title: How can I use Session variable in an HttpHandler
body: <p>Goal: I have a thumbnail as a byte array in memory. Once a user uploads their image, I want to display it in an httphandler before writing it to the database. I have used this code to successfully read it and display from a database. But now I want to display it from the session:</p>
  
  <pre><code>Public Sub ProcessRequest(ByVal context As HttpContext) _
      Implements IHttpHandler.ProcessRequest
  
      Dim oPhotoMgt As New PhotoMgt
      Dim intPhotoID As Int32 = context.Request.QueryString("id") 
      Dim oPhoto As New Photo
      oPhoto = oPhotoMgt.GetPhotoByID(intPhotoID)   
  
      context.Response.ContentType = "image/jpeg" 
      context.Response.BinaryWrite(oPhoto.Bytes.ToArray())
  End Sub
  </code></pre>