How to test for empty string on session object

[lelaidd]

I have the following test:\[code\]if(Session["mykey"] != string.Empty){...}\[/code\]In VS.NET 2010's watch window, the value of Session["mykey"] is "". Yet I still go into the conditional. Do I need some other test?--- EDIT ---After the above runs, I do reset the object by assigning string.Empty.