Cannot implement DbfDataReader getvalues method or datatable load method passing DbfDatareader as parameter

[kiriam]

cannot fill a array object with the DbfDataReader getvalues method..

i created a datatable manualy to filled with the values of dbf file to implementing filter on it like filtering by date column..
because DbfDataReader not have this feature. when try to run this code get the error : System.NotImplementedException: 'The method or operation is not implemented.'

where ird is a DbfDataReader variable.

Desktop (please complete the following information):

• OS: windows
  visual studio 2019
  C# , console app.