Web API表单数据收集

Question

我正在尝试将表单序列化值发布到控制器（WebAPI自宿主）。我无法理解为什么没有正确绑定NameValueCollection。使用jQuery的客户端：

// Form Submit Handler
$( '#form-parameters' ).submit(function (event) {

        event.preventDefault();

        var formData = $(this).serialize();
        // Post serialized form data
        postAssemblyParameters(formData);
});

// Post Form Data to controller test
function postAssemblyParameters(formData){
        $.ajax({
                url: http://localhost/api/test/1,
                type: 'POST',
                data: formData,
                dataType: 'application/x-www-form-urlencoded',
                success: function(x3d) {
                },
                error: function(xhr) {

                }
        });
}

使用Web API自主机的服务器端：

public void Post([FromUri] int id, [FromBody] NameValueCollection formData)
{
        Console.WriteLine(id); // OK

        // Collection is NULL
        foreach (var key in formData.AllKeys)
        {
                foreach (var val in formData.GetValues(key))
                {
                        Console.WriteLine(key + ": " + val);
                }
        }
}

非常感谢。

Answer 1

谢谢你，斯科特。你的回答正是我需要的。基于此，我编写了下面的小实用程序方法，当它从流中提取所有数据值（使用FormDataCollection）并将它们放入NamedValueCollection（您可以按任何顺序访问）时，它会派上用场。

/// <summary>
/// Copy the values contained in the given FormDataCollection into 
/// a NameValueCollection instance.
/// </summary>
/// <param name="formDataCollection">The FormDataCollection instance. (required, but can be empty)</param>
/// <returns>The NameValueCollection. Never returned null, but may be empty.</returns>
public static NameValueCollection Convert(FormDataCollection formDataCollection)
{
    Validate.IsNotNull("formDataCollection", formDataCollection);

    IEnumerator<KeyValuePair<string, string>> pairs = formDataCollection.GetEnumerator();

    NameValueCollection collection = new NameValueCollection();

    while (pairs.MoveNext())
    {
        KeyValuePair<string, string> pair = pairs.Current;

        collection.Add(pair.Key, pair.Value);
    }

    return collection
 }

Answer 2

或者您可以使用构建“ReadAsNameValueCollection”，如下所示：

NameValueCollection MyNameValueCollection = formData.ReadAsNameValueCollection();

Answer 3

尝试FormDataCollection，而不是NameValueCollection。

http://weblogs.asp.net/cibrax/archive/2012/08/10/binding-form-data-in-asp-net-web-api.aspx