将 POST 中的 Dictionary<string,string> 传递给 GET 方法（作为 url 参数）ASP.NET MVC

Question

我有问题。我想通过 RouteValueDictionary 通过 RedirectToAction 传递字典。有没有可能做到这一点？

我有一个POST方法：

[HttpPost]
public ActionResult Search(MyViewModel _myViewModel)
{
    IDictionary<string, string> parameters = new Dictionary<string, string>();

    foreach (var item in _myViewModel)
    {
        parameters.Add(item.ValueId, item.ValueName);   
    }

    return RedirectToAction("Search", new RouteValueDictionary(parameters));
}

我想要一个这样的 url:

http://localhost:26755/Searcher/Search?id1=value1&id2=value2&id3=value3

GET 方法应该是什么样子？

[HttpGet]
public ActionResult Search( **what's here?** )
{
    (...)
    return View(myViewModel);
}

Answer 1

首先，我们需要修复执行重定向的 Search 操作。如果您想在重定向时获得所需的查询字符串参数，则应使用 IDictionary<string, object> 而不是 IDictionary<string, string>：

[HttpPost]
public ActionResult Search(MyViewModel _myViewModel)
{
    IDictionary<string, object> parameters = new Dictionary<string, object>();

    foreach (var item in _myViewModel)
    {
        parameters.Add(item.ValueId, item.ValueName);   
    }

    return RedirectToAction("Search", new RouteValueDictionary(parameters));
}

并且在目标控制器操作中完成此操作后，您可以在请求中使用 QueryString 字典：

[HttpGet]
public ActionResult Search()
{
    // this.Request.QueryString is the dictionary you could use to access the
    // different keys and values being passed
    // For example:
    string value1 = this.Request.QueryString["id1"];

    ...

    // or you could loop through them depending on what exactly you are trying to achieve:
    foreach (string key in this.Request.QueryString.Keys)
    {
        string value = this.Request.QueryString[key];
        // do something with the value here
    }

    ...
}

将 POST 中的 Dictionary<string,string> 传递给 GET 方法（作为 url 参数）ASP.NET MVC

Pass Dictionary<string,string> from POST to GET method (as url parameters) ASP.NET MVC

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