Session state can only be used if EnableSessionState is set to true in the configuration file or Page directive. Also make sure to include System.Web.SessionSta in the//section of the application configuration

Source: Internet
Author: User

I called the SESSIONJ result directly in the constructor of the parent class to report the error.

I've been searching for a long time to change web.

The code is as follows:

 Public classBasePage:System.Web.UI.Page { PublicBasePage () { This.       IsLogin (); }          Public voidIsLogin () {if(session["DateTime"] ==NULL) Response.Redirect ("/webform1.aspx"); }   }  

Change the code to the following.

 Public classBasePage:System.Web.UI.Page {protected Override voidOnInit (EventArgs e) { This.       IsLogin (); }          Public voidIsLogin () {if(session["DateTime"] ==NULL) Response.Redirect ("/webform1.aspx"); }   }  

The

Session state can only be used if EnableSessionState is set to true in the configuration file or Page directive. Also make sure to include System.Web.SessionSta

in the//section of the application configuration.

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