C# 后端WebApi实现跨域

之前写过以dll为宿主的WebApi实现，参照：

https://blog.youkuaiyun.com/glmushroom/article/details/107538919

现在遇到前端跨域问题。

在NuGet中引入

在配置中进行设置 ：

config.EnableCors();
config.EnableCors(new EnableCorsAttribute("*", "*", "*"));

        public static bool isHostStart = false;
        public static HttpSelfHostServer _hostServer = null;
        public static void CreateWebHost(string Ip, int Port)
        {
            if (_hostServer == null)
            {
                try
                {
                    string url = string.Format("http://{0}:{1}", Ip, Port);
                    var config = new HttpSelfHostConfiguration(url);

                    config.EnableCors();
                    config.EnableCors(new EnableCorsAttribute("*", "*", "*"));

                    config.Routes.MapHttpRoute(
                     name: "DefaultApi",
                    routeTemplate: "api/v1.0/{controller}/{action}/{id}",
                    defaults: new { id = RouteParameter.Optional });

                    config.MapHttpAttributeRoutes();

                    _hostServer = new HttpSelfHostServer(config);

                    _hostServer.OpenAsync().Wait();
                    foreach (var api in _hostServer.Configuration.Services.GetApiExplorer().ApiDescriptions)
                    {
                        //Logger.Info(api.ID);
                        //Logger.Info(api.RelativePath);
                    }
                    isHostStart = true;
                }
                catch (Exception ex)
                {

                }
            }
        }