Редактирование ячейки datagridview по значению textBox (Access)

OleDbConnection myOleDbConnection = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\Users\\Admin1\\source\\repos\\WindowsFormsApp1\\DataBase.accdb;");
myOleDbConnection.Open();
OleDbCommand comm = new OleDbCommand();
OleDbCommand myOleDbCommand = myOleDbConnection.CreateCommand();
myOleDbCommand.Parameters.AddWithValue("@mesto", textBox4.Text);
comm.CommandText = "SELECT inf  FROM [РЕЙС] where [КОЛ-ВО_МЕСТ] = @mesto";
comm.Connection = myOleDbConnection;
int sal = (int)comm.ExecuteScalar();
textBox5.Text = sal.ToString();
myOleDbConnection.Close();

OleDbConnection Connection = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\Users\\Admin1\\source\\repos\\WindowsFormsApp1\\DataBase.accdb;");
Connection.Open();
OleDbCommand myOleDbCommand = Connection.CreateCommand();
myOleDbCommand.Parameters.AddWithValue("@mesto", textBox5.Text);
myOleDbCommand.Parameters.AddWithValue("@reys", textBox4.Text);
myOleDbCommand.CommandText = "UPDATE inf SET [Кол-во_мест] =@mesto WHERE [РЕЙС] = @reys ";
myOleDbCommand.ExecuteNonQuery();
MessageBox.Show("Готово");