1. 前台 cshtml

@model BLL.BLL.Product    @{      ViewBag.Title = "Add";  }    
Add
    
       
  
        
           
          
             
@Html.Label("ProductName:")
             
@Html.TextBoxFor(m=>m.ProductName)
            
              
             
@Html.Label("ProductDesc:")
             
@Html.TextBoxFor(m=>m.ProductDesc)
            
              
             
@Html.Label("ProductPrice:")
             
@Html.TextBoxFor(m=>m.ProductPrice)
            
              
             
@Html.Label("ProductImage:")
             
            
              
                          
@Html.Label("ProductCategory:")
             
@Html.DropDownListFor(m=>m.CId, @ViewBag.cList as IEnumerable
            
             )
            
            
              
             
          
             
        
  
       

 

 2. 后台Controller

public ActionResult Add() {          ShoppingDataContext dc = new ShoppingDataContext();        //初始化下拉列表框的数据      var linq = from c in dc.ProductCategories select new { c.CategoryId,c.CategoryName};      List
      
        cList = new List
       
        ();      foreach(var category in linq){          SelectListItem item = new SelectListItem() { Text=category.CategoryName, Value=category.CategoryId};          cList.Add(item);              }      ViewBag.cList = cList;      return View();  }      [HttpPost]  public ActionResult Add(Product p)  {      Stream uploadStream = null;      FileStream fs = null;      try      {          //文件上传，一次上传1M的数据，防止出现大文件无法上传          HttpPostedFileBase postFileBase = Request.Files["ProductImage"];           uploadStream = postFileBase.InputStream;          int bufferLen = 1024;          byte[] buffer = new byte[bufferLen];          int contentLen = 0;                    string fileName = Path.GetFileName(postFileBase.FileName);          string baseUrl = Server.MapPath("/");          string uploadPath = baseUrl + @"Images\Upload\Product\";           fs = new FileStream(uploadPath + fileName, FileMode.Create, FileAccess.ReadWrite);            while ((contentLen = uploadStream.Read(buffer, 0, bufferLen)) != 0)          {              fs.Write(buffer, 0, bufferLen);              fs.Flush();          }              //保存页面数据，上传的文件只保存路径          string productImage = "/Images/Upload/Product/" + fileName;          p.ProductImage = productImage;          p.ProductId = Guid.NewGuid().ToString();          p.CreationDate = DateTime.Now;            ShoppingDataContext dc = new ShoppingDataContext();          dc.Products.InsertOnSubmit(p);          dc.SubmitChanges();      }      catch (Exception ex)      {          ex.StackTrace.ToString();      }      finally {       if(null !=fs){          fs.Close();      }      if (null != uploadStream)      {          uploadStream.Close();      }      }        return RedirectToAction("../Category/ListProducts", new { cId=p.CId});  }
       
      

 

 3. 修改web.config 中对文件上传大小的限制

在 <system.web></system.web> 直接增加如下: