c.IncludeXmlComments(GetXmlCommentsPath(thisAssembly.GetName().Name));

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Http.Description;
using System.Web.Http.Filters;
using Swashbuckle.Swagger;

namespace OnlineAPI.Utility
{
    public class HttpHeaderFilter : IOperationFilter
    {
        public void Apply(Operation operation, SchemaRegistry schemaRegistry, ApiDescription apiDescription)
        {
            if (operation.parameters == null) operation.parameters = new List<Parameter>();
            var filterPipeline = apiDescription.ActionDescriptor.GetFilterPipeline();
            //判断是否添加权限过滤器
            var isAuthorized = filterPipeline.Select(filterInfo => filterInfo.Instance).Any(filter => filter is IAuthorizationFilter);
            //判断是否允许匿名方法
            var allowAnonymous = apiDescription.ActionDescriptor.GetCustomAttributes<AllowAnonymousAttribute>().Any();
            if (isAuthorized && !allowAnonymous)
            {
                operation.parameters.Add(new Parameter
                {
                    name = "access-key",
                    @in = "header",
                    description = "用户访问Key",
                    required = false,
                    type = "string"
                });
            }
        }
    }
}

c.OperationFilter<HttpHeaderFilter>();

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Web;
using System.Web.Http;
using System.Web.Http.Controllers;
using Newtonsoft.Json;

namespace OnlineAPI.Utility
{
    /// <summary>
    /// 
    /// </summary>
    public class AccessKeyAttribute : AuthorizeAttribute
    {
        /// <summary>
        /// 权限验证
        /// </summary>
        /// <param name="actionContext"></param>
        /// <returns></returns>
        protected override bool IsAuthorized(HttpActionContext actionContext)
        {
            var request = actionContext.Request;
            if (request.Headers.Contains("access-key"))
            {
                var accessKey = request.Headers.GetValues("access-key").SingleOrDefault();
                //TODO 验证Key
                return accessKey == "123456789";
            }
            return false;
        }

        /// <summary>
        ///     处理未授权的请求
        /// </summary>
        /// <param name="actionContext"></param>
        protected override void HandleUnauthorizedRequest(HttpActionContext actionContext)
        {
            var content = JsonConvert.SerializeObject(new {State = HttpStatusCode.Unauthorized});
            actionContext.Response = new HttpResponseMessage
            {
                Content = new StringContent(content, Encoding.UTF8, "application/json"),
                StatusCode = HttpStatusCode.Unauthorized
            };
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http.Description;
using Swashbuckle.Swagger;

namespace OnlineAPI.Utility
{
    /// <summary>
    /// 
    /// </summary>
    public class UploadFilter : IOperationFilter
    {

        /// <summary>
        ///     文件上传
        /// </summary>
        /// <param name="operation"></param>
        /// <param name="schemaRegistry"></param>
        /// <param name="apiDescription"></param>
        public void Apply(Operation operation, SchemaRegistry schemaRegistry, ApiDescription apiDescription)
        {
            if (!string.IsNullOrWhiteSpace(operation.summary) && operation.summary.Contains("upload"))
            {
                operation.consumes.Add("application/form-data");
                operation.parameters.Add(new Parameter
                {
                    name = "file",
                    @in = "formData",
                    required = true,
                    type = "file"
                });
            }
        }
    }
}

c.OperationFilter<UploadFilter>();

CQ dom = "<div>Hello world! <b>I am feeling bold!</b> What about <b>you?</b></div>";


CQ bold = dom["b"];               /// find all "b" nodes (在例子中有两个)
       
  > bold.ToList()
  > Count = 2
  > [0]: {<b>...</b>}
  > [1]: {<b>...</b>}

  > bold.First().RenderSelection()
  > "<b>I am feeling bold!</b>"

string boldText = bold.Text();        /// jQuery text 方法;

  > boldText
  > "I am feeling bold! you?"

bold.Remove();                        /// jQuery remove 方法
string html = dom.Render();           

  > html
  > "<div>Hello world!  What about </div>"