private void AddNewEntity()
        {
            Utilities.DataIO data           = new Profiles.Edit.Utilities.DataIO();
            string           newentity      = txtNewEntity.Text.Trim();
            string           entityclassuri = ddlAddNewPropertyList.SelectedValue.Trim();

            Session["pnlAddBySearch.Visible"] = null;
            Session["pnlAddByURI.Visible"]    = null;
            Int64 entityid = 0;

            entityid = data.AddNewEntity(newentity, entityclassuri);

            data.AddExistingEntity(this.SubjectID, this.PredicateID, entityid);

            this.LoadEntityGrid(true);
        }