Generic extension method for a safe item value fetch from HttpSessionState.

velio — Fri, 09 Oct 2009 06:46:59 GMT

del.icio.us Tags: ASP.NET,C#

Hi there,

Here is an extension method for getting a value from the session in a safe manner.

        1: static public bool TryGet<T>(this HttpSessionState session, string key, out T value) {

       2:  

       3:     bool flag = false;

       4:     value = default(T);

       5:  

       6:     if (session != null) {

       7:         object objectValue = session[key];

       8:         if (flag = (objectValue != null && objectValue is T)) value = (T)objectValue;

       9:     }

      10:  

      11:     return flag;

      12: }

The usage is simple like:

       1: bool flag;

       2: if(this.Page.Session.TryGet<bool>("MyFlag", out flag)) {

       3:     // TODO value exists and can be used

       4: }

Regards

Velio's Blog : C#, Programming

Generic extension method for a safe item value fetch from HttpSessionState.