字典作为参数传递时会丢失值？ [英] Dictionary loses value when passed as a parameter?

问题描述

我正在使用MVC，在重定向到操作之前，我会填充一些值，在此期间，我的词典中的计数始终为0？

I am using MVC, I populate some values before redirecting to an action, During this my dictionary always has a count of 0?

我会在此之前检查计数通过，并且超过0，但通过另一侧时始终为0。

I check the count before it passes and its over 0 but always 0 when it comes through the other side.

我也传递了其他字符串值，但它们都通过了。

I pass other string values too but they all come through fine.

我的重定向至操作。

return RedirectToAction(
    "APNewQuote", 
    new { 
        OENumber = "", QuoteNumber = "", ClaimNumber = ClaimNumber,
        MotorBodyRepairer = "", VehicleRegistration = vRegistration,
        vehicleMakeId = "", vehicleModelId = "", vehicleRangeId = "",
        vehicleMakeModels = "", vehicleModelCode = "",
        year = vYear, OEParts = OEParts }
);

我的操作结果接收到值。

My Action result receiving the values.

public ActionResult APNewQuote(string OENumber, string QuoteNumber, string ClaimNumber,
    string MotorBodyRepairer, string VehicleRegistration, int? vehicleMakeId,
    int? vehicleModelId, int? vehicleRangeId, string vehicleMakeModels,
    string vehicleModelCode, int? year, Dictionary<string,string> OEParts )

有人可以告诉我如何避免这种情况。

Could someone please tell me how i can prevent this.

推荐答案

我认为字典没有序列化。如在此问题的答案中所述 如果您需要传递重定向后对操作有些复杂的对象，您可能要使用Session或TempData：

I think the dictionary doesn't get serialized. As explained in this question's answer If you need to pass in some-what complex objects to an action after a redirect, you probably want to use either a Session or TempData:

因此将字典保存到 TempData 或 Session 对象。

So save your dictionary into TempData or the Session object.

用法：

// save
TempData["myDictionary"] = OEParts;


// retrieve
var myDic = TempData["myDictionary"] as Dictionary<string,string>;

HttpContext.Session属性

ControllerBase.TempData属性

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