确定ASP.NET MVC 3中的请求是否为PartialView或AJAX请求

I have to give access rigths to the users of a website. I am doing the filtering here:

我必须为网站用户提供访问权限。我在这里做过滤：

protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
}

The problem is that I cannot distinguish full View request such as 'Index' from PartialViewRequests or AJAX calls requests.

问题是我无法区分完整的View请求，例如'Index'与PartialViewRequests或AJAX调用请求。

Therefore the page 'Index' has access but the 'PartialViewGridViewForIndex' does not have access.

因此页面'Index'具有访问权限，但'PartialViewGridViewForIndex'没有访问权限。

The property ControllerContext.IsChildAction does not help either.

属性ControllerContext.IsChildAction也没有帮助。

3 个解决方案

#1

You could use the IsAjaxRequest extension method to determine if an AJAX request was used to invoke this controller action:

您可以使用IsAjaxRequest扩展方法来确定是否使用AJAX请求来调用此控制器操作：

protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
    if (filterContext.HttpContext.Request.IsAjaxRequest())
    {
        // the controller action was invoked with an AJAX request
    }
}

#2

You can extend HttpRequestExtensions in asp.net Core 2 as below

您可以在asp.net Core 2中扩展HttpRequestExtensions，如下所示

public static class HttpRequestExtensions
{
    private const string RequestedWithHeader = "X-Requested-With";
    private const string XmlHttpRequest = "XMLHttpRequest";

    public static bool IsAjaxRequest(this HttpRequest request)
    {
        if (request == null)
        {
            throw new ArgumentNullException("request");
        }

        if (request.Headers != null)
        {
            return request.Headers[RequestedWithHeader] == XmlHttpRequest;
        }

        return false;
    }
}

And use it as

并用它作为

 if (!Request.IsAjaxRequest())
 {
    //----
  }
  else
  {
      // -------
  }

#3

I would create an Authorization filter by extending the AuthorizeAttribute. I would then put my code in the OnAuthorize override. In the FilterContext object you can look at FilterContext.ActionDescriptor.MethodInfo.ReturnType.Name. For a partial view this will be PartialViewResult.

我将通过扩展AuthorizeAttribute来创建一个Authorization过滤器。然后我会将我的代码放在OnAuthorize覆盖中。在FilterContext对象中，您可以查看FilterContext.ActionDescriptor.MethodInfo.ReturnType.Name。对于局部视图，这将是PartialViewResult。

#1