如何表示MVC核心控制器的操作方法在核心剃刀页2.0相同

Question

我想执行上传和从数据库。在MVC核心下载它的正常工作，但我无法MVC控制器马托转换成剃刀页面的处理方法。如何做到这一点。我会很高兴，如果有人helped.Following是我的应用程序的更多细节

MVC核心的控制器方法

[HttpPost]  
  public async Task<IActionResult> UploadFile(IFormFile file)  
  {  
      if (file == null || file.Length == 0)  
          return Content("file not selected");  
  
      var path = Path.Combine(  
                  Directory.GetCurrentDirectory(), "wwwroot",   
                  file.GetFilename());  
  
      using (var stream = new FileStream(path, FileMode.Create))  
      {  
          await file.CopyToAsync(stream);  
      }  
  
      return RedirectToAction("Files");  
  }  
  
  public async Task<IActionResult> Download(string filename)  
  {  
      if (filename == null)  
          return Content("filename not present");  
  
      var path = Path.Combine(  
                     Directory.GetCurrentDirectory(),  
                     "wwwroot", filename);  
  
      var memory = new MemoryStream();  
      using (var stream = new FileStream(path, FileMode.Open))  
      {  
          await stream.CopyToAsync(memory);  
      }  
      memory.Position = 0;  
      return File(memory, GetContentType(path), Path.GetFileName(path));  
  } 

How To Represent above methods in Razor Pages

Answer 1

尝试改变你的剃须刀本页按照以下步骤进行：

1. 添加File剃刀页中Pages
2. 其内容是

   public class FileModel : PageModel
   {
       public void OnGet()
       {
   
       }
       [BindProperty]
       public IFormFile FormFile { get; set; }
       [IgnoreAntiforgeryToken]
       public async Task<IActionResult> OnPostUploadFileAsync()
       {
   
           return RedirectToPage("Index");
       }
       public async Task<IActionResult> OnGetDownloadAsync(string filename)
       {
           if (filename == null)
               return Content("filename not present");
   
           var path = Path.Combine(
                       Directory.GetCurrentDirectory(),
                       "wwwroot", filename);
   
           var memory = new MemoryStream();
           using (var stream = new FileStream(path, FileMode.Open))
           {
               await stream.CopyToAsync(memory);
           }
           memory.Position = 0;
           return File(memory, "application/octet-stream", Path.GetFileName(path));
       }
   }

3. 其观点是

   @page
   @model TestRazor.Pages.FileModel
   @{
       ViewData["Title"] = "File";
   }
   
   <h2>File</h2>
   
   <div class="row">
       <div class="col-md-4">
           <form method="post" asp-page-handler="UploadFile" enctype="multipart/form-data">
               <div class="form-group">
                   <label asp-for="FormFile" class="control-label"></label>
                   <input asp-for="FormFile" type="file" class="form-control" style="height:auto" />
                   <span asp-validation-for="FormFile" class="text-danger"></span>
               </div>
               <input type="submit" value="Upload" class="btn btn-default" />
           </form>
       </div>
   </div>

4. 请给OnGetDownloadAsync是https://localhost:44332/file?handler=download&filename=test.txt
5. 对于上传加载文件，转向https://localhost:44332/file，然后点击上传按钮来上传文件

有关剃刀页的详细信息，请参阅Upload files to a Razor Page in ASP.NET Core