c# - FromUri 似乎无法使用 Web API

Question

我正在尝试实现一个搜索过滤器以在我的一个 Controller 中获取对象。我有以下代码:

public class SearchFilter
{
    public DateTime? BusinessDate;
    public DateTime? BusinessDateFrom;
    public DateTime? BusinessDateTo;
    public bool? Status;
}

这是我的 Controller :

    public SearchFilter get([FromUri] SearchFilter SearchFilter)
    {
        var Results = db.MyTable.Where(t => t.Published == true);
        if (SearchFilter.BusinessDate != null)
        {
            Results = Results.Where(t => t.BusinessDate == SearchFilter.BusinessDate);
        }
        else
        {
            if (SearchFilter.BusinessDateFrom != null && SearchFilter.BusinessDateTo != null)
            {
                Results = Results.Where(t => t.BusinessDate >= SearchFilter.BusinessDateFrom && t.BusinessDate <= SearchFilter.BusinessDateTo);
            }
        }
        if (SearchFilter.Status != null)
        {
            Results = Results.Where(t => t.Approved == SearchFilter.Status);
        }

        return SearchFilter;
    }

我现在返回 SearchFilter 只是为了看看它是否工作，因为过滤没有工作。

原因如下:

请求:http://localhost:11513/api/MyController/?BusinessDateFrom=2015-09-10&BusinessDateTo=2015-09-12&BusinessDate=09/09/2015&Status=true结果:

{
  "BusinessDate": null,
  "BusinessDateFrom": null,
  "BusinessDateTo": null,
  "Status": null
}

任何人都可以解释我做错了什么，因为根据这个链接，它应该非常简单:

http://www.asp.net/web-api/overview/formats-and-model-binding/parameter-binding-in-aspnet-web-api

Answer 1

我意识到问题出在哪里。

问题出在 SearchFilter 类中，它缺少每个属性的 get 和 set。

public class SearchFilter
{
    public DateTime? BusinessDate { get; set; }
    public DateTime? BusinessDateFrom { get; set; }
    public DateTime? BusinessDateTo { get; set; }
    public bool? Status { get; set; }
}

这使它像魅力一样发挥作用。