new public void Insert(int index, IndexField val)
{
if (this._index != null)
{
val.SetIndex(this._index);
}
if ( this.Contains(val) )
{
this.Remove(val);
}
this.Insert(index, val);
}
new public int Add(IndexField val)
{
if (this._index != null)
{
val.SetIndex(this._index);
}
if ( !this.Contains(val) )
{
return base.Add(val);
}
return -1;
}