如何更有效地将字典数据或数组列表数据保存到playerprefs？

有谁知道如何将字典数据或数组列表数据更有效地保存到playerprefs？

例如，我有一个课程项目：

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

// Make Class Item
public class item {
    public string itemName;
    public int itemID;
    public string itemDesc;
    public string itemIcon;
    public GameObject itemModel;
    public int itemTime;
    public int hightprice;
    public int stdprice;
    public int itemStock;
    public int harvest;
    public RawTree rawTree;
    public ItemType itemType;
    public ItemProd itemProd;
    public ItemLocation itemLocation;
    public ItemMerchant itemMerchant;
    public int Lvlunlock;
    private string baseName;
    public int spawnRate;
    public int minqtySpawnBuy;
    public int maxqtySpawnBuy;
    public int minqtySpawnSell;
    public int maxqtySpawnSell;
    public int itemExp;


    public enum ItemType {
        Raw,
        Admirable,
        Valuable
    }

    public enum RawTree {
        BigTree,
        SmallTree,
        Field,
        None
    }

    public enum ItemProd {
        Corps,
        Dairy,
        JuiceJamMaker,
        Kitchen,
        Bakery,
        CraftHouse,
        ChickenCoop,
        FishingSpotMountain,
        CowPasture,
        LunaMine,
        PigPen,
        FishingSpotLake,
        TropicalWood,
        SheepPasture,
        FishingSpotSea,
        Beebox,
        HomeIndustry,
        Merchant
    }

    public enum ItemLocation { 
        Home,
        Orchard,
        Forest
    }

    public enum ItemMerchant { 
        Margaret,
        Lucy,
        Bobby,
        Roger,
        Grace
    }

    public item (string name, int ID, string desc, int harvestx, int time, int stdpricex, int hightpricex, int stock, int Lvlunlockx, RawTree RawTree, ItemType type, ItemProd prod, string folderx, ItemLocation location, ItemMerchant merchant, int rate, int minspawnBuy, int maxspawnBuy, int minspawnSell, int maxspawnSell, int Exp) {
        itemName = name;
        itemID = ID;
        itemDesc = desc;
        harvest = harvestx;
        itemTime = time;
        stdprice = stdpricex;
        hightprice = hightpricex;
        itemStock = stock;
        Lvlunlock = Lvlunlockx;
        rawTree = RawTree;
        itemType = type;
        itemProd = prod;
        itemIcon = folderx;
        itemLocation = location;
        itemMerchant = merchant;
        spawnRate = rate;
        minqtySpawnBuy = minspawnBuy;
        maxqtySpawnBuy = maxspawnBuy;
        minqtySpawnSell = minspawnSell;
        maxqtySpawnSell = maxspawnSell;
        itemExp = Exp;
    }

    public item() {

    }
}

然后，我将创建一个列表项：

public List<item> items = new List<item> ();

第一：如何将物品保存到更有效的播放器中？

例如我在字典上有数据：

public Dictionary <string, Dictionary <string, int> > productSellMargaret;

第二：如何更有效地将productSellMargaret产品保存到Playerprefs中？

如何将它们都保存到playerprefs中，以便退出游戏并继续播放继续数据时可以继续调用数据？