如何使用MVC將ID傳遞給圖像文件名？

Question

我要保存使用session ID值，然後在上傳文件夾我想圖像

Answer 1

傳似 3.jpeg or png

[HttpPost] 
     public ActionResult AddImage(HttpPostedFileBase postedFile) 
     { 
      int compId = Convert.ToInt32(Session["compID"]); 
      if (postedFile != null) 
      { 
       string path = Server.MapPath("~/Uploads/"); 
       if (!Directory.Exists(path)) 
       { 
        Directory.CreateDirectory(path); 
       } 

       postedFile.SaveAs(path + Path.GetFileName(postedFile.FileName)); 
       ViewBag.Message = "File uploaded successfully."; 
      } 

      return RedirectToAction("AddCompany"); 
     } 

的ID值，下面我附上我的圖片文件

保存圖片時，您需要將compId和文件擴展名組合如下：

var filename = compId.ToString() + Path.GetExtension(postedFile.FileName); 

所以，你的代碼應該是這個樣子：

[HttpPost] 
    public ActionResult AddImage(HttpPostedFileBase postedFile) 
    { 
     int compId = Convert.ToInt32(Session["compID"]); 
     if (postedFile != null) 
     { 
      string path = Server.MapPath("~/Uploads/"); 
      if (!Directory.Exists(path)) 
      { 
       Directory.CreateDirectory(path); 
      } 

      var filename = compId.ToString() + Path.GetExtension(postedFile.FileName); 
      postedFile.SaveAs(path + filename); 
      ViewBag.Message = "File uploaded successfully."; 
     } 

     return RedirectToAction("AddCompany"); 
    }