小编use*_*ser的帖子

在选择屏幕上,用户需要插入表名,我需要从该表中获取前3个字段并将其显示在输出的ALV中.我从阅读教程中理解的是,我需要调用方法cl_alv_table_create=>create_dynamic_table,但我不知道如何创建fieldcatalog.

DATA: t_newtable   TYPE REF TO data,
      t_fldcat     TYPE lvc_t_fcat,

CALL METHOD cl_alv_table_create=>create_dynamic_table
  EXPORTING
    it_fieldcatalog = t_fldcat
  IMPORTING
    ep_table        = t_newtable.

我正在尝试本教程 http://httpjunkie.com/2013/311/adding-mvc-5-identity-to-an-existing-project/ 但显示错误错误5名称'ConfigureAuth'不存在在当前上下文中,
这是我的startup.cs类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using Microsoft.Owin;
using Owin;

[assembly: OwinStartupAttribute(typeof(TicketSystem.Startup))]
namespace TicketSystem
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }



      }
    }

这是Startup.Auth.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.Web.Mvc;

using Microsoft.AspNet.Identity;
using Microsoft.Owin;
using Microsoft.Owin.Security.Cookies;
using Owin;
namespace TicketSystem.App_Start
{
    public partial class Startup
    {

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Enable the …

我只需要为每个订单获取一条记录，而且如果有广告，我需要连接到记录。但是当我使用时，Concat我收到了这个错误。

无法将类型隐式转换System.Collections.Generic.IEnumerable<x>为System.Collections.Generic.List<x>. 存在显式转换（您是否缺少演员表？）

DateTime now = DateTime.Now;
var pom = (from moduleNews in db.CMS_News_NewsInWebModule
           join module in db.CMS_News_WebModule on moduleNews.moduleKey equals module.moduleKey
           join newsEdnm in db.CMS_News_NewsToEditionNumber on moduleNews.newsGUID equals newsEdnm.newsGUID
           where module.moduleKey == id && newsEdnm.dateToBePublished < now && newsEdnm.CMS_News_Edition_Number.editionID == 2
           //orderby newsEdnm.dateToBePublished descending, moduleNews.order
           select
           new NewsModules
           {
               order = moduleNews.order,
               id = moduleNews.newsInWebModuleId,
               moduleKey = module.moduleKey,
               klientName = module.klientName,
               maxNews = module.maxNews,
               newsGUID = moduleNews.newsGUID,
               title = moduleNews.CMS_News_News.title,
               isAdvertise = moduleNews.isAdvertise, …