title: How to define a global variable in ASP.net web app
body: <p>I have face a requirement, </p>
  
  <p>I want client access a data center but without use database , so I want my web app can retain a global or Application session variable, that contains the data,  every client can access the same data... I am try to declare in golabl, but seem it only can store String but others ...</p>
  
  <p>how to solve this problem ? </p>
  
  <p>thanks.</p>