1. 前台 cshtml
- </pre><pre name="code" class="csharp">@model BLL.BLL.Product
-
- @{
- ViewBag.Title = "Add";
- }
-
- <h2>Add</h2>
-
- <form action="../Product/Add" method="post" enctype="multipart/form-data">
- <table>
- <tr>
- <td>@Html.Label("ProductName:")</td>
- <td>@Html.TextBoxFor(m=>m.ProductName)</td>
- </tr>
-
- <tr>
- <td>@Html.Label("ProductDesc:")</td>
- <td>@Html.TextBoxFor(m=>m.ProductDesc)</td>
- </tr>
-
- <tr>
- <td>@Html.Label("ProductPrice:")</td>
- <td>@Html.TextBoxFor(m=>m.ProductPrice)</td>
- </tr>
-
- <tr>
- <td>@Html.Label("ProductImage:")</td>
- <td><input type="file" name="ProductImage"/></td>
- </tr>
-
- <tr>
- <!--下拉列表框,数据由后台初始化-->
- <td>@Html.Label("ProductCategory:")</td>
- <td>@Html.DropDownListFor(m=>m.CId, @ViewBag.cList as IEnumerable<SelectListItem>)</td>
- </tr>
-
- <tr>
- <td><input type="submit" value="submit" /></td></tr>
-
- </table>
- </form>
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<SelectListItem> cList = new List<SelectListItem>();
- 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:
- <httpRuntime maxRequestLength="999999999" />
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