...
OleDbCommand command = new OleDbCommand();
OleDbConnection co = new OleDbConnection();
DataSet DS = new DataSet();
co.ConnectionString = connectionString;
command.Connection = co;
command.CommandType = CommandType.Text;
command.CommandText = commandString;
try
{
co.Open();
OleDbDataAdapter DataAdapter = new OleDbDataAdapter(command);
DataAdapter.Fill(DS);
dataGrid.DataSource = DS.Tables[0];
co.Close();
}
catch
{
MessageBox.Show("Neka poruka");
}
...