Question

Each time I use Merge() I have the following: ‘Cannot implicitly convert type ‘void’ to ‘System.Data.DataTable’.

Can you please let me know what is wrong in my code ?

DataRow[] befdvd = toverify.Select("Date < '# " + dvddate + "#'");
DataRow[] aftdvd = toverify.Select("Date => '# " + dvddate + "#'");
foreach (DataRow dr in befdvd ) 
 dr[gl.EX_PRICE] = (double)dr[gl.EX_PRICE] * dvdfact;
 DataTable beff = befdvd.CopyToDataTable();
 DataTable Aftt = aftdvd.CopyToDataTable();
 toverify = beff.Merge(Aftt);

Thanks

Answer 1

Read the error message.

Merge() returns void.
You can’t assign that to a DataTable variable.

Merge() merges the second table into the first one; it does not create a new table.