Question

'DemoEntities1 db = new DemoEntities1（）;'
上的
错误

namespace HRMS.Controllers
{
    public class FileController : Controller
    {
        DemoEntities1 db = new DemoEntities1();
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Index(IEnumerable<HttpPostedFileBase> files, Tb_File objfile)
        {
            foreach (var file in files)
            {
                if (file != null && file.ContentLength > 0)
                {
                    var fileName = Path.GetFileName(file.FileName);
                    var filepath = Guid.NewGuid().ToString() + fileName;
                    var path = Path.Combine(Server.MapPath("~/uploads"), filepath);
                    file.SaveAs(path);
                    objfile.FileName = fileName;
                    objfile.Filepath = "~/uploads/" + filepath;
                    db.Tb_File.Add(objfile);
                    db.SaveChanges();
                }
            }
            return View();
        }

        //download
        public ActionResult Download()
        {
            var file = db.Tb_File.ToList();
            return View(file);
        }

        public FileResult DownloadFile(string id)
        {
            int fid = Convert.ToInt32(id);
            string filename = (from f in db.Tb_File
                               where f.Id == fid
                               select f.Filepath).First();
            return File(filename, System.Net.Mime.MediaTypeNames.Application.Octet, filename);
        }

    }
}

Answer 1

DemoEntities1是否在同一个项目中。可能你错过了使用声明。目前，您位于控制器命名空间中，您的实体可能位于不同的命名空间中。

在命名空间HRMS.Controllers上面添加以下行

using the namespaceforDemoentities1;

找不到命名空间“DemoEntities1”

1 个答案: