Question

下面我使用的是MySqlDataReader，想知道如何循环遍历所有列名和值，并通过列名和列值的键和值将它们添加到<string,string>字典中？我的代码低于我如何使用阅读器。

protected bool TryLoadPlayerData(PlayerConnection playerConnection, string sso)
{
    try
    {
        SetPlayer(playerConnection);

        using (var databaseConnection = Hariak.HariakServer.Database.NewDatabaseConnection)
        {
            databaseConnection.SetQuery("SELECT * FROM `users` WHERE `auth_ticket` = @sso LIMIT 1;");
            databaseConnection.AppendParameter("sso", sso);


            using (MySqlDataReader reader = databaseConnection.ExecuteReader())
            {
                while (reader.Read())
                {
                    // loop through columns here...
                }
            }
        }

        Logger.Info("Loaded PlayerData for " + SelectColumn("username"));
        return true;
    }
    catch (Exception exception)
    {
        Logger.Error(exception, "Failed to load PlayerData for player.");
        return false;
    }
}

Answer 1

我要做的就是遍历所有FieldCount，这样您就可以获得每个返回行的索引，然后使用GetName和GetValue

将它们添加到字典中

protected bool TryLoadPlayerData(PlayerConnection playerConnection, string sso)
{
    try
    {
        SetPlayer(playerConnection);

        using (var databaseConnection = Hariak.HariakServer.Database.NewDatabaseConnection)
        {
            databaseConnection.SetQuery("SELECT * FROM `users` WHERE `auth_ticket` = @sso LIMIT 1;");
            databaseConnection.AppendParameter("sso", sso);


            using (MySqlDataReader reader = databaseConnection.ExecuteReader())
            {
                Dictionary<string, string> dictionary = new Dictionary<string, string>();
                for (int i = 0; i < reader.FieldCount; i++)
                    {
                        dictionary.Add(reader.GetName(i), reader.GetValue(i));
                    }
            }
        }

        Logger.Info("Loaded PlayerData for " + SelectColumn("username"));
        return true;
    }
    catch (Exception exception)
    {
        Logger.Error(exception, "Failed to load PlayerData for player.");
        return false;
    }
}

遍历MySql阅读器中的每个列名称和值？

1 个答案: