我试过以下代码:
OleDbConnection My_Connection = new OleDbConnection("Provider=Microsoft.Jet...
My_Connection.Open();
string sql = " UPDATE Rooms SET [Room Status] = 'Taken', [Available] = 'No' WHERE [RoomNumber] = " + textBox5.Text;
OleDbCommand My_Command = new OleDbCommand(sql, My_Connection);
My_Command.ExecuteNonQuery();
My_Connection.Close();
错误是:标准表达式中的数据类型不匹配