这是在Control里使用的代码，是在后台管理需要上传图片时使用的，不过我在这犯了一个错误， Request.Files[inputName];inputName名字中的大小写
<input type="file" name="image">应该与model里的字段的名字一致
if (Request.RequestType == "POST")
            {
                foreach (string inputName in Request.Files.AllKeys)
                {
                    HttpPostedFileBase file = Request.Files[inputName];
                    //存入文件
                    if (file.ContentLength > 0)
                    {
                        PropertyInfo pro = model.GetType().GetProperty(inputName);
                        string proValue = (string)pro.GetValue(model, null);
                        if (!string.IsNullOrWhiteSpace(proValue))
                        {
                            Common.FileUpload.DeleteFile(proValue);

                        }
                        string fileName = Common.FileUpload.UploadFile(file);
                        pro.SetValue(model, fileName, null);
                    }
                }
}

    public static string UploadFile(HttpPostedFileBase file)
        {

            // Check if we have a file

            if (null == file) return "";

            // Make sure the file has content

            if (!(file.ContentLength > 0)) return "";

            string fileName = file.FileName;

            string fileExt = Path.GetExtension(file.FileName);

            // Make sure we were able to determine a proper

            // extension

            if (null == fileExt) return "";
            char DirSeparator = ‘/‘;
            string FilesPath = string.Format("{0}team{0}{1}{0}{2}{3}{0}", DirSeparator, DateTime.Now.Year, DateTime.Now.Month.ToString().PadLeft(2, ‘0‘), DateTime.Now.Day.ToString().PadLeft(2, ‘0‘));
            string PhysicalPath = HttpContext.Current.Server.MapPath(FilesPath);
            // Check if the directory we are saving to exists

            if (!Directory.Exists(PhysicalPath))
            {

                // If it doesn‘t exist, create the directory

                Directory.CreateDirectory(PhysicalPath);

            }

            // Set our full path for saving

            string path = PhysicalPath + fileName;

            // Save our file

            file.SaveAs(Path.GetFullPath(path));

            // Return the filename


            return FilesPath + fileName;

        }

        public static void DeleteFile(string fileName)
        {
            if (!string.IsNullOrWhiteSpace(fileName))
            {
                // Don‘t do anything if there is no name

                if (fileName.Length == 0) return;

                // Set our full path for deleting

                string path = HttpContext.Current.Server.MapPath(fileName);

                // Check if our file exists

                if (File.Exists(Path.GetFullPath(path)))
                {

                    // Delete our file

                    File.Delete(Path.GetFullPath(path));

                }
            }
        }

mvc3 上传图片,布布扣,bubuko.com

mvc3 上传图片