.NET - ASP.NET

The FormsAuthentication.Signout() method is used to sign out from the forms authentication.

If you want a control to postback automatically when an event is raised, you need to set the AutoPostBack property of the control to True.

The ASP.NET 4.0 introduced a new property called ViewStateMode for the Control class. Now you can enable the view state to an individual control even if the view state for an ASP.NET page is disabled.

The App_Code folder is automatically present in the project. It stores the files, such as classes, typed data set, text files, and reports. If this folder is not available in the application, you can add this folder. One of the important features of the App_Code folder is that only one dll is created for the complete folder, irrespective of how many files it contains.