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在asp.net mvc 页面里上传大文件到服务器端，需要如下步骤：
1. 在Control类里添加get 和 post 方法
1 // get method 2 public ActionResult Upload() 3 { 4 return View(); 5 } 6 7 // This action handles the form POST and the upload 8 [HttpPost] 9 public ActionResult Upload(HttpPostedFileBase file) 10 { 11 // Verify that the user selected a file 12 if (file != null && file.ContentLength > 0) 13 { 14 // extract only the fielname 15 var fileName = Path.GetFileName(file.FileName); 16 // store the file inside ~/App_Data/uploads folder 17 var path = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName); 18 file.SaveAs(path); 19 } 20 // redirect back to the index action to show the form once again 21 return RedirectToAction("Upload"); 22 }
2. 创建view页面，并且添加如下代码：
@using (Html.BeginForm("Upload", "Home", FormMethod.Post, new { enctype = "multipart/form-data" })) { <input type="file" name="file" /> <input type="submit" value="OK" /> }
3. 在Web.config里做如下添加和修改：
在<system.web>里添加
<httpRuntime targetFramework="4.5" maxRequestLength="1048576" executionTimeout="3600"/>
并且在<system.webServer>里添加
<security> <requestFiltering> <requestLimits maxAllowedContentLength="1073741824" /> </requestFiltering> </security>
大功告成！
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原文地址：http://www.cnblogs.com/beiyeqingteng/p/4220222.html
