c# - Large datasets with unknown total rows -


i have rather interesting problem solve, , not sure how approach best way.

given such interface

public interface idatacursor {     bool eof();     bool next();     bool prev();     bool first();     bool last();      int getcolumncount();     object getvalue(int columnindex); // return value given column current cursor position }

which points large data structure, , need display in grid. of virtual modes require total number of records known. doesn't work on case. can navigate back/forth.

does know of kind of datasource implementation implement similar interface?

none of existing free or commercial libraries offer such possibility, of them require total number of rows.

i tried calculate number of visible records datagtidview somehow navigate through dataset , update content of underlying datasource, data won't display pretty reliable.

looking advises, thank you.

perform query select count(*) table_name my_where_cluase; , use same my_where_cluase while populating grid


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