Question

我是ASP.NET MVC 5上的newbby，我需要修改Identity membership提供的用户表，为用户添加avatr。这样做有什么好处。谢谢

Answer 1

很简单，您需要在ApplicationUser类中添加字段：

public class ApplicationUser : IdentityUser
{
   public string Avatar { get; set; }
}

然后你可以编写一个扩展方法来访问用户的头像：

public static string GetAvatar(this System.Security.Principal.IIdentity user)
{
   // Get user's avatar
   //....
}

然后你可以这样使用：

<img class="img-circle" src="~/Content/Images/UserPhotos/@User.Identity.GetAvatar()" alt="profile">

用于添加照片的

更新：您需要在视图中添加文件输入标记：

@using (Html.BeginForm("ActionName", "ControllerName", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
  <div class="form-group">
    @Html.LabelFor(m => m.Avatar, new { @class = "col-md-2 control-label" })
    <div class="col-md-4">
    <input type="file" name="file" value="" />
         @Html.ValidationMessageFor(model => model.Avatar)
    </div>
  </div>
  // Other fields
}

行动方法：

[HttpPost]
public async Task<ActionResult> ActionName(RegisterViewModel model, HttpPostedFileBase file)
{
   if (ModelState.IsValid)
   {
        var fileName = UploadPhoto(file);
        var user = new ApplicationUser
        {
            Avatar = fileName,
            // Other fields
        };
    }
   // code....           
   return View();
}

上传照片方法：

public string UploadPhoto(HttpPostedFileBase file)
{
     if (file != null)
     {
                var fileName = Path.GetFileName(file.FileName);
                var rondom = Guid.NewGuid() + fileName;
                var path = Path.Combine(HttpContext.Current.Server.MapPath("~/Content/Images/UserPhotos"), rondom);
                var filePathToSave = "UserPhotos/" + fileName;
                if (!Directory.Exists(HttpContext.Current.Server.MapPath("~/Content/Images/UserPhotos")))
                {
                    Directory.CreateDirectory(HttpContext.Current.Server.MapPath("~/Content/Images/UserPhotos"));
                }
                file.SaveAs(path);

                return rondom;
       }
     return "nofile.png";
}

ASP.NET MVC 5为AspNetUser添加头像

1 个答案: