hi,
you can use ObjectDataSource for fill your pagedatasource by this code :
PagedDataSource1.DataSource = ObjectDataSource1.Select();
or use SqlDatatSource with this :
DataSourceSelectArguments arg = new DataSourceSelectArguments();
DataView dv = (DataView)SqlDataSource1.Select(arg);
PagedDataSource PagedDataSource1 = new PagedDataSource();
PagedDataSource1.DataSource = dv;