君仙小一时的图片上传
c#图片上传是一种很简单的技术接下来让我们一起来看看吧:
前台页面:
@{ ViewBag.Title = "Index"; } <h2>Index</h2> <script src="~/Scripts/jquery-3.4.1.js"></script> <script src="~/Scripts/jquery.unobtrusive-ajax.js"></script> <div class="form-group"> <label for="crowd_file" class="col-sm-2 control-label">上传文件</label> <div class="col-sm-10"> <input type="file" accept=".jpg" id="crowd_file"> </div> </div> <div class="form-group"> <div class="col-sm-10"> <input type="button" value="上传" class="submit" id="crowd_file"> </div> </div> <script> $('.submit').click(function () { var formData = new FormData(); formData.append("file", $('#crowd_file')[0].files[0]); $.ajax({ url: '/Home/Index', dataType: 'json', type: 'POST', async: false, data: formData, processData: false, // 使数据不做处理 contentType: false, // 不要设置Content-Type请求头 success: function (data) { console.log(data); if (data.status == 'ok') { alert('上传成功!'); } }, error: function (response) { console.log(response); } }); }) </script>
后台控制器:
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using WebApplication1.Models; using System.IO; namespace WebApplication1.Controllers { public class HomeController : Controller { [HttpGet] public ActionResult Index() { return View(); } [HttpPost] public string Index(HttpPostedFileBase file) { //判断文件是否存在 if (file != null) { //写一个文件保存的路径 string imgpath = Server.MapPath(@"\Img\"); //判断路径是否存在,不存在则创建 if (!Directory.Exists(imgpath)) { Directory.CreateDirectory(imgpath); } //给文件再起个名 string ImgName = DateTime.Now.ToString("yyyyMMddHHmmss")+"_"+file.FileName; //把文件保存到服务器上 file.SaveAs(imgpath + ImgName); //返回文件的位置 return @"\Img\" + ImgName; } return "null"; } } }
建表:
using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; using System.Linq; using System.Web; namespace WebApplication1.Models { public class UserInfo { public string Id { get; set; } public string UserName { get; set; } public string Address { get; set; } public HttpPostedFileBase ImgUrl { get; set; } } }
以上就是用vs实现图片上传的代码,希望对大家有帮助!