Private _pmks_allow_fulltext_search As Boolean = False <Description("Make fulltextsearch textbox visible")> _ <Category("MKS Toolbar GridControl")> _ <DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Visible)> _ Public Property pmks_allow_fulltext_search() As Boolean Get Return _pmks_allow_fulltext_search End Get Set(ByVal value As Boolean) _pmks_allow_fulltext_search = value End Set End PropertyI already add attribute DesignerSerializationVisibility, it does not help.. and without this attribute it also does not generates the code in designer file.