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我正在 WPF 下开发一个 C# .Net Core 项目，并与 PlayFab 链接，更具体地说，与 CloudScript 修订版链接。以下代码是 WPF 中 C# 类中的一个函数，该函数在调用 CloudScript 函数后运行。CloudScript 函数购买物品并将其提供给玩家。当函数没有返回错误时，我的问题适用。

这是代码：

        /// <summary>
        /// PlayFab check query
        /// </summary>
        /// <param name="result"></param>
        private void GetCloudScriptPurchase(ExecuteCloudScriptResult result)
        {
            JsonObject jsonResult = (JsonObject)result.FunctionResult;

            try
            {
                // This is where I get responseContent
                jsonResult.TryGetValue("responseContent", out object responseContent);
                shopDataContext.PlFabInfo = (string)responseContent;

                // Here, this is what would suit me better, I avoid an API call just by modifying 
                // the variable with the return of the CloudScript function
                jsonResult.TryGetValue("messageValue", out object messageValue);
                this.getUserInvent = (PlayFabResult<GetUserInventoryResult>)messageValue;
                this.ClientVirtualCurrency(
                        getUserInvent.Result.VirtualCurrency["BC"]
                    );

                // Here I update the local variable by making another API call, 
                // which I want to avoid
                this.getUserInvent = PlayFabClientAPI.GetUserInventoryAsync(new GetUserInventoryRequest()).Result;
                this.ClientVirtualCurrency(
                        PlayFabClientAPI.GetUserInventoryAsync(
                            new GetUserInventoryRequest()).Result.Result.VirtualCurrency["BC"]
                    );
            }
            catch (Exception Exception)
            {
                throw Exception;
            }
        }

这个shopDataContext是一个特定于实际页面的 Binding，这里它只是显示 CloudScript 函数的返回。此ClientVirtualCurrency函数计算在客户端上无错误显示的玩家金额。它需要一个 int 参数。

CloudScript 的返回和代码的返回：

return { responseContent: messageReturn, messageValue: server.GetUserInventory({PlayFabId: currentPlayerId}) }

       "FunctionResult": {
            "responseContent": "The skin deuxiopack is now yours!",
            "messageValue": {
                "PlayFabId": "862C4ED0EE57D60F",
                "Inventory": [
                    {
                        "ItemId": "deuxiopack",
                        "ItemInstanceId": "63A13435128DA937",
                        "ItemClass": "Pack",
                        "PurchaseDate": "2021-06-15T15:10:54.87Z",
                        "CatalogVersion": "Skin",
                        "DisplayName": "DeuxioPack",
                        "UnitPrice": 0
                    },
                    {
                        "ItemId": "trexiopack",
                        "ItemInstanceId": "504C450155074940",
                        "ItemClass": "Pack",
                        "PurchaseDate": "2021-06-11T14:37:18.772Z",
                        "CatalogVersion": "Skin",
                        "DisplayName": "TrexioPack",
                        "UnitPrice": 0
                    },
                    {
                        "ItemId": "starterpack",
                        "ItemInstanceId": "C191AB8C4A6717C6",
                        "ItemClass": "Pack",
                        "PurchaseDate": "2021-06-11T14:29:31.955Z",
                        "Annotation": "Granted via Game Manager",
                        "CatalogVersion": "Skin",
                        "DisplayName": "StarterPack",
                        "UnitPrice": 0
                    }
                ],
                "VirtualCurrency": {
                    "BC": 200
                },
                "VirtualCurrencyRechargeTimes": {}
            }
        }

CloudScript 函数返回一个responseContent对象，该对象是要在客户端上显示的成功或错误消息（在我们的例子中是成功消息）的字符串。此函数还返回一个messageValue对象，它是一个PlayFab.Json.JsonObject。

当我尝试时，此错误显示在捕获中：System.InvalidCastException: Unable to cast object of type 'PlayFab.Json.JsonObject' to type 'PlayFab.PlayFabResult`。因此，我无法将PlayFab.Json.JsonObject类型更改为PlayFab.PlayFabResult，以便能够在没有新 API 调用的情况下更新我的本地变量getUserInvent 。

如果有人可以帮助我或给我提示，请提前致谢。

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