public override void Delete()
{
Type t = this.GetType();
FieldInfo[] infos = t.GetFields();
for (int i = 0; i < infos.Length; i++)
{
FieldInfo fi = infos[i];
if (IsBaseType(fi.FieldType, typeof(SBase)))
{
SBase v = fi.GetValue(this) as SBase;
v.Delete();
}
}
}