使用会话或cookie来存储userId特定用户实例。通过存储用户ID，您可以在应用程序的任何页面上获得用户ID。

在login.aspx.cs



请执行以下操作/>


会话[userId] = YourAuthenticatedUserId;



在每个页面或母版页.cs文件中。请执行以下操作



如果（会话[userId] == null）

{

Response.Redirect （Login.aspx）;

}

else

{

//您的身份验证用户代码

}

您可以使用以下指南



< authorization>



< deny users =？>









但您可以参考以下网址了解更多详情



http://www.codeproject.com/Articles/ 13872 /表单的认证和授权，在-ASP-NET

Hello everyone,
I am working on the web application in which i have one login page and the other page to which user will be redirected on successful login.I want to prevent direct access to that another page for unauthenticated users.As we all know,to accomplish this,FORMS AUTHENTICATION is the best way.I have made following changes to web.config:

<authentication mode="Forms">
     <forms loginUrl="Login.aspx"/>
   </authentication>
   <authorization>
     <deny users="?"/>
   </authorization>

Now,My question is,how to determine weather,user is authenticated or not?I have done that when user types in the username and the password,on successful login,it will be redirected to the main page with username passed as query string:

Response.Redirect("Default.aspx?uname=" + uname + "");


i have gone through somany tutorials on google,but not able to figure out how to determine users identity.Please suggest me the ways to overcome this issue.

Regards

Use session or cookies to store userId for that specific user instance. Through storing user id you can get user id on any page of your application.
In login.aspx.cs

Do following

Session["userId"] = YourAuthenticatedUserId;

On every page or in master page .cs file. Do the following

If(Session["userId]== null)
{
Response.Redirect("Login.aspx");
}
else
{
// Your code for authenticated user
}

You can use the following guide lines

<authorization>

<deny users="?">




however you can refer following URL for more details

http://www.codeproject.com/Articles/13872/Form-authentication-and-authorization-in-ASP-NET