Access Session Variables in an ASP.NET Custom HttpHandler

If session state is required in your HTTP handler, you need to implement the IRequiresSessionState interface.

The IRequiresSessionState is a marker interface which is empty without any methods or elements in it and gives read/write access to Sessions. A Marker interface like this one just informs the runtime that a certain feature is to be enabled.

On the other hand, if you require only a read only access to Session, use the IReadOnlySessionState which is also a marker interface.

C#

public class MyHandler : IHttpHandler, IRequiresSessionState

{

    //  Use Session now

}

VB.NET

Public Class MyHandler

    Implements IHttpHandler, IRequiresSessionState

    '  Use Session now

End Class

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About The Author

Suprotim Agarwal, ASP.NET Architecture MVP works as an Architect Consultant and provides consultancy on how to design and develop Web applications.

Suprotim is also the founder and primary contributor to DevCurry, DotNetCurry and SQLServerCurry. He has also written an EBook 51 Recipes using jQuery with ASP.NET Controls.

Follow him on twitter @suprotimagarwal