I have an MVC application which sets some session variables based on internal static IP addresses.

I have built an ApplicationController to override the OnActionExecuted sub in MVC for data that I need to use throughout my application.

However, the code below, which is just a snippet of my code but is edited for my post, only partially works. On initial page load, the session variables aren't saved, but after a page refresh they are. The issue I have is that these need to be saved on the initial page load.

```
If Session("Item1") = Nothing Then
                If IpAddressShort <> "" Then
                    Dim locInfo = cmsRepository.GetInfoBasedOnLocation(IpAddressShort).SingleOrDefault()

                    If locInfo IsNot Nothing Then
                        Session("Item1") = locInfo.Item1
                        Session("Item2") = locInfo.Item2
                        Session("Item3") = locInfo.Item3
                        Session("Item4") = locInfo.Item4

                        If locInfo.Item2= "1" Then
                            Session("Visibility") = 3
                            Session("TypeShort") = "XXXX"
                        ElseIf locInfo.Item2= "2" Then
                            Session("Visibility") = 4
                            Session("TypeShort") = "YYYY"
                        ElseIf locInfo.Item2= "9" Then
                            Session("Visibility") = 2
                            Session("TypeShort") = "ZZZZZ"
                        End If

                    End If
                End If
            End If

```

Theoretically, if I'm correct, if there is no `Session("Item1")` set/if `Session("Item1")` is empty, then the rest of the snippet should run and set those variables.

How come this isn't setting those variables on the first time the page load?

Thanks for any help in advance