ASP.net modalpopup

Question

我采取松散地基于对这篇文章的通知系统：

http://www.4guysfromrolla.com/articles/110409-1.aspx

其中一个变化，我需要做的是展现出modalpopup（使用用户登录后如果用户发布了要阅读的通知，则使用ModalPopupExtender。

由于用户在标准登录控件的LoggedIn事件后重定向，弹出窗口不显示。 我怎么能避免这种情况？

Protected Sub Login1_LoggedIn(ByVal sender As Object, ByVal e As System.EventArgs) Handles Login1.LoggedIn 
     'See if this user has unread announcements 
     Dim announcementAPI As AnnouncementBLL = New AnnouncementBLL 
     Dim UnreadAnnouncementCount As Integer= announcementAPI.GetUnreadAnnouncementCount(Login1.UserName) 
     If UnreadAnnouncementCount > 0 Then 
      UnreadAnnouncementMessage.Text = String.Format("You have {0} Announcement that you did not read yet.", UnreadAnnouncementCount) 
      'Show modal popup for announcement! 
      UnreadAnnouncementModalPopup.Show() 

      'add soothing so user don't get redirected. 

     End If 

    End Sub 
Protected Sub Read_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Read.Click 
     Response.Redirect(String.Format("~/Announcements.aspx?RedirectUrl={1}", _ 
           Server.UrlEncode(FormsAuthentication.GetRedirectUrl(Login1.UserName, False)))) 

    End Sub 

    Protected Sub Ignore_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Ignore.Click 
     Response.Redirect(FormsAuthentication.GetRedirectUrl(Login1.UserName, False)) 
    End Sub 

Answer 1

我假设您使用的是标准登录控件？如果您想要更多地控制重定向行为，您可以编写自己的登录控件并插入自己的重定向逻辑。

编写自己的登录控件非常简单，因为您可以很轻松地使用.NET授权方法。在捕获用户的用户名/密码后，您可以使用以下几行验证并设置用户的cookie：

If Membership.ValidateUser(username, password) Then 
    ' add your redirect logic here 
    FormsAuthentication.SetAuthCookie(username, rememberMe) 
End If