How bad is opening and closing a SQL connection for several times? What is the exact effect?

Question

For example, I need to fill lots of DataTables with SQLDataAdapter\'s Fill() method:

DataAdapter1.Fill(DataTable1);
DataAdapter2.Fill(DataTable2);
DataAdapte         


        

Answer 1

NECRO ANSWER: The best way is to place the connection in a 'using' statement so that it is scoped to the work it needs to do:

using (SqlConnection conn = new SqlConnection())
{
    DataAdapter1.Fill(DataTable1);
    DataAdapter2.Fill(DataTable2);
    DataAdapter3.Fill(DataTable3);
    DataAdapter4.Fill(DataTable4);
    DataAdapter5.Fill(DataTable5);
    ...
    ...
}