1 　　<form id="UpPicture"   enctype="multipart/form-data" action="服务器路径地址" method="post">
 2         <table>
 3             <tr>
 4                 <td>
 5                     <input type="file" name="Picture"/>
 6                 </td>
 7             </tr>
 8
 9        <tr>
10                 <td>提交</td>
11                 <td>
12                     <input type="submit" value="提交" /></td>
13             </tr>
14         </table>
15     </form>

 1  　　　　 /// <summary>
 2         /// 图片上传方法，客户端通过表单的形式上传
 3         /// </summary>
 4         /// <returns></returns>
 5         [HttpPost]
 6         public PhotographUploadReturn PhotographUpload()
 7         {
 8             var msg = "";
 9             string _toServerPicturePath = "";//文件名
10             //接收表单传递过来的图片，需要限定上传的图片格式：".JPG", ".JPEG", ".GIF", ".PNG", ".BMP"
11             var file = HttpContext.Current.Request.Files["Picture"];
12
13             //检查文件是否被预览选中,判断方式：通过判断文件名是否为空或者空字符串
14             if (!string.IsNullOrWhiteSpace(file.FileName))
15             {
16                 //限定上传图片的格式类型
17                 string[] LimitPictureType = { ".JPG", ".JPEG", ".GIF", ".PNG", ".BMP" };
18                 //当图片上被选中时，拿到文件的扩展名
19                 string currentPictureExtension = Path.GetExtension(file.FileName).ToUpper();
20                 //此处对图片上传的类型进行限定操作
21                 if (LimitPictureType.Contains(currentPictureExtension))
22                 {
23                     //此处标记图片上传至服务器的唯一新名称
24                     string _newFileName = Guid.NewGuid().ToString();
25                     _toServerPicturePath = DateTime.Now.Year + "/" + DateTime.Now.Month + "/";
26                     string _dbPicturePath = "Certifications/" + _toServerPicturePath + _newFileName + currentPictureExtension;
27                     _toServerPicturePath = AppDomain.CurrentDomain.BaseDirectory + "Certifications/" + _toServerPicturePath;//最终生成的文件名：+_newFileName +currentPictureExtension
28
29                     //首先判断图片上传至服务的路径是否存在，不存在则创建并执行保存操作，存在则直接保存
30                     if (Directory.Exists(_toServerPicturePath))
31                     {
32                         //最终上传的文件路径全名
33                         _toServerPicturePath = _toServerPicturePath + _newFileName + currentPictureExtension;
34                     }
35                     else
36                     {//不存在此路径，则创建后执行保存操作
37                         Directory.CreateDirectory(_toServerPicturePath);
38                         _toServerPicturePath = _toServerPicturePath + _newFileName + currentPictureExtension;
39                     }
40                     //执行保存图片，并插入数据库操作
41                     file.SaveAs(HttpContext.Current.Server.MapPath("~/" + _dbPicturePath));
42                     ////执行数据库相关操作，没有异常则代码继续执行，否则跳出
43                     msg = "图片上传操作成功！";
44                 }
45                 else
46                 {
47                     msg = "图片上传操作失败，请选择扩展名为：.JPG, .JPEG, .GIF, .PNG, .BMP 等类型图片。";
48                 }
49             }
50             else
51             {
52                 msg = "图片上传操作失败，图片没有被选中！";
53             }
54
55             return new PhotographUploadReturn { ImageName = _toServerPicturePath, Message = msg };
56         }