如何能在的FormCollection ASP.NET MVC枚举？ [英] How can a formcollection be enumerated in ASP.NET MVC?

问题描述

我如何能够通过所有的键/值枚举
一个的FormCollection（system.web.mvc）在 ASP.NET MVC ？

How can I enumerate through all the key/values of a FormCollection (system.web.mvc) in ASP.NET MVC?

推荐答案

下面三种方法专门用的FormCollection对象做到这一点。

Here are 3 ways to do it specifically with a FormCollection object.

public ActionResult SomeActionMethod(FormCollection formCollection)
{
  foreach (var key in formCollection.AllKeys)
  {
    var value = formCollection[key];
  }

  foreach (var key in formCollection.Keys)
  {
    var value = formCollection[key.ToString()];
  }

  // Using the ValueProvider
  var valueProvider = formCollection.ToValueProvider();
  foreach (var key in valueProvider.Keys)
  {
    var value = valueProvider[key];
  }
}

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