System.Web.HttpRequestBase不包含'CreateResponse'的定义

Question

我在这个方法上遇到这个错误:

        [HttpGet]            
        public HttpResponseMessage Search([ModelBinder(typeof(ApiDataTablesModelBinder))] IDataTablesRequest requestModel)
        {
            var sortedColumn = requestModel.Columns.GetSortedColumns().SingleOrDefault();

            bool isDesc = false;
            string sortField = "ID";

            // get all projects and order them
            var projects = lkp_surveyRepo.GetAll();//.OrderBy(sortField, isDesc).ToList();

            // filtered projects
            var filteredResults = projects;

            filteredResults = projects.Where(x => x.code == selectedDistrictID);

            var pagedResults = filteredResults.Skip(requestModel.Start).Take(requestModel.Length);
            var result = Request.CreateResponse(HttpStatusCode.OK, new DataTablesResponse(requestModel.Draw, pagedResults, filteredResults.Count(), projects.Count()));

            return result;
        }

我的控制器正在实现Controller:

public class HomeController : Controller
    {

我发现了这个问题,但答案对我没有帮助:

asp.net Web API中的CreateResponse方法

完整的错误是:

错误13"System.Web.HttpRequestBase"不包含关于"CreateResponse"的定义和最佳的扩展方法过载"System.Net.Http.HttpRequestMessageExtensions.CreateResponse(System.Net.Http.HttpRequestMessage,System.Net.HttpStatusCode,T )'有一些无效的论点

你看到我做错了吗？也许这个CreateResponse方法里面有什么问题...谢谢

Answer 1

我有一种感觉,你继承了错误的基本控制器类型.如果您使用的是WebAPI,则应继承而ApiController不是继承Controller.

在ApiController,Request是System.Net.Http.HttpRequestMessage.在Controller,Request是System.Web.HttpRequestBase.所以扩展方法很接近,但是不正确的类型会给你签名方法不匹配.