field => field.GetValue(this).Equals(field.GetValue(dataObj)));
    }

    public override int GetHashCode()
    {
        return GetType().GetFields().Where(x => x.IsPublic).Aggregate(17, (current, field) => current * 31 + field.GetValue(this).GetHashCode());
    }
}